Rambus (RMBS) 10-K24 Feb 232022 FY Annual reportFinancial data

Company Profile

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
Cover Page - USD ($) $ in Billions	Dec. 31, 2022	Jan. 31, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	000-22339
Entity Registrant Name	RAMBUS INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-3112828
Entity Address, Address Line One	4453 North First Street
Entity Address, Address Line Two	Suite 100
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95134
City Area Code	408
Local Phone Number	462-8000
Title of 12(b) Security	Common Stock, $.001 Par Value
Trading Symbol	RMBS
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1.7
Entity Common Stock, Shares Outstanding		107,851,163
Documents Incorporated by Reference	Certain information is incorporated into Part III of this report by reference to the Proxy Statement for the Registrant’s annual meeting of stockholders to be held on or about April 27, 2023 to be filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Form 10-K.
Entity Central Index Key	0000917273
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Auditor Firm ID	238

Audit Information

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2022
Auditor Information [Abstract]
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	San Jose, California
Auditor Firm ID	238

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 125,334	$ 107,891
Marketable securities	187,892	377,718
Accounts receivable	55,368	44,065
Unbilled receivables	125,698	135,608
Inventories	20,900	8,482
Prepaids and other current assets	12,022	10,600
Total current assets	527,214	684,364
Intangible assets, net	50,880	58,420
Goodwill	292,040	278,810
Property, plant and equipment, net	86,255	56,035
Operating lease right-of-use assets	24,143	23,712
Deferred tax assets	3,031	4,047
Unbilled receivables	25,222	123,018
Other assets	3,809	4,240
Total assets	1,012,594	1,232,646
Current liabilities:
Accounts payable	24,815	11,279
Accrued salaries and benefits	20,502	20,945
Convertible notes	10,378	163,687
Deferred revenue	23,861	24,755
Income taxes payable	18,137	20,607
Operating lease liabilities	5,024	5,992
Other current liabilities	23,992	20,002
Total current liabilities	126,709	267,267
Long-term operating lease liabilities	29,079	29,099
Long-term income taxes payable	5,892	21,424
Deferred tax liabilities	24,964	23,985
Other long-term liabilities	46,653	28,475
Total liabilities	233,297	370,250
Commitments and contingencies (Notes 10, 13 and 19)
Stockholders’ equity:
Convertible preferred stock, $.001 par value: Authorized: 5,000,000 shares; Issued and outstanding: no shares at December 31, 2022 and December 31, 2021	0	0
Common Stock, $.001 par value: Authorized: 500,000,000 shares; Issued and outstanding: 107,610,356 shares at December 31, 2022 and 109,292,235 shares at December 31, 2021	108	109
Additional paid in capital	1,297,408	1,298,966
Accumulated deficit	(513,256)	(435,227)
Accumulated other comprehensive loss	(4,963)	(1,452)
Total stockholders’ equity	779,297	862,396
Total liabilities and stockholders’ equity	$ 1,012,594	$ 1,232,646

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2022	Dec. 31, 2021
Stockholders’ equity:
Convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock, authorized shares	5,000,000	5,000,000
Convertible preferred stock, issued shares	0	0
Convertible preferred stock, outstanding shares	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized shares	500,000,000	500,000,000
Common stock, issued shares	107,610,356	109,292,235
Common stock, outstanding shares	107,610,356	109,292,235

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue
Revenue	$ 454,793	$ 328,304	$ 246,322
Cost of revenue
Cost of product revenue	88,976	49,397	37,749
Cost of contract and other revenue	4,668	4,756	5,647
Amortization of acquired intangible assets	13,935	16,241	17,352
Cost of revenue	107,579	70,394	60,748
Gross profit	347,214	257,910	185,574
Operating expenses
Research and development	158,769	135,678	139,837
Sales, general and administrative	106,718	91,057	86,441
Amortization of acquired intangible assets	1,674	1,226	1,061
Restructuring and other charges	0	368	4,089
Change in fair value of earn-out liability	3,111	5,300	(1,800)
Total operating expenses	270,272	233,629	229,628
Operating income (loss)	76,942	24,281	(44,054)
Interest income and other income (expense), net	7,771	9,711	17,855
Gain on sale of equity security	3,547	0	0
Loss on extinguishment of debt	(83,626)	0	0
Loss on fair value adjustment of derivatives, net	(10,585)	0	0
Interest expense	(1,874)	(10,706)	(10,340)
Interest and other income (expense), net	(84,767)	(995)	7,515
Income (loss) before income taxes	(7,825)	23,286	(36,539)
Provision for income taxes	6,485	4,952	3,932
Net income (loss)	$ (14,310)	$ 18,334	$ (40,471)
Net income (loss) per share:
Basic net income (loss) per share	$ (0.13)	$ 0.17	$ (0.36)
Diluted net income (loss) per share	$ (0.13)	$ 0.16	$ (0.36)
Weighted-average shares used in per share calculations:
Basic (in shares)	109,472	110,538	113,254
Diluted (in shares)	109,472	114,865	113,254
Product revenue
Revenue
Revenue	$ 227,068	$ 143,935	$ 113,996
Royalties
Revenue
Revenue	139,816	136,706	84,560
Contract and other revenue
Revenue
Revenue	$ 87,909	$ 47,663	$ 47,766

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (14,310)	$ 18,334	$ (40,471)
Other comprehensive income (loss):
Foreign currency translation adjustment	(958)	(366)	24
Unrealized loss on marketable securities, net of tax	(2,553)	(1,005)	(13)
Total comprehensive income (loss)	$ (17,821)	$ 16,963	$ (40,460)

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative effect, period of adoption, adjustment	Common stock	Additional paid-in capital	Additional paid-in capital Cumulative effect, period of adoption, adjustment	Accumulated deficit	Accumulated deficit Cumulative effect, period of adoption, adjustment	Accumulated other comprehensive gain (loss)
Balance (in shares) at Dec. 31, 2019			112,131
Balance at Dec. 31, 2019	$ 975,373		$ 112	$ 1,261,142		$ (285,789)		$ (92)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(40,471)					(40,471)
Foreign currency translation adjustment	24							24
Unrealized loss on marketable securities, net of tax	(13)							(13)
Issuance of common stock upon exercise of options, equity stock and stock units, and employee stock purchase plan (in shares)			2,183
Issuance of common stock upon exercise of options, equity stock and employee stock purchase plan	2,084		$ 3	2,081
Repurchase and retirement of common stock under repurchase plan, shares			(2,616)
Repurchase and retirement of common stock under repurchase plan, value	(50,069)		$ (3)	(18,575)		(31,491)
Stock-based compensation	25,778			25,778
Balance (in shares) at Dec. 31, 2020			111,698
Balance at Dec. 31, 2020	912,706		$ 112	1,270,426		(357,751)		(81)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	18,334					18,334
Foreign currency translation adjustment	(366)							(366)
Unrealized loss on marketable securities, net of tax	(1,005)							(1,005)
Issuance of common stock upon exercise of options, equity stock and stock units, and employee stock purchase plan (in shares)			1,745
Issuance of common stock upon exercise of options, equity stock and employee stock purchase plan	(1,656)		$ 1	(1,657)
Stock Issued During Period, Shares, Acquisitions			300
Stock Issued During Period, Value, Acquisitions	6,978			6,978
Repurchase and retirement of common stock under repurchase plan, shares			(4,451)
Repurchase and retirement of common stock under repurchase plan, value	(100,081)		$ (4)	(4,267)		(95,810)
Stock-based compensation	27,486			27,486
Balance (in shares) at Dec. 31, 2021			109,292
Balance at Dec. 31, 2021	862,396		$ 109	1,298,966		(435,227)		(1,452)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(14,310)					(14,310)
Foreign currency translation adjustment	(958)							(958)
Unrealized loss on marketable securities, net of tax	(2,553)							(2,553)
Issuance of common stock upon exercise of options, equity stock and stock units, and employee stock purchase plan (in shares)			1,513
Issuance of common stock upon exercise of options, equity stock and employee stock purchase plan	(12,277)		$ 2	(12,279)
Repurchase and retirement of common stock under repurchase plan, shares			(3,195)
Repurchase and retirement of common stock under repurchase plan, value	(100,421)		$ (3)	(10,278)		(90,140)
Stock-based compensation	35,552			35,552
Adjustments to Additional Paid in Capital, Retirement of Convertible Senior Note Hedges	78,415			78,415
Adjustments to Additional Paid in Capital, Retirement of Warrants	(58,423)			(58,423)
Balance (in shares) at Dec. 31, 2022			107,610
Balance at Dec. 31, 2022	$ 779,297		$ 108	$ 1,297,408		$ (513,256)		$ (4,963)
Balance (Accounting Standards Update 2020-06) at Dec. 31, 2022		$ (8,124)			$ (34,545)		$ 26,421

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ (14,310)	$ 18,334	$ (40,471)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Stock-based compensation	35,552	27,486	25,778
Depreciation	31,517	26,810	29,773
Amortization of intangible assets	15,610	17,467	18,413
Non-cash interest expense and amortization of convertible debt issuance costs	207	7,656	7,243
Loss on extinguishment of debt	83,626	0	0
Loss on fair value adjustment of derivatives, net	10,585	0	0
Deferred income taxes	689	1,522	624
Gain on sale of equity security	(3,547)	0	0
Loss on equity investment	1,276	1,071	747
Realized loss from sale of marketable securities	1,138	0	0
Change in fair value of earn-out liability	3,111	5,300	(1,800)
Gain on disposal of property, plant and equipment	(1)	(82)	(77)
Change in operating assets and liabilities, net of effects of acquisition:
Accounts receivable	(9,274)	(13,521)	16,136
Unbilled receivables	107,945	118,452	156,202
Prepaid expenses and other assets	(707)	6,663	2,057
Inventories	(12,702)	6,109	(4,380)
Accounts payable	11,975	2,195	(2,176)
Accrued salaries and benefits and other liabilities	(4,745)	(1,642)	3,353
Income taxes payable	(19,279)	(25,309)	(17,852)
Deferred revenue	(1,354)	15,496	(1,486)
Operating lease liabilities	(6,919)	(4,790)	(6,625)
Net cash provided by operating activities	230,393	209,217	185,459
Cash flows from investing activities:
Purchases of property, plant and equipment	(17,478)	(13,792)	(29,728)
Acquisition of intangible assets	(3,000)	0	0
Purchases of marketable securities	(150,949)	(567,947)	(909,852)
Maturities of marketable securities	59,642	336,154	817,834
Proceeds from sale of marketable securities	276,687	227,045	25,304
Settlement of working capital adjustment from disposal of business	0	0	(1,131)
Proceeds from sale of equity security	3,009	0	0
Acquisition of businesses, net of cash acquired	(15,932)	(97,115)	0
Net cash provided by (used in) investing activities	151,979	(115,655)	(97,573)
Cash flows from financing activities:
Proceeds received from issuance of common stock under employee stock plans	6,136	8,957	11,487
Payments of taxes on restricted stock units	(18,413)	(10,613)	(9,403)
Payments under installment payment arrangements	(14,378)	(12,472)	(13,201)
Repurchase of convertible senior notes	(258,060)	0	0
Proceeds from retirement of convertible senior note hedges	91,729	0	0
Payments for retirement of warrants	(69,528)	0	0
Repurchase and retirement of common stock, including prepayment under accelerated share repurchase program	(100,421)	(100,081)	(50,069)
Net cash used in financing activities	(362,935)	(114,209)	(61,186)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(2,007)	(413)	106
Net increase (decrease) in cash, cash equivalents and restricted cash	17,430	(21,060)	26,806
Cash, cash equivalents and restricted cash at beginning of year	108,264	129,324	102,518
Cash, cash equivalents and restricted cash at end of year	125,694	108,264	129,324
Cash paid during the period for:
Interest	1,525	2,372	2,372
Income taxes, net of refunds	25,275	22,839	21,312
Non-cash investing and financing activities:
Property, plant and equipment received and accrued in accounts payable and other liabilities	39,035	12,935	20,952
Operating lease right-of-use assets obtained in exchange for operating lease obligations	$ 5,931	$ 0	$ 0
Common stock issued pursuant to acquisition	0	6,978	0

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash, cash equivalents and restricted cash
Cash and cash equivalents	$ 125,334	$ 107,891	$ 128,967
Restricted cash	360	373	357
Cash, cash equivalents, restricted cash	$ 125,694	$ 108,264	$ 129,324

Formation and Business of the C

Formation and Business of the Company	12 Months Ended
Formation and Business of the Company	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Formation and Business of the Company	Formation and Business of the Company Rambus Inc. (“Rambus” or the “Company”) was incorporated in California in March 1990 and reincorporated in Delaware in March 1997. In addition to licensing, the Company is creating new business opportunities through offering products and services where its goal is to perpetuate strong company operating performance and long-term stockholder value. The Company generates revenue by licensing its inventions and solutions, selling its semiconductor products and providing services to market-leading companies. Rambus produces products and innovations that address the fundamental challenges of accelerating data. The Company makes industry-leading chips and intellectual property (“IP”) that enable critical performance improvements for data center and other growing markets. The ongoing shift to the cloud, along with the widespread advancement of artificial intelligence (“AI”) across the data center, edge and Internet of Things (“IoT”) end points, has led to exponential growth in data usage and tremendous demands on data infrastructure. Creating fast and safe connections, both in and across systems, remains one of the most mission-critical design challenges limiting performance in advanced hardware for these markets.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Financial Statement Presentation The accompanying consolidated financial statements include the accounts of Rambus and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated on the accompanying consolidated financial statements. Investments in entities with more than 20% ownership by Rambus and in which Rambus has the ability to significantly influence the operations of the investee (but not control) are accounted for using the equity method and are included in other assets. Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Reclassifications Certain prior-year balances were reclassified to conform to the current year’s presentation. None of these reclassifications had an impact on reported net income (loss) or cash flows for any of the periods presented. Revenue Recognition The Company recognizes revenue upon transfer of control of promised goods and services in an amount that reflects the consideration it expects to receive in exchange for those goods and services. Goods and services that are distinct are accounted for as separate performance obligations. Where an arrangement includes multiple performance obligations, the transaction price is allocated to these on a relative standalone selling price basis. The Company has established standalone selling prices for all of its distinct offerings - specifically, the same pricing methodology is consistently applied to all licensing arrangements; all services offerings are priced within tightly controlled bands and all contracts that include support and maintenance state a renewal rate or price that is systematically enforced. The Company’s revenue consists of product, royalty and contract and other revenue. Products primarily consist of memory interface chips sold directly and indirectly to module manufacturers and OEMs worldwide through multiple channels, including its direct sales force and distributors. Royalty revenue consists of patent and technology license royalties. Contract and other revenue consists of software license fees, engineering fees associated with integration of the Company’s technology solutions into its customers’ products and support and maintenance fees. Product Revenue Product revenue is recognized upon shipment of product to customers, net of accruals for estimated sales returns and allowances, and to distributors, net of accruals for price protection and rights of return on products unsold by the distributors. To date, none of these accruals have been material. The Company transacts with direct customers primarily pursuant to standard purchase orders for delivery of products and generally allows customers to cancel or change purchase orders within limited notice periods prior to the scheduled shipment date. Royalty Revenue Rambus’ patent and technology licensing arrangements generally range between one year and ten years in duration and generally grant the licensee the right to use the Company’s entire IP portfolio as it evolves over time. These arrangements do not typically grant the licensee the right to terminate for convenience and where such rights exist, termination is prospective, with no refund of fees already paid or cancellation of fees already incurred by the licensee. There is no interdependency or interrelation between the IP included in the portfolio licensed upon contract inception and any IP subsequently made available to the licensee, and the Company would be able to fulfill its promises by transferring the portfolio and the additional IP use rights independently. However, the numbers of additions to, and removals from the portfolio (for example when a patent expires and renewal is not granted to the Company) in any given period have historically been relatively consistent; as such, the Company does not allocate the transaction price between the rights granted at contract inception and those subsequently granted over time as a function of these additions. Patent and technology licensing arrangements result in fixed payments received over time, with guaranteed minimum payments on occasion, variable payments calculated based on the licensee’s sale or use of the IP, or a mix of fixed and variable payments. • For fixed-fee arrangements (including arrangements that include minimum guaranteed amounts), the Company recognizes revenue upon control over the underlying IP use right transferring to the licensee, net of the effect of significant financing components calculated using customer-specific, risk-adjusted lending rates ranging between 5% and 10%, with the related interest income recognized over time on an effective rate basis. Where a licensee has the contractual right to terminate a fixed-fee arrangement for convenience without any substantive penalty payable upon such termination, the Company applies the guidance in Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers in Accounting Standards Codification (“ASC”) Topic 606 (“ASC 606”) to the duration of the contract in which the parties have present enforceable rights and obligations and only recognizes revenue for amounts that are due and payable. • For variable arrangements, the Company recognizes revenue based on an estimate of the licensee’s sale or usage of the IP during the period of reference, typically quarterly, with a true-up recorded, if required, when the Company receives the actual royalty report from the licensee. • The Company recognizes license renewal revenue at the beginning of the renewal period. Contract and Other Revenue Contract and other revenue consists of software license fees and engineering fees associated with integration of the Company’s technology solutions into its customers’ products, and support and maintenance. An initial software arrangement generally consists of a term-based or perpetual license, significant software customization services and support and maintenance services that include post-implementation customer support and the right to unspecified software updates and enhancements on a when and if available basis. The Company recognizes license and customization services revenue at a point in time when final delivery is made or based on an over time model, depending on the nature and amount of customization. For the over time model, the Company recognizes revenue over time by measuring the progress toward complete satisfaction of that performance obligation. The Company measures progress using an input method. License and customization services revenue recognized over time, which is reported as part of contract and other revenue, was approximately $5.0 million for the year ended December 31, 2022. Due to the nature of the work performed in these arrangements, the estimation of the over time model is complex and involves significant judgment. The key factor reviewed by management to estimate costs to complete each contract is the estimated man-months necessary to complete the project. The Company recognizes support and maintenance revenue over time. Significant Judgments Historically, no significant judgment has generally been required in determining the amount and timing of revenue from the Company’s contracts with customers, except for the following: • There is significant judgment by management in determining the estimated man-months necessary for completing development and customization services. The Company has adequate tools and controls in place, and substantial experience and expertise in timely and accurately tracking man-months incurred in completing customization and other professional services, and quantifying significant changes in estimates. Key estimates used in recognizing revenue predominantly consist of the following: • For contract revenue where the Company recognizes revenue over time, the key factor reviewed by management to estimate costs to complete each contract is the estimated man-months necessary to complete the project. • For fixed-fee arrangements in which cash is being received over a period exceeding a year, the Company calculates a customer-specific lending rate using a Daily Treasury Yield Curve Rate that changes depending on the date on which the licensing arrangement was entered into and the term (in years) of the arrangement, and takes into consideration a licensee-specific risk profile determined based on a review of the licensee’s “Full Company View” Dun & Bradstreet report obtained on the date the licensing arrangement was signed by the parties, with a risk premium being added to the Daily Treasury Yield Curve Rate considering the overall business risk, financing strength and risk indicators, as listed. • The Company recognizes revenue on variable fee licensing arrangements on the basis of sales and usage which the Company is required to estimate prior to receiving the final related reports from its customers. Contract Balances Timing of revenue recognition may differ from the timing of invoicing to the Company’s customers. The Company records contract assets when revenue is recognized prior to invoicing, and a contract liability when revenue is recognized subsequent to invoicing. The contract assets are transferred to receivables when the billing occurs. Cost of Revenue Cost of revenue includes cost of professional services, materials, including cost of wafers processed by third-party foundries, cost associated with packaging and assembly, test and shipping, cost of personnel, including stock-based compensation, and equipment associated with manufacturing support, logistics and quality assurance, warranty cost, amortization of existing technology, write-down of inventories, amortization of production mask costs, overhead and an allocated portion of occupancy costs. Leases The Company leases office space, domestically and internationally, under operating leases. The Company’s leases have remaining lease terms generally between one year and eight years. Operating leases are included in operating lease right-of-use (“ROU”) assets, operating lease liabilities, and long-term operating lease liabilities on the Company’s consolidated balance sheets. The Company does not have any finance leases. The Company determines if an arrangement is a lease, or contains a lease, at inception. The Company assesses all relevant facts and circumstances in making the determination of the existence of a lease. For leases with terms greater than 12 months, the Company records the related asset and obligation at the present value of lease payments over the term. The Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments, and uses the implicit rate when readily determinable. Many of the Company’s leases include rental escalation clauses, renewal options and/or termination options that are factored into the determination of lease payments when appropriate. Leases with an initial term of 12 months or less are not recorded on the balance sheet, and the Company does not separate non-lease components from lease components. Operating lease costs are included in research and development and selling, general and administrative costs on the statement of operations. Goodwill Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business combination. Goodwill is not subject to amortization, but is subject to at least an annual assessment for impairment. The Company performs its impairment analysis of goodwill on an annual basis during the fourth quarter of the year unless conditions arise that warrant a more frequent evaluation. When goodwill is assessed for impairment, the Company has the option to perform an assessment of qualitative factors of impairment (optional assessment) prior to necessitating a quantitative impairment test. Should the optional assessment be used for any given year, qualitative factors to consider for a reporting unit include: cost factors; financial performance; legal, regulatory, contractual, political, business, or other factors; entity specific factors; industry and market considerations; macroeconomic conditions; and other relevant events and factors affecting the reporting unit. If the Company determines in the qualitative assessment that it is more likely than not that the fair value of the reporting unit is less than its carrying value, a quantitative test is then performed. Otherwise, no further testing is required. For a reporting unit tested using a quantitative approach, the Company compares the fair value of the reporting unit with the carrying amount of the reporting unit, including goodwill. The fair value of the reporting unit is estimated using an income approach. Under the income approach, the Company measures fair value of the reporting unit based on a projected cash flow method using a discount rate determined by its management which is commensurate with the risk inherent in its current business model. The Company’s discounted cash flow projections are based on its annual financial forecasts developed internally by management for use in managing its business. If the fair value of the reporting unit exceeds its carrying value, goodwill is not impaired and no further testing is required. If the fair value of the reporting unit is less than the carrying value, then the amount of goodwill impairment will be the amount by which the reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The Company performed its annual goodwill impairment analysis as of December 31, 2022 and determined that there was no impairment of its goodwill. For the years ended December 31, 2021 and 2020, the Company did not recognize any goodwill impairment charges. Intangible Assets Intangible assets are comprised of existing technology, customer contracts and contractual relationships, and other definite-lived and indefinite-lived intangible assets. Identifiable intangible assets resulting from the acquisitions of entities accounted for using the purchase method of accounting are estimated by management based on the fair value of assets received. Identifiable definite-lived intangible assets are being amortized over the period of estimated benefit using the straight-line method and estimated useful lives ranging from six months to ten Acquired indefinite-lived intangible assets related to the Company’s in-process research and development (“IPR&D”) are capitalized and subject to impairment testing until completion or abandonment of the projects. Upon successful completion of each project, the Company makes a separate determination of the useful life of the acquired indefinite-lived intangible assets and the related amortization is recorded as an expense over the estimated useful life of the specific projects. Indefinite-lived intangible assets are subject to at least an annual assessment for impairment, applying a fair-value based test. The Company first performs a qualitative assessment to determine whether it is more likely than not (more than 50 percent likelihood) that the indefinite-lived intangible assets are impaired. If after assessing the totality of events and circumstances and their potential effect on significant inputs to the fair value determination, the Company determines that it is more likely than not that the indefinite-lived intangible assets are impaired, then the Company performs a quantitative impairment test by comparing the fair value of the intangible assets with its carrying amount. The Company measures fair value of the indefinite-lived intangible assets under the income approach based on a projected cash flow method using a discount rate determined by its management which is commensurate with the risk inherent in its current business model. The Company’s discounted cash flow projections are based on its annual financial forecasts developed internally by management for use in managing its business. If the fair value of the indefinite-lived intangible assets exceeds its carrying value, the indefinite-lived intangible assets are not impaired and no further testing is required. If the implied fair value of the indefinite-lived intangible assets is less than the carrying value, the difference is recorded as an impairment loss. Inventories Inventories are stated at the lower of cost or net realizable value. Cost is computed using standard cost, which approximates actual cost, on a first-in, first-out basis. Inventories are reduced for write-downs based on periodic reviews for evidence of slow-moving or obsolete parts. The write-down is based on comparison between inventory on hand and estimated future sales for each specific product. Once written down, inventory write-downs are not reversed until the inventory is sold or scrapped. Inventory write-downs are also established when conditions indicate that the net realizable value is less than cost due to physical deterioration, obsolescence, changes in price level or other causes. Property, Plant and Equipment Property, plant and equipment include computer software, computer equipment, leasehold improvements, machinery, and furniture and fixtures. Computer software, computer equipment, machinery, and furniture and fixtures are stated at cost and generally depreciated on a straight-line basis over an estimated useful life of three years, three years, seven years, and three years, respectively. Refer to Note 11, “Balance Sheet Details,” for additional information. Leasehold improvements are amortized on a straight-line basis over the shorter of their estimated useful lives or the remaining terms of the leases. Upon disposal, assets and related accumulated depreciation are removed from the accounts and the related gain or loss is included in the results from operations. Definite-Lived Asset Impairment The Company evaluates definite-lived assets (including property, plant and equipment and intangible assets) for impairment whenever events or changes in circumstances indicate the carrying value of an asset group may not be recoverable. The carrying value is not recoverable if it exceeds the undiscounted cash flows resulting from the use of the asset group and its eventual disposition. The Company’s estimates of future cash flows attributable to its asset groups require significant judgment based on its historical and anticipated results and are subject to many factors. Factors that the Company considers important which could trigger an impairment review include significant negative industry or economic trends, significant loss of clients, and significant changes in the manner of its use of the acquired assets or the strategy for its overall business. When the Company determines that the carrying value of the asset groups may not be recoverable based upon the existence of one or more of the above indicators of impairment, the Company measures the potential impairment based on a projected discounted cash flow method using a discount rate determined by the Company to be commensurate with the risk inherent in the Company’s current business model. An impairment loss is recognized only if the carrying amount of the asset group is not recoverable and exceeds its fair value. The impairment charge is recorded to reduce the pre-impairment carrying amount of the assets based on the relative carrying amount of those assets, though not to reduce the carrying amount of an asset below its fair value. Different assumptions and judgments could materially affect the calculation of the fair value of the assets. During 2022, 2021 and 2020, the Company did not recognize any impairment of its definite-lived and indefinite-lived assets. Income Taxes Income taxes are accounted for using an asset and liability approach, which requires the recognition of deferred tax assets and liabilities for expected future tax events that have been recognized differently on the Company’s consolidated financial statements and tax returns. The measurement of current and deferred tax assets and liabilities is based on provisions of the enacted tax law and the effects of future changes in tax laws or rates are not anticipated. A valuation allowance is established when necessary to reduce deferred tax assets to amounts expected to be realized based on available evidence. In addition, the calculation of the Company’s tax liabilities involves dealing with uncertainties in the application of complex tax regulations. As a result, the Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in its tax return. The Company considers many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately anticipate actual outcomes. Stock-Based Compensation and Equity Incentive Plans The Company maintained stock plans covering a broad range of equity grants including stock options, nonvested equity stock and equity stock units and performance-based instruments. In addition, the Company sponsors an Employee Stock Purchase Plan (“ESPP”), whereby eligible employees are entitled to purchase common stock semi-annually, by means of limited payroll deductions, at a 15% discount from the fair market value of the common stock as of specific dates. The Company determines compensation expense associated with restricted stock units based on the fair value of its common stock on the date of grant. The Company determines compensation expense associated with stock options based on the estimated grant-date fair value method using the Black-Scholes Merton (“BSM”) valuation model. The Company generally recognizes compensation expense using a straight-line amortization method over the respective vesting period for awards that are ultimately expected to vest. Stock-based compensation expense for the years ended December 31, 2022, 2021 and 2020 has been reduced for estimated forfeitures. When estimating forfeitures, the Company considers voluntary termination behaviors, as well as trends of actual option forfeitures. Cash and Cash Equivalents Cash equivalents are highly liquid investments with original maturity of three months or less at the date of purchase. The Company maintains its cash balances with high quality financial institutions. Cash equivalents are invested in highly-rated and highly-liquid money market securities and certain U.S. government sponsored obligations. Marketable Securities Rambus invests its excess cash and cash equivalents primarily in U.S. government-sponsored obligations, commercial paper, corporate notes and bonds, and money market funds that mature within three years. Available-for-sale securities are carried at fair value, based on quoted market prices, with the unrealized gains or losses reported, net of tax, in stockholders’ equity as part of accumulated other comprehensive income (loss). The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity, both of which are included in interest and other income, net. Realized gains and losses are recorded on the specific identification method and are included in interest and other income, net. The Company reviews its investments in marketable securities for possible other than temporary impairments on a regular basis. If any loss on investment is believed to be a credit loss, a charge will be recognized in operations. In evaluating whether a credit loss on a debt security has occurred, the Company considers the following factors: 1) the Company’s intent to sell the security, 2) if the Company intends to hold the security, whether or not it is more likely than not that the Company will be required to sell the security before recovery of the security’s amortized cost basis and 3) even if the Company intends to hold the security, whether or not the Company expects the security to recover the entire amortized cost basis. Due to the high credit quality and short-term nature of the Company’s investments, there have been no material credit losses recorded to date. The classification of funds between short-term and long-term is based on whether the securities are available for use in operations or other purposes. Fair Value of Financial Instruments The fair value measurement statement defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, and requires disclosure that establishes a framework for measuring fair value and expands disclosure about fair value measurements. The statement requires that fair value measurement be classified and disclosed in one of the following three categories: Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. The Company uses unadjusted quotes to determine fair value. The financial assets in Level 1 include money market funds. Level 2: Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability. The Company uses observable pricing inputs including benchmark yields, reported trades, and broker/dealer quotes. The financial assets in Level 2 include U.S. government bonds and notes, corporate notes, and commercial paper. Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). When determining fair value, the Company considers the principal or most advantageous market in which the Company would transact, and the Company considers assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions, and risk of non-performance. The Company does not have any financial assets or liabilities in Level 3 as of December 31, 2022 and 2021, except for the Company’s liability for the earn-out consideration related to the PLDA acquisition. The Company has classified this liability within Level 3 of the fair value hierarchy because the fair value is determined using significant unobservable inputs. Refer to Note 20, “Acquisitions , ” for additional information. The carrying value of cash equivalents, accounts receivable and accounts payable approximate their fair values due to their relatively short maturities as of December 31, 2022 and 2021. The Company’s financial instruments are measured and recorded at fair value, except for equity method investments and convertible notes. Marketable securities are comprised of available-for-sale securities that are reported at fair value with the related unrealized gains and losses included in accumulated other comprehensive income (loss), a component of stockholders’ equity, net of tax. Fair value of the marketable securities is determined based on quoted market prices. The fair value of the Company’s convertible notes fluctuates with interest rates and with the market price of the common stock, but does not affect the carrying value of the debt on the balance sheet. The Company’s non-financial assets, such as goodwill, intangible assets, and property, plant and equipment, are measured at fair value when there is an indicator of impairment and recorded at fair value only when an impairment charge is recognized. The Company’s equity method investments are initially recognized at cost, and the carrying amount is increased or decreased to recognize the Company’s share of the profit or loss of the investee after the date of acquisition. The Company’s share of the investee’s profit or loss is recognized on the Company’s consolidated statements of operations. Distributions received from an investee reduce the carrying amount of the investment. Research and Development Costs incurred in research and development, which include engineering expenses, such as salaries and related benefits, stock-based compensation, depreciation, professional services and overhead expenses related to the general development of the Company’s products, are expensed as incurred. Software development costs are capitalized beginning when a product’s technological feasibility has been established and ending when a product is available for general release to customers. The Company has not capitalized any software development costs since the period between establishing technological feasibility and general customer release is relatively short and as such, these costs have not been material. Computation of Earnings (Loss) Per Share Basic earnings (loss) per share is calculated by dividing the net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted earnings (loss) per share is calculated by dividing the earnings (loss) by the weighted-average number of common shares and potentially dilutive securities outstanding during the period. Potentially dilutive common shares consist of incremental common shares issuable upon exercise of stock options, employee stock purchases, restricted stock and restricted stock units, and shares issuable upon the conversion of convertible notes. The dilutive effect of outstanding shares is reflected in diluted earnings per share by application of the treasury stock method, or the if-converted method for the in-the-money conversion benefit feature of the 2023 Notes. This method includes consideration of the amounts to be paid by the employees, the amount of excess tax benefits that would be recognized in equity if the instrument was exercised and the amount of unrecognized stock-based compensation related to future services. No potential dilutive common shares are included in the computation of any diluted per share amount when a net loss is reported. Comprehensive Income (Loss) Comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources, including foreign currency translation adjustments and unrealized gains and losses on marketable securities. Other comprehensive income (loss), net of tax, is presented on the consolidated statements of comprehensive income (loss). Credit Concentration As of December 31, 2022 and 2021, the Company’s cash, cash equivalents and marketable securities were invested with various financial institutions in the form of corporate notes, bonds and commercial paper, money market funds, U.S. Treasuries and U.S. Government Agencies. The Company’s exposure to market risk for changes in interest rates relates primarily to its investment portfolio. The Company places its investments with high credit issuers and, by investment policy, attempts to limit the amount of credit exposure to any one issuer. As stated in the Company’s investment policy, it will ensure the safety and preservation of the Company’s invested funds by limiting default risk and market risk. The Company has no investments denominated in foreign country currencies and therefore is not subject to foreign exchange risk from these assets. The Company holds cash, cash equivalents and marketable securities in excess of federally insured limits. The Company mitigates default risk by investing in high credit quality securities and by positioning its portfolio to respond appropriately to a significant reduction in a credit rating of any investment issuer or guarantor. The portfolio includes only marketable securities with active secondary or resale markets to enable portfolio liquidity. The Company’s note hedge transactions, entered into in connection with the 1.375% convertible senior notes due 2023 (the “2023 Notes”), expose the Company to credit risk to the extent that its counterparties may be unable to meet the terms of the transactions. The Company mitigates this risk by limiting its counterparties to major financial institutions. Refer to Note 12, “Convertible Notes,” for additional information. The Company’s accounts receivable are derived from revenue earned from customers located in the U.S. and internationally. Refer to Note 7, “Se

Recent Accounting Pronouncement

Recent Accounting Pronouncements	12 Months Ended
Recent Accounting Pronouncements	Dec. 31, 2022
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recent Accounting Pronouncements Adopted In August 2020, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2020-06, “Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40) (“ASU 2020-06”).” The amendments in this ASU simplify the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts in an entity’s own equity. Among other changes, the guidance removes the liability and equity separation models for convertible instruments. Instead, entities will account for convertible debt instruments wholly as debt unless convertible instruments contain features that require bifurcation as a derivative or that result in substantial premiums accounted for as paid-in capital. The guidance also requires the application of the if-converted method to calculate the impact of convertible instruments on diluted earnings per share. The guidance is effective for fiscal years beginning after December 15, 2021. The Company adopted this guidance on January 1, 2022 on a modified retrospective basis. Upon adoption, the Company reversed approximately $35.2 million of debt discount related to the Company’s 1.375% Convertible Senior Notes due 2023 (the “2023 Notes”) from additional paid-in capital, reversed approximately $8.3 million representing the unamortized debt discount from liabilities, and recorded the net impact of $26.9 million to accumulated deficit. The Company also removed approximately $0.7 million of debt issuance costs related to the 2023 Notes from additional paid-in capital and recorded approximately $0.5 million to accumulated deficit related to the amortization of debt issuance costs that were historically allocated to equity. The Company expects reported interest expense for its convertible notes to decrease this year and in the future. In October 2021, the FASB issued ASU No. 2021-08, “Business Combinations (Topic 805)—Accounting for Contract Assets and Contract Liabilities from Contracts with Customers.” The amendments in this ASU improve the accounting for acquired revenue contracts with customers in a business combination by addressing diversity in practice and inconsistencies related to recognition of an acquired contract liability, and to payment terms and their effect on subsequent revenue recognized by the acquirer. Among other changes, this ASU requires that an acquirer account for acquired revenue contracts in accordance with Topic 606 as if it had originated the contracts. If the acquirer is unable to assess or rely on how the acquiree applied Topic 606, the acquirer should consider the terms of the acquired contracts as of the contract inception or contract modification date in applying Topic 606 to determine what should be recorded at the acquisition date. The amendments also provide certain practical expedients for acquirers when recognizing and measuring acquired contract assets and contract liabilities from revenue contracts in a business combination. The guidance is effective for fiscal years beginning after December 15, 2022. The Company elected to early adopt this ASU on April 1, 2022. The adoption of this ASU did not have a material impact on the Company's consolidated financial statements.

Revenue Recognition (Notes)

Revenue Recognition (Notes)	12 Months Ended
Revenue Recognition (Notes)	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition Contract Balances The contract assets are primarily related to the Company’s fixed fee IP licensing arrangements and rights to consideration for performance obligations delivered but not billed as of December 31, 2022. The Company’s contract balances were as follows: As of December 31, (In thousands) 2022 2021 Unbilled receivables $ 150,920 $ 258,626 Deferred revenue 25,421 26,198 During the years ended December 31, 2022 and December 31, 2021, the Company recognized $23.6 million and $10.2 million, respectively, of revenue that was included in the contract balances as of December 31, 2021 and December 31, 2020, respectively. Remaining Performance Obligations Revenue allocated to remaining performance obligations represents the transaction price allocated to the performance obligations that are unsatisfied, or partially unsatisfied, which includes unearned revenue and amounts that will be invoiced and recognized as revenue in future periods. Contracted but unsatisfied performance obligations were approximately $28.8 million as of December 31, 2022, which the Company primarily expects to recognize over the next 2 years.

Earnings (Loss) Per Share

Earnings (Loss) Per Share	12 Months Ended
Earnings (Loss) Per Share	Dec. 31, 2022
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	Earnings (Loss) Per Share The following table sets forth the computation of basic and diluted income (loss) per share: For the Years Ended December 31, (In thousands, except per share amounts) 2022 2021 2020 Net income (loss) per share: Numerator: Net income (loss) $ (14,310) $ 18,334 $ (40,471) Denominator: Weighted-average common shares outstanding - basic 109,472 110,538 113,254 Effect of potential dilutive common shares — 4,327 — Weighted-average common shares outstanding - diluted 109,472 114,865 113,254 Basic net income (loss) per share $ (0.13) $ 0.17 $ (0.36) Diluted net income (loss) per share $ (0.13) $ 0.16 $ (0.36) The following potentially dilutive securities were excluded from the calculation of diluted net loss per share attributable to the Company’s common stockholders for the periods presented because the impact of including them would have been anti-dilutive (in thousands): For the Years Ended December 31, (In thousands) 2022 2020 Stock options 282 227 Restricted stock units 2,361 2,067 Potentially issuable shares related to the in-the-money conversion benefit feature of convertible notes 175 — Contingently issuable ESPP shares — 12 Total 2,818 2,306 The potentially dilutive securities during the year ended December 31, 2021 were immaterial. The shares in the table above do not include the par amount of the Company’s 2023 Notes. The par amount of convertible notes is payable in cash equal to the principal amount of the notes plus any accrued and unpaid interest and then the “in-the-money” conversion benefit feature at the conversion price above $18.93 per share is payable in cash, shares of the Company’s common stock or a combination of both. The Company has the option to pay cash, issue shares of common stock or any combination thereof for the aggregate amount due upon conversion of the notes. The Company’s intent is to settle the principal amount of the notes in cash upon conversion. As a result, upon conversion of the notes, only the amounts payable in excess of the principal amounts of the notes are considered in diluted earnings per share under the treasury stock method. During the year ended December 31, 2021, the Company’s stock price exceeded the 2023 Notes’ conversion price of $18.93 per share, therefore approximately 1.4 million shares were included in the weighted-average dilutive shares. Refer to Note 12, “Convertible Notes,” for additional information. As a result of the Company’s adoption of ASU No. 2020-06 on January 1, 2022, the dilutive impact of the 2023 Notes on the calculation of diluted net income (loss) per share is considered using the if-converted method. Furthermore, because the principal amount of the 2023 Notes must be settled in cash, the dilutive impact of applying the if-converted method is limited to the in-the-money portion, if any, of the 2023 Notes. For periods prior to the Company’s January 1, 2022 adoption of ASU No. 2020-06, the Company applied the treasury stock method to account for the dilutive impact of the 2023 Notes for diluted net income (loss) per share purposes. As noted in ASU No. 2020-06, for convertible instruments where the principal is required to be paid in cash, the results of applying the if-converted method are similar to the results of applying the historical treasury stock method. Therefore, even though the Company is required to apply the if-converted method upon adoption of ASU No. 2020-06, there is no impact to its earnings per share calculation. Under the if-converted method, the cumulative dilutive effect of the 2023 Notes would be approximately 0.5 million shares, if the shares had been dilutive. Refer to Note 12, “Convertible Notes,” for additional information.

Intangible Assets and Goodwill

Intangible Assets and Goodwill	12 Months Ended
Intangible Assets and Goodwill	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets and Goodwill	Intangible Assets and Goodwill Goodwill The following tables present goodwill information for the years ended December 31, 2022 and December 31, 2021: (In thousands) December 31, Addition to Goodwill (1) Adjustments to Goodwill (2) Effect of Exchange Rates (3) December 31, Total goodwill $ 278,810 $ 12,069 $ 1,013 $ 148 $ 292,040 ______________________________________ (1) In May 2022, the Company acquired Hardent, Inc. (“Hardent”), which resulted in the Company recognizing additional goodwill. Refer to Note 20, “Acquisitions,” for additional information. (2) The adjustments to goodwill primarily include a correction of an immaterial error related to an understatement in other current liabilities that originated from the acquisition of AnalogX Inc. (“AnalogX”) in 2021 and working capital adjustments from the acquisition of Hardent. (3) Effect of exchange rates relates to foreign currency translation adjustments for the period. As of December 31, 2022 (In thousands) Gross Carrying Amount Accumulated Impairment Losses Net Carrying Amount Total goodwill $ 313,810 $ (21,770) $ 292,040 (In thousands) December 31, Additions to Goodwill (1) December 31, Total goodwill $ 183,222 $ 95,588 $ 278,810 ______________________________________ (1) In July 2021, the Company acquired AnalogX and in August 2021, the Company acquired PLDA, which resulted in the Company recognizing additional goodwill. Refer to Note 20, “Acquisitions,” for additional information. As of December 31, 2021 (In thousands) Gross Carrying Amount Accumulated Impairment Losses Net Carrying Amount Total goodwill $ 300,580 $ (21,770) $ 278,810 Intangible Assets, Net The components of the Company’s intangible assets as of December 31, 2022 and December 31, 2021 were as follows: As of December 31, 2022 (In thousands, except useful life) Useful Life Gross Carrying Amount (1) Accumulated Amortization (1) Net Carrying Amount Existing technology 3 to 10 years $ 299,925 $ (261,708) $ 38,217 Customer contracts and contractual relationships 0.5 to 10 years 37,996 (36,533) 1,463 Non-compete agreements and trademarks 3 years 300 (300) — IPR&D Not applicable 11,200 — 11,200 Total intangible assets $ 349,421 $ (298,541) $ 50,880 ______________________________________ (1) During the year ended December 31, 2022, the Company acquired certain intangible assets for $3.0 million in cash. The assets were classified as existing technology and are being amortized over their expected useful life of five years. During the year ended December 31, 2022, the amortization for the acquired assets was not material. (2) In May 2022, the Company acquired Hardent, which resulted in the Company recognizing additional intangible assets. Refer to Note 20, “Acquisitions,” for additional information. As of December 31, 2021 (In thousands, except useful life) Useful Life Gross Carrying Amount (1) Accumulated Amortization (1) Net Carrying Amount Existing technology 3 to 10 years $ 292,058 $ (247,422) $ 44,636 Customer contracts and contractual relationships 0.5 to 10 years 37,793 (35,209) 2,584 Non-compete agreements and trademarks 3 years 300 (300) — IPR&D Not applicable 11,200 — 11,200 Total intangible assets $ 341,351 $ (282,931) $ 58,420 ______________________________________ (1) In July 2021, the Company acquired AnalogX and in August 2021, the Company acquired PLDA, which resulted in the Company recognizing additional intangible assets. Refer to Note 20, “Acquisitions,” for additional information. Amortization expense for intangible assets for the years ended December 31, 2022, 2021, and 2020 was $15.6 million, $17.5 million, and $18.4 million, respectively. The estimated future amortization expense of intangible assets as of December 31, 2022 was as follows (in thousands): Years Ending December 31: Amount 2023 $ 15,388 2024 12,736 2025 6,696 2026 4,378 2027 482 Thereafter — Total amortizable purchased intangible assets 39,680 IPR&D 11,200 Total intangible assets $ 50,880

Segment Information

Segment Information	12 Months Ended
Segment Information	Dec. 31, 2022
Segment Reporting [Abstract]
Segment Information	Segments and Major Customers Operating segments are based upon the Company’s internal organization structure, the manner in which its operations are managed, the criteria used by its Chief Operating Decision Maker (“CODM”) to evaluate segment performance and availability of separate financial information regularly reviewed for resource allocation and performance assessment. The Company has determined its CODM to be the Chief Executive Officer (“CEO”). The CEO reviews financial information presented on a consolidated basis for purposes of managing the business, allocating resources, making operating decisions and assessing financial performance. On this basis, the Company is organized and operates as a single segment within the semiconductor space. As of December 31, 2022, the Company has a single operating and reportable segment. Accounts receivable from the Company’s major customers representing 10% or more of total accounts receivable at December 31, 2022 and 2021, respectively, was as follows: As of December 31, Customer 2022 2021 Customer 1 23 % 17 % Customer 2 16 % * Customer 3 14 % 19 % _________________________________________ * Customer accounted for less than 10% of total accounts receivable in the period. Revenue from the Company’s major customers representing 10% or more of total revenue for the years ended December 31, 2022, 2021 and 2020, respectively, was as follows: Years Ended December 31, Customer 2022 2021 2020 Customer A 19 % 21 % 12 % Customer B 17 % 13 % * Customer C 14 % 11 % 15 % _________________________________________ * Customer accounted for less than 10% of total revenue in the period. Revenue from customers in the geographic regions based on the location of contracting parties was as follows: Years Ended December 31, (In thousands) 2022 2021 2020 USA $ 277,776 $ 211,419 $ 137,614 Singapore 57,309 39,798 28,034 Asia-Other 54,421 28,949 26,249 Taiwan 35,116 23,953 21,803 Japan 16,516 14,894 20,437 South Korea 7,222 6,007 3,664 Europe 6,213 3,165 7,359 Canada 220 119 1,162 Total $ 454,793 $ 328,304 $ 246,322 At December 31, 2022, of the $86.3 million of total property, plant and equipment, approximately $80.5 million were located in the United States, $3.4 million were located in India and $2.4 million were located in other foreign locations. At December 31, 2021, of the $56.0 million of total property, plant and equipment, approximately $49.8 million were located in the United States, $3.2 million were located in India and $3.0 million were located in other foreign locations.

Marketable Securities

Marketable Securities	12 Months Ended
Marketable Securities	Dec. 31, 2022
Debt Securities, Available-for-Sale [Abstract]
Marketable Securities	Marketable Securities All cash equivalents and marketable securities are classified as available-for-sale. Total cash, cash equivalents and marketable securities are summarized as follows: As of December 31, 2022 (In thousands, except percentages) Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Weighted Rate of Return Money market funds $ 15,763 $ 15,763 $ — $ — 2.63 % U.S. Government bonds and notes 96,371 98,250 1 (1,880) 1.73 % Corporate notes, bonds and commercial paper 106,355 108,092 7 (1,744) 2.59 % Total cash equivalents and marketable securities 218,489 222,105 8 (3,624) Cash 94,737 94,737 — — Total cash, cash equivalents and marketable securities $ 313,226 $ 316,842 $ 8 $ (3,624) As of December 31, 2021 (In thousands, except percentages) Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Weighted Rate of Return Money market funds $ 7,402 $ 7,402 $ — $ — 0.02 % U.S. Government bonds and notes 102,812 103,113 — (301) 0.29 % Corporate notes, bonds and commercial paper 287,905 288,667 8 (770) 0.22 % Total cash equivalents and marketable securities 398,119 399,182 8 (1,071) Cash 87,490 87,490 — — Total cash, cash equivalents and marketable securities $ 485,609 $ 486,672 $ 8 $ (1,071) Available-for-sale securities are reported at fair value on the balance sheets and classified along with cash as follows: As of December 31, (In thousands) 2022 2021 Cash equivalents $ 30,597 $ 20,401 Short-term marketable securities 187,892 377,718 Total cash equivalents and marketable securities 218,489 398,119 Cash 94,737 87,490 Total cash, cash equivalents and marketable securities $ 313,226 $ 485,609 The Company continues to invest in highly rated and highly liquid debt securities. The Company holds all of its marketable securities as available-for-sale, marks them to market, and regularly reviews its portfolio to ensure adherence to its investment policy and to monitor individual investments for risk analysis, proper valuation, and unrealized losses that may be other than temporary. The estimated fair value and gross unrealized losses of cash equivalents and marketable securities classified by the length of time that the securities have been in a continuous unrealized loss position at December 31, 2022 and 2021 are as follows: Fair Value Gross Unrealized Losses (In thousands) December 31, December 31, December 31, December 31, Less than 12 months U.S. Government bonds and notes $ 28,893 $ 82,822 $ (23) $ (301) Corporate notes, bonds and commercial paper 45,538 255,783 (35) (770) Total cash equivalents and marketable securities in a continuous unrealized loss position for less than 12 months 74,431 338,605 (58) (1,071) 12 months or greater U.S. Government bonds and notes 62,588 — (1,857) — Corporate notes, bonds and commercial paper 49,559 — (1,709) — Total cash equivalents and marketable securities in a continuous unrealized loss position for 12 months or greater 112,147 — (3,566) — Total cash equivalents and marketable securities in a continuous unrealized loss position $ 186,578 $ 338,605 $ (3,624) $ (1,071) The gross unrealized losses at December 31, 2022 and 2021 were not material in relation to the Company’s total available-for-sale portfolio. The gross unrealized losses can be primarily attributed to a combination of market conditions, as well as the demand for and duration of the U.S. government-sponsored obligations and corporate notes, bonds and commercial paper. The Company does not intend to sell these investments and it is not more likely than not that the Company will be required to sell these investments before the recovery of its related amortized cost. The Company has found no evidence of impairment due to credit losses in its portfolio. Therefore, these unrealized losses were recorded in other comprehensive income (loss). However, the Company cannot provide any assurance that its portfolio of cash, cash equivalents and marketable securities will not be impacted by adverse conditions in the financial markets, which may require the Company in the future to record an impairment charge for credit losses which could adversely impact its financial results. The contractual maturities of cash equivalents (excluding money market funds which have no maturity) and marketable securities are summarized as follows: (In thousands) December 31, Due less than one year $ 177,356 Due from one year through three years 25,370 Total $ 202,726 Refer to Note 9, “Fair Value of Financial Instruments,” for a discussion regarding the fair value of the Company’s cash equivalents and marketable securities.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
Fair Value of Financial Instruments	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments The following table presents the financial instruments and liabilities that are carried at fair value and summarizes their valuation by the respective pricing levels detailed in Note 2, “Summary of Significant Accounting Policies,” as of December 31, 2022 and 2021: As of December 31, 2022 (In thousands) Total Quoted Market Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs Assets carried at fair value Money market funds $ 15,763 $ 15,763 $ — $ — U.S. Government bonds and notes 96,371 — 96,371 — Corporate notes, bonds and commercial paper 106,355 — 106,355 — Total assets carried at fair value $ 218,489 $ 15,763 $ 202,726 $ — Liabilities carried at fair value Earn-out consideration related to PLDA acquisition $ 14,800 $ — $ — $ 14,800 Total liabilities carried at fair value $ 14,800 $ — $ — $ 14,800 As of December 31, 2021 (In thousands) Total Quoted Market Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs Assets carried at fair value Money market funds $ 7,402 $ 7,402 $ — $ — U.S. Government bonds and notes 102,812 — 102,812 — Corporate notes, bonds and commercial paper 287,905 — 287,905 — Total assets carried at fair value $ 398,119 $ 7,402 $ 390,717 $ — Liabilities carried at fair value Earn-out consideration related to PLDA acquisition $ 16,900 $ — $ — $ 16,900 Total liabilities carried at fair value $ 16,900 $ — $ — $ 16,900 The Company’s liabilities related to earn-out consideration are classified within Level 3 of the fair value hierarchy because the fair value is determined using significant unobservable inputs. The following table presents additional information about liabilities measured at fair value for which the Company utilizes Level 3 inputs to determine fair value, as of December 31, 2022 and 2021: Years Ended December 31, (In thousands) 2022 2021 2020 Balance as of January 1 $ 16,900 $ — $ 1,800 Addition of earn-out liability due to acquisition — 11,600 — Change in fair value of earn-out liability due to remeasurement 3,111 5,300 (1,800) Change in fair value of earn-out liability due to achievement of revenue target (5,211) — — Balance as of December 31 $ 14,800 $ 16,900 $ — For the years ended December 31, 2022 and 2021, the change in the fair value of the earn-out liability related to the 2021 acquisition of PLDA, which is subject to certain revenue targets of the acquired business for a period of three years from the date of acquisition. During the year ended December 31, 2022, the first-year earn-out target was achieved, and the fair value relating to the remaining two years of the earn-out period were remeasured. As a result of these adjustments, the Company recorded a net loss of $2.1 million on the Company’s consolidated statements of operations. During the year ended December 31, 2021, the Company remeasured the fair value of the earn-out liability, which resulted in an additional expense of $5.3 million on the Company’s consolidated statements of operations. During the year ended December 31, 2020, the Company recorded a full reduction in the fair value of the earn-out liability related to the 2019 asset purchase agreement to acquire the Secure Silicon IP and Protocols business from Verimatrix, formerly Inside Secure, since the specified performance milestones were not met for the year ended December 31, 2020, which resulted in a gain on the Company’s consolidated statements of operations. The Company monitors its investments for other-than-temporary impairment and records appropriate reductions in carrying value when necessary. The Company monitors its investments for other-than-temporary losses by considering current factors, including the economic environment, market conditions, operational performance and other specific factors relating to the business underlying the investment, reductions in carrying values when necessary and the Company’s ability and intent to hold the investment for a period of time which may be sufficient for anticipated recovery in the market. Any other-than-temporary loss is reported under “Interest and other income (expense), net” on the consolidated statement of operations. During the years ended December 31, 2022 and 2021, the Company recorded no other-than-temporary impairment charges on its investments. During the second half of 2018, the Company made an investment in a non-marketable equity security of a private company. This equity investment is accounted for under the equity method of accounting, and the Company accounts for its equity method share of the income (loss) on a quarterly basis. As of December 31, 2022 and December 31, 2021, the carrying value of the Company’s 25.0% ownership percentage was $0.5 million and $1.8 million, respectively, which were included in other assets on the accompanying consolidated balance sheets. The Company recorded immaterial amounts on its consolidated statements of operations representing its share of the investee’s loss for the years ended December 31, 2022, 2021 and 2020. During the year ended December 31, 2022, the Company recorded a gain on fair value of approximately $3.5 million related to the sale of an equity security with an immaterial carrying value on its consolidated statement of operations. During the years ended December 31, 2022 and 2021, there were no transfers of financial instruments between different categories of fair value. The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure as of December 31, 2022 and 2021: As of December 31, 2022 As of December 31, 2021 (In thousands) Face Carrying Value Fair Face Carrying Value Fair 1.375% Convertible Senior Notes due 2023 (the “2023 Notes”) $ 10,381 $ 10,378 $ 19,625 $ 172,500 $ 163,687 $ 254,103 The fair value of the convertible notes at each balance sheet date is determined based on recent quoted market prices for these notes which is a level 2 measurement. As discussed in Note 12, “Convertible Notes,” as of December 31, 2022, the convertible notes were carried at their face value of $10.4 million, less any unamortized debt discount and unamortized debt issuance costs. The carrying value of other financial instruments, including accounts receivable, accounts payable and other liabilities, approximated fair value due to their short maturities. Information regarding the Company’s goodwill and long-lived assets balances are disclosed in Note 6, “Intangible Assets and Goodwill.”

Leases (Notes)

Leases (Notes)	12 Months Ended
Leases (Notes)	Dec. 31, 2022
Leases [Abstract]
Leases	Leases On July 8, 2019, the Company entered into a lease agreement with 237 North First Street Holdings, LLC (the “Landlord”), whereby the Company leases office space located at 4453 North First Street in San Jose, California, (the “Lease”). In April 2020, the lease was amended for certain terms (the “Amended Lease”). The Amended Lease includes approximately 90,000 square feet of office space, which serves as the Company’s corporate headquarters and includes engineering, sales, marketing and administrative functions. The Amended Lease has a term of 128 months from the amended commencement date in April 2020. The starting rent of the Amended Lease was approximately $3.26 per square foot on a triple net basis. The annual base rent increases each year to certain fixed amounts over the course of the term as set forth in the Amended Lease and will be $4.38 per square foot in the final year of the Amended Lease term. In addition to the base rent, the Company will also pay operating expenses, insurance expenses, real estate taxes, and a management fee under the Amended Lease. The Amended Lease also allows for an option to expand, wherein the Company has the right of first refusal to rent additional space in the building. The Company has a one-time option to extend the Amended Lease for a period of 60 months and may elect to terminate the Amended Lease, via written notice to the Landlord, in the event the office space is damaged or destroyed. Total required payments under the Amended Lease are approximately $41 million. Pursuant to the terms of the Amended Lease, the landlord agreed to reimburse the Company up to $9.0 million related to a tenant improvement allowance. During the year ended December 31, 2021, the Company received approximately $9.0 million from the landlord in total reimbursements related to the tenant improvement allowance. The table below reconciles the undiscounted cash flows for the first five years and total of the remaining years to the operating lease liabilities recorded on the consolidated balance sheet as of December 31, 2022 (in thousands): Years ending December 31, Amount 2023 $ 6,606 2024 5,279 2025 5,349 2026 5,576 2027 4,746 Thereafter 12,996 Total minimum lease payments 40,552 Less: amount of lease payments representing interest (6,449) Present value of future minimum lease payments 34,103 Less: current obligations under leases (5,024) Long-term lease obligations $ 29,079 As of December 31, 2022, the weighted-average remaining lease term for the Company’s operating leases was 7.1 years, and the weighted-average discount rate used to determine the present value of the Company’s operating leases was 5.3%. Operating lease costs included in research and development and selling, general and administrative costs on the statements of operations were $7.5 million, $7.4 million and $9.5 million for the years ended December 31, 2022, 2021 and 2020, respectively. Cash paid for amounts included in the measurement of operating lease liabilities were $8.6 million, $7.8 million and $7.2 million for the years ended December 31, 2022, 2021 and 2020, respectively.

Balance Sheet Details

Balance Sheet Details	12 Months Ended
Balance Sheet Details	Dec. 31, 2022
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Details	Balance Sheet Details Inventories Inventories consisted of the following: As of December 31, (In thousands) 2022 2021 Raw materials $ 4,683 $ 3,879 Work in process 8,341 1,536 Finished goods 7,876 3,067 Total $ 20,900 $ 8,482 Property, Plant and Equipment, net Property, plant and equipment, net is comprised of the following: As of December 31, (In thousands) 2022 2021 Computer software $ 59,500 $ 51,922 Computer equipment 36,865 34,484 Leasehold improvements 32,384 34,120 Machinery 19,587 14,840 Furniture and fixtures 12,664 13,328 Construction in progress 6,949 1,813 Property, plant and equipment, gross 167,949 150,507 Less accumulated depreciation and amortization (81,694) (94,472) Property, plant and equipment, net $ 86,255 $ 56,035 Depreciation expense for the years ended December 31, 2022, 2021 and 2020 was $26.0 million, $21.0 million and $22.1 million, respectively. Accumulated Other Comprehensive Gain (Loss) Accumulated other comprehensive gain (loss) is comprised of the following: As of December 31, (In thousands) 2022 2021 Foreign currency translation adjustments $ (1,195) $ (237) Unrealized loss on available-for-sale securities, net of tax (3,768) (1,215) Total $ (4,963) $ (1,452)

Convertible Notes

Convertible Notes	12 Months Ended
Convertible Notes	Dec. 31, 2022
Debt Disclosure [Abstract]
Convertible Notes	Convertible Notes The Company’s convertible notes are shown in the following table: As of December 31, (In thousands) 2022 2021 2023 Notes $ 10,381 $ 172,500 Unamortized discount — 2023 Notes (1) — (8,266) Unamortized debt issuance costs — 2023 Notes (3) (547) Total convertible notes 10,378 163,687 Less current portion 10,378 163,687 Total long-term convertible notes $ — $ — _________________________________________ (1) On January 1, 2022, the Company adopted ASU No. 2020-06. Refer to Note 3, “Recent Accounting Pronouncements,” for additional information. 1.375% Convertible Senior Notes due 2023. On November 17, 2017, the Company issued $172.5 million aggregate principal amount of 1.375% convertible senior notes pursuant to an indenture (the “2023 Indenture”), by and between the Company and U.S. Bank National Association, as trustee (the “Trustee”). In accounting for the 2023 Notes at issuance and prior to the adoption of ASU No. 2020-06, the Company had separated the 2023 Notes into liability and equity components pursuant to the accounting standards for convertible debt instruments that may be fully or partially settled in cash upon conversion. As of the date of issuance, the Company determined that the liability component of the 2023 Notes was $137.3 million and the equity component of the 2023 Notes was $35.2 million. The fair value of the liability component was estimated using an interest rate for a similar instrument without a conversion feature. The unamortized discount related to the 2023 Notes was being amortized to interest expense using the effective interest method over approximately five years. As a result of the adoption of ASU No. 2020-06 on January 1, 2022, the Company reversed approximately $35.2 million of debt discount related to the 2023 Notes from additional paid-in capital, reversed approximately $8.3 million representing the unamortized debt discount from liabilities, and recorded the net impact of $26.9 million to accumulated deficit. Refer to Note 3, “Recent Accounting Pronouncements,” for additional information. The 2023 Notes bear interest at a rate of 1.375% per year, payable semi-annually on February 1 and August 1 of each year, beginning on August 1, 2018. The 2023 Notes will mature on February 1, 2023, unless earlier repurchased by the Company or converted pursuant to their terms. The Company incurred transaction costs of approximately $3.3 million related to the issuance of the 2023 Notes. In accounting for these costs and prior to the adoption of ASU No. 2020-06, the Company had allocated the costs to the liability and equity components in proportion to the allocation of proceeds from the issuance of the 2023 Notes to such components. Transaction costs allocated to the liability component of $2.6 million were netted against the carrying amount of the liability in the consolidated balance sheet and are amortized to interest expense using the effective interest method over the term of the 2023 Notes. The transaction costs allocated to the equity component of $0.7 million were recorded as additional paid-in capital. As a result of the adoption of ASU No. 2020-06 on January 1, 2022, the Company removed approximately $0.7 million of debt issuance costs related to the 2023 Notes from additional paid-in capital and recorded approximately $0.5 million to accumulated deficit related to the amortization of debt issuance costs that were historically allocated to equity. Refer to Note 3, “Recent Accounting Pronouncements,” for additional information. The initial conversion rate of the 2023 Notes is 52.8318 shares of the Company’s common stock per $1,000 principal amount of 2023 Notes (which is equivalent to an initial conversion price of approximately $18.93 per share). The conversion rate will be subject to adjustment upon the occurrence of certain specified events but will not be adjusted for accrued and unpaid interest. In addition, upon the occurrence of a make-whole fundamental change (as defined in the 2023 Indenture), the Company will, in certain circumstances, increase the conversion rate by a number of additional shares for a holder that elects to convert its 2023 Notes in connection with such make-whole fundamental change. Prior to the close of business on the business day immediately preceding November 1, 2022, the 2023 Notes will be convertible only under the following circumstances: (1) during any calendar quarter commencing after March 31, 2018, and only during such calendar quarter, if the last reported sale price of the common stock for at least 20 trading days (whether or not consecutive) in a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is more than 130% of the conversion price on each applicable trading day; (2) during the five five The Company may not redeem the 2023 Notes prior to the maturity date and no sinking fund is provided for the 2023 Notes. Upon the occurrence of a fundamental change (as defined in the 2023 Indenture) prior to the maturity date, holders may require the Company to repurchase all or a portion of the 2023 Notes for cash at a price equal to 100% of the principal amount of the 2023 Notes to be repurchased, plus any accrued and unpaid interest to, but excluding, the fundamental change repurchase date. The 2023 Notes are the Company’s senior unsecured obligations and will rank senior in right of payment to any of the Company’s indebtedness that is expressly subordinated in right of payment to the notes; equal in right of payment with the Company’s existing and future liabilities that are not so subordinated; effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the assets securing such indebtedness; and structurally junior to any existing and future indebtedness and other liabilities (including trade payables, but excluding intercompany obligations and liabilities) and any preferred stock of subsidiaries of the Company. The following events are considered “events of default” with respect to the 2023 Notes, which may result in the acceleration of the maturity of the 2023 Notes: (1) the Company defaults on the payment when due of any principal of any of the 2023 Notes at maturity or upon exercise of a repurchase right or otherwise; (2) the Company defaults on the payment of any interest, including additional interest, if any, on any of the 2023 Notes, when the interest becomes due and payable, and continuance of such default for a period of 30 days; (3) failure by the Company to comply with its obligation to convert the 2023 Notes in accordance with the 2023 Indenture upon exercise of a holder’s conversion right; (4) failure by the Company to give a fundamental change notice or notice of a specified corporate transaction when due with respect to the Notes; (5) failure by the Company to comply with any of its other agreements contained in the 2023 Notes or the 2023 Indenture for a period of 60 days after written notice from the Trustee or the holders of at least 25% in aggregate principal amount of the Notes then outstanding has been received; (6) failure by the Company to pay when due the principal of, or acceleration of, any indebtedness for money borrowed by the Company or any of its Material Subsidiaries (as defined in the 2023 Indenture) in excess of $40.0 million principal amount, if such indebtedness is not discharged, or such acceleration is not annulled, for a period of 30 days after written notice to the Company by the Trustee or to the Company and the Trustee by holders of 25% or more in aggregate principal amount of the 2023 Notes then outstanding in accordance with the 2023 Indenture; and (7) certain events of bankruptcy, insolvency or reorganization of the Company or any of its Material Subsidiaries (as defined in the Indenture). If such an event of default, other than an event of default described in clause (7) above with respect to the Company, occurs and is continuing, the Trustee by written notice to the Company, or the holders of at least 25% in aggregate principal amount of the outstanding Notes by notice to the Company and the Trustee, may, and the Trustee at the request of such holders shall, declare 100% of the principal of and accrued and unpaid interest, if any, on all the Notes then outstanding to be due and payable. If an event of default described in clause (7) above occurs, 100% of the principal of and accrued and unpaid interest on the Notes then outstanding will automatically become due and payable. On March 2, 2022, the Company entered into individual, privately negotiated transactions with certain holders of its outstanding 2023 Notes, pursuant to which the Company paid an aggregate of approximately $199.1 million in cash for the repurchase of approximately $123.1 million aggregate principal amount of its 2023 Notes (“Q1 2022 Partial Notes Repurchase”). The cash consideration was based on a volume-weighted average price of $29.6789 for the 19-trading day measurement period ending March 29, 2022. Of the $123.1 million aggregate principal amount, approximately $107.9 million was settled on March 31, 2022 for $174.5 million in cash. The remaining $15.2 million aggregate principal amount was settled on April 1, 2022 for $24.6 million in cash. In addition, this transaction resulted in a loss on extinguishment of debt of $66.5 million and a loss on fair value adjustment of derivatives, net of $8.3 million. On August 11, 2022, the Company entered into individual, privately negotiated transactions with certain holders of its outstanding 2023 Notes, pursuant to which the Company paid an aggregate of approximately $58.9 million in cash for the repurchase of approximately $39.0 million aggregate principal amount of its 2023 Notes (“Q3 2022 Partial Notes Repurchase”). The cash consideration was based on a volume-weighted average price of $27.8456 for the 10-trading day measurement period ending August 25, 2022. In addition, this transaction resulted in a loss on extinguishment of debt of $17.1 million and a loss on fair value adjustment of derivatives, net of $2.3 million. Upon entering into the Q1 2022 and Q3 2022 Partial Notes Repurchase agreements, the conversion feature related to the 2023 Notes repurchased, as well as the settlements of the convertible senior note hedges and warrants, were subject to derivative accounting. As described in the preceding paragraphs above, the combination of these two transactions resulted in $10.6 million in losses on fair value adjustment of derivatives, net, for the year ended December 31, 2022. During the year ended December 31, 2022, no holders elected to convert their 2023 Notes which had met the trigger for early conversion as of December 31, 2021, March 31, 2022 and September 30, 2022, respectively. The early conversion had been met as of December 31, 2021, March 31, 2022 and September 30, 2022, as the last reported sale price of the Company’s common stock exceeded 130% of the conversion price of the 2023 Notes for more than 20 trading days during the 30 consecutive trading days ended December 31, 2021, March 31, 2022 and September 30, 2022, respectively. Since November 1, 2022, the remaining outstanding 2023 Notes were convertible at the option of the holders and continue to be convertible until the close of business on the second scheduled trading day immediately preceding the maturity date, and holders of the 2023 Notes may convert all or a portion of their 2023 Notes regardless of the foregoing conditions. Note Hedges and Warrants. On November 14, 2017 and November 16, 2017, in connection with the 2023 Notes, the Company entered into privately negotiated convertible note hedge transactions (the “Convertible Note Hedge Transactions”) with respect to the Company’s common stock, par value $0.001 per share (the “Common Stock”), with certain bank counterparties (the “Counterparties”). The Company paid an aggregate amount of approximately $33.5 million to the Counterparties for the Convertible Note Hedge Transactions. The Convertible Note Hedge Transactions cover, subject to anti-dilution adjustments substantially similar to those in the 2023 Notes, approximately 9.1 million shares of Common Stock, the same number of shares underlying the 2023 Notes, at a strike price that corresponds to the initial conversion price of the 2023 Notes, and are exercisable upon conversion of the 2023 Notes. The Convertible Note Hedge Transactions will expire upon the maturity of the 2023 Notes. The Convertible Note Hedge Transactions are intended to reduce the potential economic dilution upon conversion of the 2023 Notes. The Convertible Note Hedge Transactions are separate transactions and are not part of the terms of the 2023 Notes. Holders of the 2023 Notes will not have any rights with respect to the Convertible Note Hedge Transactions. In addition, concurrently with entering into the Convertible Note Hedge Transactions, the Company separately entered into privately negotiated warrant transactions, whereby the Company sold to the Counterparties warrants (the “Warrants”) to acquire, collectively, subject to anti-dilution adjustments, approximately 9.1 million shares of the Common Stock at an initial strike price of approximately $23.30 per share, which represents a premium of 60% over the last reported sale price of the Common Stock of $14.56 on November 14, 2017. The Company received aggregate proceeds of approximately $23.2 million from the sale of the Warrants to the Counterparties. The Warrants are separate transactions and are not part of the 2023 Notes or Convertible Note Hedge Transactions. Holders of the 2023 Notes and Convertible Note Hedge Transactions will not have any rights with respect to the Warrants. The amounts paid and received for the Convertible Note Hedge Transactions and Warrants have been recorded in additional paid-in capital on the consolidated balance sheets. The fair value of the Convertible Note Hedge Transactions and Warrants are not re-measured through earnings each reporting period. The amounts paid for the Convertible Note Hedge Transactions are tax deductible expenses, while the proceeds received from the Warrants are not taxable. In connection with the Q1 2022 Partial Notes Repurchase, the Company entered into agreements with certain financial institutions to retire the corresponding portions of convertible senior note hedges and warrants the Company had previously entered into with the counterparties in connection with the issuance of the 2023 Notes. Upon settlement, the Company received $72.4 million in cash for the retirement of the proportionate amount of convertible senior note hedges and paid $55.1 million in cash for the retirement of the proportionate amount of warrants during the three months ended March 31, 2022. In connection with the Q3 2022 Partial Notes Repurchase, the Company entered into agreements with certain financial institutions to retire the corresponding portions of convertible senior note hedges and warrants the Company had previously entered into with the counterparties in connection with the issuance of the 2023 Notes. Upon settlement, the Company received $19.3 million in cash for the retirement of the proportionate amount of convertible senior note hedges and paid $14.4 million in cash for the retirement of the proportionate amount of warrants during the three months ended September 30, 2022. Impact to Earnings per Share. During the year ended December 31, 2021, the Company’s stock price exceeded the 2023 Notes’ conversion price of $18.93 per share, therefore approximately 1.4 million shares were included in the weighted-average dilutive shares. As a result of the Company’s adoption of ASU No. 2020-06, the dilutive impact of the 2023 Notes on the calculation of diluted net income (loss) per share is considered using the if-converted method. Furthermore, because the principal amount of the 2023 Notes must be settled in cash, the dilutive impact of applying the if-converted method is limited to the in-the-money portion, if any, of the 2023 Notes. For periods prior to the Company’s January 1, 2022 adoption of ASU No. 2020-06, the Company applied the treasury stock method to account for the dilutive impact of the 2023 Notes for diluted net income (loss) per share purposes. As noted in ASU . 2020-06, for convertible instruments where the principal is required to be paid in cash, the results of applying the if-converted method are consistent with the results of applying the historical treasury stock method. Therefore, even though the Company is required to apply the if-converted method upon adoption of ASU No. 2020-06, there is no impact to its earnings per share calculation. Under the if-converted method, the cumulative dilutive effect of the 2023 Notes would be approximately 0.5 million shares if the average price of the Company’s Common Stock is $18.93. However, upon conversion, there will be no economic dilution from the 2023 Notes, as exercise of the Convertible Note Hedge Transactions eliminates any dilution from the 2023 Notes that would have otherwise occurred when the price of the Company’s Common Stock exceeds the conversion price. The Convertible Note Hedge Transactions are required to be excluded from the calculation of diluted earnings per share, as they would be anti-dilutive under the treasury stock method. The warrants will have a dilutive effect when the average share price exceeds the warrant’s strike price of $23.30 per share. However, upon conversion, the Convertible Note Hedge Transactions would neutralize the dilution from the 2023 Notes so that there would only be dilution from the warrants. Interest expense related to the convertible notes for the years ended December 31, 2022, 2021 and 2020 was as follows: Years Ended December 31, (In thousands) 2022 2021 2020 2023 Notes coupon interest at a rate of 1.375% $ 610 $ 2,372 $ 2,372 2023 Notes amortization of discount and debt issuance cost 194 7,656 7,243 Total interest expense on convertible notes $ 804 $ 10,028 $ 9,615

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies As of December 31, 2022, the Company’s material contractual obligations were as follows: (In thousands) Total 2023 2024 2025 2026 2027 Contractual obligations (1) (2) Other contractual obligations $ 3,800 $ 3,200 $ 600 $ — $ — $ — Software licenses (3) 42,929 18,394 16,452 8,083 — — Acquisition retention bonuses (4) 5,364 2,507 2,507 350 — — Convertible notes (5) 10,381 10,381 — — — — Interest payments related to convertible notes 71 71 — — — — Total $ 62,545 $ 34,553 $ 19,559 $ 8,433 $ — $ — ______________________________________ (1) The above table does not reflect possible payments in connection with unrecognized tax benefits of approximately $20.9 million including $19.6 million recorded as a reduction of long-term deferred tax assets and $1.3 million in long-term income taxes payable, as of December 31, 2022. As noted below in Note 18, “Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months, the Company cannot reasonably estimate the outcome at this time. (2) For the Company’s lease commitments as of December 31, 2022, refer to Note 10, “Leases.” (3) The Company has commitments with various software vendors for agreements generally having terms longer than one year. During the second and fourth quarters of 2022, the Company renewed certain software license agreements for engineering development tools, which are included in the table above. As of December 31, 2022, approximately $15.6 million of the fair value of the liability was included in other current liabilities and $22.2 million was included in other long-term liabilities, in the accompanying consolidated balance sheet. (4) In connection with the acquisition of Northwest Logic, Inc. (“Northwest Logic”) in the third quarter of 2019, the Secure Silicon IP and Protocols business from Verimatrix, formerly Inside Secure, in the fourth quarter of 2019, the acquisitions of AnalogX and PLDA in the third quarter of 2021, and the acquisition of Hardent in the second quarter of 2022, the Company is obligated to pay retention bonuses to certain employees subject to certain eligibility and acceleration provisions including the condition of employment. (5) On November 17, 2017, the Company entered into an Indenture with U.S. Bank National Association, as trustee, relating to the issuance by the Company of $172.5 million aggregate principal amount of the 2023 Notes. During the year ended December 31, 2022, the Company repurchased $162.1 million aggregate principal amount of its 2023 Notes. Refer to Note 12, “Convertible Notes,” for additional information. Indemnifications From time to time, the Company indemnifies certain customers as a necessary means of doing business. Indemnification covers customers for losses suffered or incurred by them as a result of any patent, copyright, or other IP infringement or any other claim by any third party arising as result of the applicable agreement with the Company. The Company generally attempts to limit the maximum amount of indemnification that the Company could be required to make under these agreements to the amount of fees received by the Company, however, this may not always be possible. The fair value of the liability as of December 31, 2022 and 2021, respectively, was not material.

Equity Incentive Plans and Stoc

Equity Incentive Plans and Stock-Based Compensation	12 Months Ended
Equity Incentive Plans and Stock-Based Compensation	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Equity Incentive Plans and Stock-Based Compensation	Equity Incentive Plans and Stock-Based Compensation Equity Incentive Plans The Company has three equity incentive plans under which grants are currently outstanding: the 2006 Equity Incentive Plan (the “2006 Plan”), the 2015 Equity Incentive Plan (the “2015 Plan”) and the 2019 Inducement Equity Incentive Plan (the “2019 Inducement Plan”). On April 23, 2015, the Company’s stockholders approved the 2015 Plan, which replaced the 2006 Plan. Additionally, in the third quarter of 2019, the Company adopted the 2019 Inducement Plan and, subject to the adjustment provisions of the 2019 Inducement Plan, reserved 400,000 shares of the Company’s common stock for issuance pursuant to equity awards granted under the 2019 Inducement Plan. The 2015 Plan and 2019 Inducement Plan were the Company’s only plans for providing stock-based incentive awards to eligible employees, executive officers, non-employee directors and consultants as of December 31, 2022. Grants under all plans typically have a requisite service period of 60 months or 48 months, have straight-line vesting schedules and expire not more than 10 years from date of grant. No further awards will be made under the 2006 Plan, but the 2006 Plan will continue to govern awards previously granted under it. In addition, any shares subject to stock options or other awards granted under the 2006 Plan that on or after the effective date of the 2015 Plan are forfeited, cancelled, exchanged or surrendered or terminate under the 2006 Plan will become available for grant under the 2015 Plan. The Board will periodically review actual share consumption under the 2015 Plan and may make a request for additional shares as needed. The 2019 Inducement Plan provides for the grant of equity-based awards, including nonstatutory stock options, restricted stock units, restricted stock, stock appreciation rights, performance shares and performance units, and its terms are substantially similar to the Company’s 2015 Plan. However, awards under the 2019 Inducement Plan may only be granted to individuals who previously have not been employees or non-employee directors of the Company (or who will become employed following a bona fide period of non-employment or service with the Company), as an inducement material to the individuals’ entry into employment with the Company, or, to the extent permitted by Rule 5635(c)(3) of the Nasdaq Listing Rules, in connection with a merger or acquisition. A summary of shares available for grant under the Company’s plans is as follows: Shares Available for Grant Total shares available for grant as of December 31, 2019 6,826,863 Increase in shares approved for issuance (1) 7,800,000 Stock options granted (40,000) Stock options forfeited 101,816 Nonvested equity stock and stock units granted (2) (3) (3,528,401) Nonvested equity stock and stock units forfeited (2) 1,252,042 Total shares available for grant as of December 31, 2020 12,412,320 Stock options forfeited 54,327 Nonvested equity stock and stock units granted (2) (4) (3,918,251) Nonvested equity stock and stock units forfeited (2) 1,943,782 Total shares available for grant as of December 31, 2021 10,492,178 Nonvested equity stock and stock units granted (2) (5) (4,107,633) Nonvested equity stock and stock units forfeited (2) 1,271,224 Total shares available for grant as of December 31, 2022 7,655,769 ______________________________________ (1) On April 30, 2020, the Company’s stockholders approved an additional 7,800,000 shares for issuance under the 2015 Plan. (2) For purposes of determining the number of shares available for grant under the 2015 Plan against the maximum number of shares authorized, each restricted stock granted reduces the number of shares available for grant by 1.5 shares and each restricted stock forfeited increases shares available for grant by 1.5 shares. (3) Amount includes approximately 0.5 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2020 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below. (4) Amount includes approximately 0.4 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2021 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below. (5) Amount includes approximately 0.6 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2022 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below. General Stock Option Information The following table summarizes stock option activity under the Company’s equity incentive plans for the years ended December 31, 2022, 2021 and 2020 and information regarding stock options outstanding, exercisable, and vested and expected to vest as of December 31, 2022: Options Outstanding Weighted-Average Remaining Contractual Term (years) (In thousands, except per share amounts and years) Number of Shares Weighted-Average Exercise Price Per Share Aggregate Intrinsic Value Outstanding as of December 31, 2019 1,639,146 $ 11.37 Options granted 40,000 $ 15.59 Options exercised (613,119) $ 10.74 Options forfeited (101,816) $ 19.41 Outstanding as of December 31, 2020 964,211 $ 11.08 Options exercised (360,303) $ 11.06 Options forfeited (54,327) $ 14.98 Outstanding as of December 31, 2021 549,581 $ 10.71 Options exercised (117,138) $ 7.43 Outstanding as of December 31, 2022 432,443 $ 11.60 3.8 $ 10,472 Vested or expected to vest at December 31, 2022 432,399 $ 11.60 3.8 $ 10,471 Options exercisable at December 31, 2022 415,776 $ 11.53 3.6 $ 10,097 Employee Stock Purchase Plan During the years ended December 31, 2022, 2021, and 2020, the Company had one employee stock purchase plan, the 2015 Employee Stock Purchase Plan (“2015 ESPP”). Employees generally will be eligible to participate in the plan if they are employed by the Company for more than 20 hours per week and more than five months in a fiscal year. The 2015 ESPP provides for six The Company issued 255,614 shares at a price of $20.60 p er share during the year ended December 31, 2022. The Company issued 384,087 shares at a price of $12.95 per share during the year ended December 31, 2021. The Company issued 467,065 shares at a price of $10.51 per share during the year ended December 31, 2020. On April 30, 2020, the Company's stockholders approved an additional 2,000,000 shares to be reserved for issuance under the 2015 ESPP. As of December 31, 2022, 2.6 million shares under the ESPP remained available for issuance. Stock-Based Compensation Stock Options There were no stock options granted during the years ended December 31, 2022 and 2021, respectively. During the year ended December 31, 2020, the number of stock options granted were not material. During the years ended December 31, 2022, 2021 and 2020, the Company recorded stock-based compensation related to stock options of $0.1 million, $0.4 million and $0.6 million, respectively. As of December 31, 2022, there was $0.1 million of total unrecognized compensation cost, net of expected forfeitures, related to unvested stock-based compensation arrangements granted under the stock option plans. This cost is expected to be recognized over a weighted-average period of 0.8 years . The total fair value of options vested f or the years ended December 31, 2022, 2021 and 2020 was $1.7 million, $2.0 million and $3.3 million, respectively. Employee Stock Purchase Plan During the years ended December 31, 2022, 2021 and 2020, the Company recorded stock-based compensation related to the 2015 ESPP of $1.7 million, $1.4 million and $1.5 million, respectively. As of December 31, 2022, there was $0.8 million of total unrecognized compensation cost related to stock-based compensation arrangements granted under the 2015 ESPP. That cost is expected to be recognized over four months. Valuation Assumptions The Company estimates the fair value of stock awards using the BSM model. The BSM model determines the fair value of stock-based compensation and is affected by the Company’s stock price on the date of the grant, as well as assumptions regarding a number of highly complex and subjective variables. These variables include expected volatility, expected life of the award, expected dividend rate, and expected risk-free rate of return. The assumptions for expected volatility and expected life are the two assumptions that significantly affect the grant-date fair value. If actual results differ significantly from these estimates, stock-based compensation expense and the Company’s results of operations could be materially impacted. The fair value of stock awards is estimated as of the grant date using the BSM option-pricing model assuming a dividend yield of 0% and the additional weighted-average assumptions as listed in the table below. The following table presents the weighted-average assumptions used to estimate the fair value of stock options granted that contain only service conditions in the periods presented: Stock Option Plan for Year Ended December 31, 2020 Stock Option Plan Expected stock price volatility 38% Risk free interest rate 0.2% Expected term (in years) 5.5 Weighted-average fair value of stock options granted $5.46 There were no stock options granted during the years ended December 31, 2022 and 2021, respectively. Employee Stock Purchase Plan for Years Ended December 31, 2022 2021 2020 Employee Stock Purchase Plan Expected stock price volatility 40%-44% 32%-33% 37%-46% Risk free interest rate 1.49%-4.58% 0.04%-0.05% 0.1% Expected term (in years) 0.5 0.5 0.5 Weighted-average fair value of purchase rights granted under the purchase plan $8.02 $5.17 $3.46 Expected Stock Price Volatility: Given the volume of market activity in its market traded options, the Company determined that it would use the implied volatility of its nearest-to-the-money traded options. The Company believes that the use of implied volatility is more reflective of market conditions and a better indicator of expected volatility than historical volatility. If there is not sufficient volume in its market traded options, the Company will use an equally weighted blend of historical and implied volatility. Risk-free Interest Rate: The Company bases the risk-free interest rate used in the BSM valuation method on implied yield currently available on the U.S. Treasury zero-coupon issues with an equivalent term. Where the expected terms of the Company’s stock-based awards do not correspond with the terms for which interest rates are quoted, the Company uses an approximation based on rates on the closest term currently available. Expected Term: The expected term of options granted represents the period of time that options granted are expected to be outstanding. The expected term was determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior. The expected term of ESPP grants is based upon the length of each respective purchase period. Nonvested Equity Stock and Stock Units The Company grants nonvested equity stock units to officers, employees and directors. For the years ended December 31, 2022, 2021 and 2020, the Company granted nonvested equity stock units totaling 2.3 million, 2.4 million and 2.0 million shares, respectively. These awards have a service condition, generally a service period of four years, except in the case of grants to directors, for which the service period is one year. For the years ended December 31, 2022, 2021 and 2020, the nonvested equity stock units were valued at the date of grant, giving them a fair value of approximately $65.6 million, $50.1 million and $31.0 million, respectively. During the years ended December 31, 2022, 2021 and 2020, the Company granted performance unit awards to certain Company executive officers with vesting subject to the achievement of certain performance and/or market conditions. The ultimate number of performance units that can be earned can range from 0% to 200% of target depending on performance relative to target over the applicable period. The shares earned will vest on the third anniversary of the date of grant. The Company’s shares available for grant have been reduced to reflect the shares that could be earned at the maximum target. For the years ended December 31, 2022, 2021 and 2020, the Company recorded stock-based compensation expense of approximately $33.8 million, $25.7 million and $23.7 million, respectively, related to all outstanding nonvested equity stock grants. Unrecognized compensation cost related to all nonvested equity stock grants, net of estimated forfeitures, was approximately $63.5 million at December 31, 2022. This amount is expected to be recognized over a weighted-average period of 2.1 years. The following table reflects the activity related to nonvested equity stock and stock units for the years ended December 31, 2022, 2021 and 2020: Nonvested Equity Stock and Stock Units Shares Weighted-Average Nonvested at December 31, 2019 5,289,483 $ 11.27 Granted 1,986,117 $ 15.60 Vested (1,693,659) $ 11.70 Forfeited (730,676) $ 11.83 Nonvested at December 31, 2020 4,851,265 $ 12.82 Granted 2,363,885 $ 21.18 Vested (1,524,950) $ 12.41 Forfeited (971,815) $ 15.30 Nonvested at December 31, 2021 4,718,385 $ 16.62 Granted 2,338,255 $ 28.10 Vested (1,853,260) $ 14.42 Forfeited (485,320) $ 20.48 Nonvested at December 31, 2022 4,718,060 $ 22.78

Stockholders' Equity

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Dec. 31, 2022
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders’ Equity Share Repurchase Programs On October 29, 2020, the Board approved a new share repurchase program authorizing the repurchase of up to an aggregate of 20.0 million shares (the “2020 Repurchase Program”). Share repurchases under the 2020 Repurchase Program may be made through the open market, established plans or privately negotiated transactions in accordance with all applicable securities laws, rules, and regulations. There is no expiration date applicable to the 2020 Repurchase Program. The 2020 Repurchase Program replaced the previous program approved by the Board in January 2015 and canceled the remaining shares outstanding as part of the previous authorization. During the years ended December 31, 2022 and 2021, the Company repurchased shares of its common stock under the 2020 Repurchase Program as discussed below. On November 11, 2020, the Company entered into an accelerated share repurchase program with Deutsche Bank AG, London Branch as counterparty, through its agent Deutsche Bank Securities Inc. (“Deutsche Bank”) (the “2020 ASR Program”). The 2020 ASR Program was part of the share repurchase program previously authorized by the Company’s Board on October 29, 2020. Under the 2020 ASR Program, the Company pre-paid to Deutsche Bank the $50.0 million purchase price for its common stock and, in turn, the Company received an initial delivery of approximately 2.6 million shares of its common stock from Deutsche Bank in the fourth quarter of 2020, which were retired and recorded as a $40.0 million reduction to stockholders’ equity. The remaining $10.0 million of the initial payment was recorded as a reduction to stockholders’ equity as an unsettled forward contract indexed to the Company’s stock. During the second quarter of 2021, the accelerated share repurchase program was completed and the Company received an additional 0.1 million shares of its common stock, which were retired, as the final settlement of the accelerated share repurchase program. On June 15, 2021, the Company entered into an accelerated share repurchase program with Deutsche Bank (the “2021 ASR Program”). The 2021 ASR Program was part of the share repurchase program previously authorized by the Board on October 29, 2020. Under the 2021 ASR Program, the Company pre-paid to Deutsche Bank the $100.0 million purchase price for its common stock and, in turn, the Company received an initial delivery of approximately 3.9 million shares of its common stock from Deutsche Bank in the second quarter of 2021, which were retired and recorded as a $80.0 million reduction to stockholders’ equity. The remaining $20.0 million of the initial payment was recorded as a reduction to stockholders’ equity as an unsettled forward contract indexed to the Company’s stock. During the fourth quarter of 2021, the accelerated share repurchase program was completed and the Company received an additional 0.4 million shares of its common stock, which were retired, as the final settlement of the accelerated share repurchase program. On September 9, 2022, the Company entered into an accelerated share repurchase program with Wells Fargo Bank, National Association (“Wells Fargo”) (the “2022 ASR Program”). The 2022 ASR Program was part of the share repurchase program previously authorized by the Board on October 29, 2020. Under the 2022 ASR Program, the Company pre-paid to Wells Fargo the $100.0 million purchase price for its common stock and, in turn, the Company received an initial delivery of approximately 3.1 million shares of its common stock from Wells Fargo in the third quarter of 2022, which were retired and recorded as a $80.0 million reduction to stockholders’ equity. The remaining $20.0 million of the initial payment was recorded as a reduction to stockholders’ equity as an unsettled forward contract indexed to the Company’s stock. During the fourth quarter of 2022, the accelerated share repurchase program was completed and the Company received an additional 0.1 million shares of its common stock, which were retired, as the final settlement of the accelerated share repurchase program. During the year ended December 31, 2022, there were no other repurchases of the Company’s common stock under the 2020 Repurchase Program. As of December 31, 2022, there remained an outstanding authorization to repurchase approximately 9.7 million shares of the Company’s outstanding common stock under the 2020 Repurchase Program. The Company records share repurchases as a reduction to stockholders’ equity. The Company records a portion of the purchase price of the repurchased shares as an increase to accumulated deficit when the price of the shares repurchased exceeds the average original proceeds per share received from the issuance of common stock in accordance with its accounting policy. During the years ended December 31, 2022 and 2021, the cumulative price of $90.1 million and $95.8 million, respectively, were recorded as increases to accumulated deficit.

Benefit Plans

Benefit Plans	12 Months Ended
Benefit Plans	Dec. 31, 2022
Retirement Benefits [Abstract]
Benefit Plans	Benefit PlansThe Company has a 401(k) Plan (the “401(k) Plan”) qualified under Section 401(k) of the Internal Revenue Code of 1986. Each eligible employee may elect to contribute up to 60% of the employee’s annual compensation to the 401(k) Plan, up to the Internal Revenue Service limit. The Company, at the discretion of its Board of Directors, may match employee contributions to the 401(k) Plan. The Company matches 50% of eligible employee’s contribution, up to the first 6% of an eligible employee’s qualified earnings. For the years ended December 31, 2022, 2021 and 2020, the Company made matching contributions totaling approximately $1.9 million, $1.8 million and $1.8 million, respectively.

Restructuring Charges

Restructuring Charges	12 Months Ended
Restructuring Charges	Dec. 31, 2022
Restructuring and Related Activities [Abstract]
Restructuring and Other Charges	Restructuring and Other Charges 2020 Restructuring Plan In November 2020, the Company initiated a restructuring program to reduce overall expenses to improve future profitability by reducing spending on research and development efforts and sales, general and administrative programs (the “2020 Restructuring Plan”). In connection with this restructuring program, the Company initiated a plan of termination resulting in a reduction of approximately 70 employees. During the years ended December 31, 2021 and 2020, the Company recorded charges of approximately $0.4 million and $3.3 million, respectively, related primarily to the reduction in workforce. The 2020 Restructuring Plan was completed in the second quarter of 2021.

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income (loss) before taxes consisted of the following: Years Ended December 31, (In thousands) 2022 2021 2020 Domestic $ (16,663) $ 19,244 $ (39,937) Foreign 8,838 4,042 3,398 $ (7,825) $ 23,286 $ (36,539) The provision for income taxes was comprised of: Years Ended December 31, (In thousands) 2022 2021 2020 Federal: Current $ 183 $ (112) $ (446) Deferred 2,479 2,042 2,018 State: Current (215) 214 657 Deferred 24 324 (1,589) Foreign: Current 5,828 3,328 3,097 Deferred (1,814) (844) 195 $ 6,485 $ 4,952 $ 3,932 The differences between the Company’s effective tax rate and the U.S. federal statutory regular tax rate were as follows: Years Ended December 31, 2022 2021 2020 U.S. federal statutory rate 21.0 % 21.0 % 21.0 % State income tax expense (benefit) 6.1 2.2 (2.5) Withholding tax (36.6) 4.4 (4.1) Foreign rate differential (28.3) 3.3 (4.8) Research and development credit 4.8 (7.1) (4.8) Executive compensation (49.0) 6.6 (1.8) Stock-based compensation 47.9 (7.7) 0.6 Foreign tax credit 57.4 (84.0) (89.5) Foreign-derived intangible income deduction 70.5 (55.8) 13.7 Divestiture — — (20.4) Acquisition (25.1) 8.8 — Debt extinguishment (226.7) — — Other (1.0) (0.2) 0.8 Valuation allowance 76.1 129.8 81.0 (82.9) % 21.3 % (10.8) % The components of the net deferred tax assets (liabilities) were as follows: As of December 31, (In thousands) 2022 2021 Deferred tax assets: Depreciation and amortization $ 3,247 $ 6,578 Lease liabilities 7,691 7,873 Other timing differences, accruals and reserves 10,393 5,747 Deferred equity compensation 4,366 5,077 Net operating loss carryovers 13,423 14,602 Capitalized research 49,649 22,301 Tax credits 96,758 130,348 Total gross deferred tax assets 185,527 192,526 Deferred tax liabilities: Lease right-of-use assets (5,501) (5,323) Deferred revenue (76) (267) Total gross deferred tax liabilities (5,577) (5,590) Total net deferred tax assets 179,950 186,936 Valuation allowance (201,883) (206,874) Net deferred tax liabilities $ (21,933) $ (19,938) As of December 31, (In thousands) 2022 2021 Reported as: Non-current deferred tax assets $ 3,031 $ 4,047 Non-current deferred tax liabilities (24,964) (23,985) Net deferred tax liabilities $ (21,933) $ (19,938) The Company periodically evaluates the realizability of its net deferred tax assets based on all available evidence, both positive and negative. During the third quarter of 2018, the Company assessed the changes in its underlying facts and circumstances and evaluated the realizability of its existing deferred tax assets based on all available evidence, both positive and negative, and the weight accorded to each, and concluded a full valuation allowance associated with U.S. federal and California deferred tax assets was appropriate. The Company continues to maintain a full valuation allowance on its California and U.S. federal deferred tax assets as it does not expect to be able to fully utilize them. The following table presents the tax valuation allowance information for the years ended December 31, 2022, 2021 and 2020: (In thousands) Balance at Beginning of Period Charged (Credited) to Operations Charged to Other Account* Valuation Allowance Release Balance at End of Period Tax Valuation Allowance Year ended December 31, 2020 $ 196,098 (21,294) 3 (688) $ 174,119 Year ended December 31, 2021 $ 174,119 32,544 211 — $ 206,874 Year ended December 31, 2022 $ 206,874 (7,233) 2,242 — $ 201,883 ______________________________________ * Amounts not charged to operations are charged to other comprehensive income or retained earnings. As of December 31, 2022, the Company had California and other state net operating loss carryforwards of $191.7 million and $0.8 million, respectively. As of December 31, 2022, the Company had federal research and development tax credit carryforwards of $41.8 million and foreign tax credits of $51.2 million. As of December 31, 2022, the Company had California research and development tax credit carryforwards of $25.6 million and California alternative minimum tax credit carryforwards of $0.3 million. The federal foreign tax credits and research and development credits begin to expire in 2023. Approximately $10.8 million of federal foreign tax credits will expire in 2023. The California net operating losses begin to expire in 2024. The California research and development credits carry forward indefinitely. In the event of a change in ownership, as defined under federal and state tax laws, the Company’s net operating loss and tax credit carryforwards could be subject to annual limitations. The annual limitations could result in the expiration of the net operating loss and tax credit carryforwards prior to utilization. As of December 31, 2022, the Company had $164.5 million of unrecognized tax benefits including $19.6 million recorded as a reduction of long-term deferred tax assets, $143.6 million recorded as a reduction of other assets associated with refundable withholding taxes previously withheld from licensees in South Korea, and $1.3 million recorded to long-term income taxes payable. As a result of recent court rulings in South Korea, the Company has determined that they may be entitled to refund claims for foreign taxes previously withheld from licensees in South Korea. The Company recognizes that there are numerous risks and uncertainties associated with the ultimate collection of this refund and has therefore established an offsetting reserve for the entire amount of potentially refundable withholding taxes previously withheld in South Korea. If recognized, $144.9 million would be recorded as an income tax benefit on the consolidated statement of operations. As of December 31, 2021, the Company had $146.2 million of unrecognized tax benefits including $18.9 million recorded as a reduction of long-term deferred tax assets, $126.1 million recorded as a reduction of other assets associated with refundable withholding taxes previously withheld from licensees in South Korea, and $1.3 million recorded to long term income taxes payable. A reconciliation of the beginning and ending amounts of unrecognized income tax benefits for the years ended December 31, 2022, 2021 and 2020 was as follows: Years Ended December 31, (In thousands) 2022 2021 2020 Balance as of January 1 $ 146,215 $ 134,044 $ 115,653 Tax positions related to current year: Additions 18,515 18,748 18,600 Tax positions related to prior years: Additions — 615 — Reductions (199) (1,586) (209) Settlements — (5,606) — Balance as of December 31 $ 164,531 $ 146,215 $ 134,044 The Company recognizes interest and penalties related to uncertain tax positions as a component of the income tax provision (benefit). At December 31, 2022 and 2021, an immaterial amount of interest and penalties is included in long-term income taxes payable. Rambus files income tax returns for the U.S., California, India and various other state and foreign jurisdictions. The U.S. federal returns are subject to examination from 2016 and forward. The California returns are subject to examination from 2017 and forward. In addition, any research and development credit carryforward or net operating loss carryforward generated in prior years and utilized in these or future years may also be subject to examination. The Company settled its 2010, 2016 and 2018 audits with the California Franchise Tax Board in 2021, agreeing to the immaterial adjustments proposed. The India returns are under examination by the Indian tax administration for tax years beginning with 2011, except for 2012 through 2014, which were assessed in the Company’s favor, and are subject to examination from 2015 and forward. These examinations may result in proposed adjustments to the income taxes as filed during these periods. Management regularly assesses the likelihood of outcomes resulting from income tax examinations to determine the adequacy of their provision for income taxes and believes their provision for unrecognized tax benefits is adequate. At December 31, 2022, no other income taxes (state or foreign) have been provided on undistributed earnings of approximately $32.3 million from the Company’s international subsidiaries since these earnings have been, and under current plans will continue to be, indefinitely reinvested outside the United States. However, if such earnings were distributed, the Company would incur approximately $2.4 million of foreign withholding taxes and an immaterial amount of U.S. taxes.

Litigation and Asserted Claims

Litigation and Asserted Claims	12 Months Ended
Litigation and Asserted Claims	Dec. 31, 2022
Litigation And Asserted Claims Disclosure [Abstract]
Litigation and Asserted Claims	Litigation and Asserted Claims Rambus is not currently a party to any material pending legal proceeding; however, from time to time, Rambus may become involved in legal proceedings or be subject to claims arising in the ordinary course of its business. Although the results of litigation and claims cannot be predicted with certainty, the Company currently believes that the final outcome of these ordinary course matters will not have a material adverse effect on our business, operating results, financial position or cash flows. Regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management attention and resources and other factors. The Company records a contingent liability when it is probable that a loss has been incurred and the amount is reasonably estimable in accordance with accounting for contingencies.

Acquisitions (Notes)

Acquisitions (Notes)	12 Months Ended
Acquisitions (Notes)	Dec. 31, 2022
Business Combinations [Abstract]
Acquisitions	Acquisitions 2022 Acquisition Hardent, Inc. On May 20, 2022, (the “Closing Date”), the Company completed its acquisition of Hardent, a leading electronic design company, by acquiring all of its outstanding shares. The Company acquired Hardent for a total consideration of approximately $16.1 million, which consisted of $14.7 million in initial cash consideration paid at the Closing Date, $1.2 million was deposited into an escrow account to fund indemnification obligations to be released within 18 months after the Closing Date, and $0.2 million was deposited into an escrow account to fund other contractual provisions related to certain working capital adjustments. The addition of the technology and expertise from Hardent augments the Company’s CXL memory interconnect initiative. As part of the acquisition, the Company agreed to pay certain Hardent employees approximately $1.2 million in cash over three years following the Closing Date (the “Retention Bonus”), to be paid in three equal installments on each of the dates that are 12 months, 24 months and 36 months following the Closing Date. The Retention Bonus payouts are subject to the condition of continued employment. Therefore, the Retention Bonus payouts will be treated as compensation and will be expensed ratably over the retention period. As of December 31, 2022, the Company had incurred approximately $1.2 million in external acquisition costs in connection with the transaction, which were expensed as incurred. The purchase price allocation and related accounting for this acquisition is preliminary. The preliminary fair value estimates for the assets acquired and liabilities assumed were based upon preliminary calculations and valuations and the Company’s estimates and assumptions for the acquisition are subject to change if the Company obtains additional information during the measurement period. The fair value of the intangible assets acquired was determined by management primarily by using the multi-period excess earnings method under the income approach. This method reflects the present value of the projected cash flows that are expected to be generated by the existing technologies less charges representing the contribution of other assets to those cash flows. The fair values of the remaining assets acquired and liabilities assumed approximated their carrying values at the Closing Date. The Company performed a valuation of the net assets acquired as of the Closing Date. The total consideration from the acquisition was allocated as of the Closing Date, and reflects adjustments made during the measurement period, as described in Note 6, “Intangible Assets and Goodwill,” to finalize the purchase price accounting, as follows: (In thousands) Total Cash and cash equivalents $ 209 Accounts receivable 1,088 Unbilled receivables 239 Prepaid expenses and other current assets 16 Identified intangible assets 5,000 Goodwill 12,069 Accounts payable (55) Deferred revenue (578) Income taxes payable (466) Deferred tax liability (1,325) Other current liabilities (56) Total $ 16,141 The goodwill arising from the acquisition is primarily attributed to synergies related to the combination of new and complementary technologies of the Company and the assembled workforce of the acquired business. This goodwill is not expected to be deductible for tax purposes. The identified intangible assets assumed in the acquisition of Hardent were recognized as follows based upon their estimated fair values as of the acquisition date: Total Estimated Weighted-Average Useful Life (in thousands) (in years) Existing technology $ 4,800 5 years Customer contracts and contractual relationships 200 2 years Total $ 5,000 Unaudited Pro Forma Combined Consolidated Financial Information The following pro forma financial information presents the combined results of operations for the Company and Hardent as if the acquisition had occurred on January 1, 2021. The pro forma financial information has been prepared for comparative purposes only and does not purport to be indicative of the actual operating results that would have been recorded had the acquisition actually taken place on January 1, 2021, and should not be taken as indicative of future consolidated operating results. Additionally, the pro forma financial results do not include any anticipated synergies or other expected benefits from the acquisition: Years Ended December 31, (In thousands) 2022 2021 (unaudited) Total revenue $ 457,852 $ 336,258 Net income (loss) $ (13,251) $ 19,452 The pro forma net loss for 2022 was adjusted to exclude $1.2 million of acquisition-related costs incurred during the year ended December 31, 2022. Consequently, the pro forma net income for 2021 was adjusted to include these costs. 2021 Acquisitions AnalogX Inc. On July 2, 2021 (the “AnalogX Closing Date”), the Company completed its acquisition of AnalogX, a premier interconnect IP company, by acquiring all of its outstanding shares. The Company acquired AnalogX for total consideration of approximately $47.5 million, including certain adjustments for working capital, which consisted of $40.4 million in initial cash consideration at the AnalogX Closing Date and additional deferred payments totaling approximately $7.4 million, initially recorded at its present value of approximately $7.1 million, (the “Deferred Payments”). The Deferred Payments will be paid in cash over three years following the AnalogX Closing Date, in three installments on each of the dates that are 12 months, 24 months and 36 months following the AnalogX Closing Date. A portion of the purchase price, $5.9 million of the consideration, was deposited into an escrow account to fund indemnification obligations and other contractual provisions, to be released 12 months after the AnalogX Closing Date. The addition of the technology and expertise from AnalogX augments the Company’s SerDes offerings and CXL memory interconnect initiative. As part of the acquisition, the Company agreed to pay certain AnalogX employees $3.5 million in cash over three years following the AnalogX Closing Date (the “AnalogX Retention Bonus”), to be paid in three equal installments on each of the dates that are 12 months, 24 months and 36 months following the AnalogX Closing Date. The AnalogX Retention Bonus payouts are subject to the condition of continued employment. Therefore, the AnalogX Retention Bonus payouts will be treated as compensation and will be expensed ratably over the retention period. As of December 31, 2021, the Company had incurred approximately $0.8 million in external acquisition costs in connection with the transaction, which were expensed as incurred. The fair value of the intangible assets acquired was determined by management primarily by using the estimated current replacement cost under the cost approach. The fair values of the remaining assets acquired and liabilities assumed approximated their carrying values at the AnalogX Closing Date. The Company performed a valuation of the net assets acquired as of the AnalogX Closing Date. The total consideration from the business combination was allocated as of the Closing Date, and reflects adjustments made through the measurement period, as described in Note 6, “Intangible Assets and Goodwill,” to finalize the purchase price accounting, as follows: (In thousands) Total Cash and cash equivalents $ 2,763 Accounts receivable 280 Unbilled receivables 1,566 Prepaid expenses and other current assets 1,354 Identified intangible assets 6,800 IPR&D 3,800 Goodwill 39,309 Property, plant and equipment, net 118 Accounts payable (1,112) Deferred revenue (23) Income taxes payable (7,127) Other current liabilities (215) Total $ 47,513 The goodwill arising from the acquisition is primarily attributed to synergies related to the combination of new and complementary technologies of the Company and the assembled workforce of the acquired business. Approximately $26.9 million of the goodwill is expected to be deductible for tax purposes. The identified intangible assets assumed in the acquisition of AnalogX were recognized as follows based upon their estimated fair values as of the acquisition date: Total Estimated Weighted-Average Useful Life (in thousands) (in years) Existing technology $ 6,300 5 years Customer contracts and contractual relationships 500 2 years IPR&D 3,800 Not applicable Total $ 10,600 IPR&D consists of multiple projects relating to the development of various high-speed SerDes technologies. The projects are expected to be completed within the next three years. The acquired IPR&D will not be amortized until completion of the related products, which is determined by when the underlying project reaches technological feasibility and commences commercial production. Upon completion, the IPR&D projects will be amortized over their useful lives, which are expected to range between three years and five years. PLDA Group On June 16, 2021, the Company announced that it had entered into an agreement to acquire PLDA, a provider of high-speed interconnect solutions. On August 18, 2021 (the “PLDA Closing Date”), the Company completed its acquisition of PLDA by acquiring all of its outstanding shares. Under the terms of the Share Purchase Agreement, the total consideration of approximately $85.6 million is comprised of $67.1 million in closing cash consideration, 0.3 million shares of the Company’s common stock (valued based on the Company’s closing stock price at the PLDA Closing Date, which amounted to approximately $6.9 million) and up to an additional $21.0 million to be paid in shares of common stock, currently valued at $16.9 million (the “fair value of the earn-out liability”), subject to certain revenue targets of the acquired business for the next three years. The fair value of the earn-out liability will be remeasured each quarter, depending on the acquired business’s revenue performance relative to target over the applicable period. The Company has classified its liability for the contingent earn-out consideration related to the PLDA acquisition within Level 3 of the fair value hierarchy because the fair value is determined using significant unobservable inputs. A portion of the purchase price, $10.0 million of the consideration, was deposited into an escrow account to fund indemnification obligations and other contractual provisions, to be released 24 months after the PLDA Closing Date. The addition of the technology and expertise from PLDA augments the Company’s digital controller IP and CXL memory interconnect initiative. As part of the acquisition, the Company agreed to pay certain PLDA employees $3.0 million in cash over three years following the PLDA Closing Date (the “PLDA Retention Bonus”), to be paid in three equal installments on each of the dates that are 12 months, 24 months and 36 months following the PLDA Closing Date. The PLDA Retention Bonus payouts are subject to the condition of continued employment. Therefore, the PLDA Retention Bonus payouts will be treated as compensation and will be expensed ratably over the retention period. As of December 31, 2021, the Company had incurred approximately $1.4 million in external acquisition costs in connection with the transaction, which were expensed as incurred. The fair value of the intangible assets acquired was determined by management primarily by using the multi-period excess earnings method under the income approach. This method reflects the present value of the projected cash flows that are expected to be generated by the existing technologies less charges representing the contribution of other assets to those cash flows. The fair values of the remaining assets acquired and liabilities assumed approximated their carrying values at the PLDA Closing Date. The Company performed a valuation of the net assets acquired as of the PLDA Closing Date. The total consideration from the business combination was allocated as of the Closing Date as follows: (In thousands) Total Cash and cash equivalents $ 5,820 Accounts receivable 2,233 Inventories 125 Prepaid expenses and other current assets 836 Identified intangible assets 21,400 IPR&D 7,400 Goodwill 57,543 Property, plant and equipment, net 679 Operating lease right-of-use asset 864 Other assets 339 Accounts payable (1,046) Accrued salaries and benefits (814) Deferred revenue (514) Income taxes payable (118) Operating lease liability (852) Deferred tax liability (8,180) Other current liabilities (74) Total $ 85,641 The goodwill arising from the acquisition is primarily attributed to synergies related to the combination of new and complementary technologies of the Company and the assembled workforce of the acquired business. This goodwill is not expected to be deductible for tax purposes. The identified intangible assets assumed in the acquisition of PLDA were recognized as follows based upon their estimated fair values as of the acquisition date: Total Estimated Weighted-Average Useful Life (in thousands) (in years) Existing technology $ 20,400 3 to 5 years Customer contracts and contractual relationships 1,000 2 years IPR&D 7,400 Not applicable Total $ 28,800 IPR&D consists of multiple projects relating to the development of PLDA’s PCIe Gen 6 and CXL 3.0 technologies. The projects are expected to be completed within the next 24 months. The acquired IPR&D will not be amortized until completion of the related products which are determined by when the underlying project reaches technological feasibility and commences commercial production. Upon completion, the IPR&D projects will be amortized over their respective useful life, which are expected to range between three years and five years. Unaudited Pro Forma Combined Consolidated Financial Information The following pro forma financial information presents the combined results of operations for the Company and AnalogX and PLDA as if the acquisitions had occurred on January 1, 2020. The pro forma financial information has been prepared for comparative purposes only and does not purport to be indicative of the actual operating results that would have been recorded had the acquisitions actually taken place on January 1, 2020, and should not be taken as indicative of future consolidated operating results. Additionally, the pro forma financial results do not include any anticipated synergies or other expected benefits from the acquisitions: For the Years Ended December 31, (In thousands) 2021 2020 (unaudited) Total revenue $ 338,961 $ 267,006 Net income (loss) $ 16,533 $ (33,871) The pro forma net income for 2021 was adjusted to exclude $2.2 million of acquisition-related costs incurred in 2021. Consequently, the pro forma net loss for 2020 was adjusted to include these costs.

Subsequent Event

Subsequent Event	12 Months Ended
Subsequent Event	Dec. 31, 2022
Subsequent Events [Abstract]
Subsequent Event	Subsequent EventDuring the first quarter of 2023, the Company paid upon maturity the remaining $10.4 million in aggregate principal amount of the 2023 Notes. Additionally, the Company delivered approximately 0.3 million shares of the Company's common stock as settlement related to the in-the-money conversion feature of the 2023 Notes at maturity, and received an equal amount of shares due to the exercise of the related Convertible Note Hedge Transactions.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2022
Accounting Policies [Abstract]
Financial Statement Presentation	Financial Statement Presentation The accompanying consolidated financial statements include the accounts of Rambus and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated on the accompanying consolidated financial statements. Investments in entities with more than 20% ownership by Rambus and in which Rambus has the ability to significantly influence the operations of the investee (but not control) are accounted for using the equity method and are included in other assets.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.
Reclassifications	Reclassifications Certain prior-year balances were reclassified to conform to the current year’s presentation. None of these reclassifications had an impact on reported net income (loss) or cash flows for any of the periods presented.
Revenue Recognition	Revenue Recognition The Company recognizes revenue upon transfer of control of promised goods and services in an amount that reflects the consideration it expects to receive in exchange for those goods and services. Goods and services that are distinct are accounted for as separate performance obligations. Where an arrangement includes multiple performance obligations, the transaction price is allocated to these on a relative standalone selling price basis. The Company has established standalone selling prices for all of its distinct offerings - specifically, the same pricing methodology is consistently applied to all licensing arrangements; all services offerings are priced within tightly controlled bands and all contracts that include support and maintenance state a renewal rate or price that is systematically enforced. The Company’s revenue consists of product, royalty and contract and other revenue. Products primarily consist of memory interface chips sold directly and indirectly to module manufacturers and OEMs worldwide through multiple channels, including its direct sales force and distributors. Royalty revenue consists of patent and technology license royalties. Contract and other revenue consists of software license fees, engineering fees associated with integration of the Company’s technology solutions into its customers’ products and support and maintenance fees. Product Revenue Product revenue is recognized upon shipment of product to customers, net of accruals for estimated sales returns and allowances, and to distributors, net of accruals for price protection and rights of return on products unsold by the distributors. To date, none of these accruals have been material. The Company transacts with direct customers primarily pursuant to standard purchase orders for delivery of products and generally allows customers to cancel or change purchase orders within limited notice periods prior to the scheduled shipment date. Royalty Revenue Rambus’ patent and technology licensing arrangements generally range between one year and ten years in duration and generally grant the licensee the right to use the Company’s entire IP portfolio as it evolves over time. These arrangements do not typically grant the licensee the right to terminate for convenience and where such rights exist, termination is prospective, with no refund of fees already paid or cancellation of fees already incurred by the licensee. There is no interdependency or interrelation between the IP included in the portfolio licensed upon contract inception and any IP subsequently made available to the licensee, and the Company would be able to fulfill its promises by transferring the portfolio and the additional IP use rights independently. However, the numbers of additions to, and removals from the portfolio (for example when a patent expires and renewal is not granted to the Company) in any given period have historically been relatively consistent; as such, the Company does not allocate the transaction price between the rights granted at contract inception and those subsequently granted over time as a function of these additions. Patent and technology licensing arrangements result in fixed payments received over time, with guaranteed minimum payments on occasion, variable payments calculated based on the licensee’s sale or use of the IP, or a mix of fixed and variable payments. • For fixed-fee arrangements (including arrangements that include minimum guaranteed amounts), the Company recognizes revenue upon control over the underlying IP use right transferring to the licensee, net of the effect of significant financing components calculated using customer-specific, risk-adjusted lending rates ranging between 5% and 10%, with the related interest income recognized over time on an effective rate basis. Where a licensee has the contractual right to terminate a fixed-fee arrangement for convenience without any substantive penalty payable upon such termination, the Company applies the guidance in Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers in Accounting Standards Codification (“ASC”) Topic 606 (“ASC 606”) to the duration of the contract in which the parties have present enforceable rights and obligations and only recognizes revenue for amounts that are due and payable. • For variable arrangements, the Company recognizes revenue based on an estimate of the licensee’s sale or usage of the IP during the period of reference, typically quarterly, with a true-up recorded, if required, when the Company receives the actual royalty report from the licensee. • The Company recognizes license renewal revenue at the beginning of the renewal period. Contract and Other Revenue Contract and other revenue consists of software license fees and engineering fees associated with integration of the Company’s technology solutions into its customers’ products, and support and maintenance. An initial software arrangement generally consists of a term-based or perpetual license, significant software customization services and support and maintenance services that include post-implementation customer support and the right to unspecified software updates and enhancements on a when and if available basis. The Company recognizes license and customization services revenue at a point in time when final delivery is made or based on an over time model, depending on the nature and amount of customization. For the over time model, the Company recognizes revenue over time by measuring the progress toward complete satisfaction of that performance obligation. The Company measures progress using an input method. License and customization services revenue recognized over time, which is reported as part of contract and other revenue, was approximately $5.0 million for the year ended December 31, 2022. Due to the nature of the work performed in these arrangements, the estimation of the over time model is complex and involves significant judgment. The key factor reviewed by management to estimate costs to complete each contract is the estimated man-months necessary to complete the project. The Company recognizes support and maintenance revenue over time. Significant Judgments Historically, no significant judgment has generally been required in determining the amount and timing of revenue from the Company’s contracts with customers, except for the following: • There is significant judgment by management in determining the estimated man-months necessary for completing development and customization services. The Company has adequate tools and controls in place, and substantial experience and expertise in timely and accurately tracking man-months incurred in completing customization and other professional services, and quantifying significant changes in estimates. Key estimates used in recognizing revenue predominantly consist of the following: • For contract revenue where the Company recognizes revenue over time, the key factor reviewed by management to estimate costs to complete each contract is the estimated man-months necessary to complete the project. • For fixed-fee arrangements in which cash is being received over a period exceeding a year, the Company calculates a customer-specific lending rate using a Daily Treasury Yield Curve Rate that changes depending on the date on which the licensing arrangement was entered into and the term (in years) of the arrangement, and takes into consideration a licensee-specific risk profile determined based on a review of the licensee’s “Full Company View” Dun & Bradstreet report obtained on the date the licensing arrangement was signed by the parties, with a risk premium being added to the Daily Treasury Yield Curve Rate considering the overall business risk, financing strength and risk indicators, as listed. • The Company recognizes revenue on variable fee licensing arrangements on the basis of sales and usage which the Company is required to estimate prior to receiving the final related reports from its customers. Contract Balances Timing of revenue recognition may differ from the timing of invoicing to the Company’s customers. The Company records contract assets when revenue is recognized prior to invoicing, and a contract liability when revenue is recognized subsequent to invoicing. The contract assets are transferred to receivables when the billing occurs.
Cost of Revenue	Cost of Revenue Cost of revenue includes cost of professional services, materials, including cost of wafers processed by third-party foundries, cost associated with packaging and assembly, test and shipping, cost of personnel, including stock-based compensation, and equipment associated with manufacturing support, logistics and quality assurance, warranty cost, amortization of existing technology, write-down of inventories, amortization of production mask costs, overhead and an allocated portion of occupancy costs.
Leases	Leases The Company leases office space, domestically and internationally, under operating leases. The Company’s leases have remaining lease terms generally between one year and eight years. Operating leases are included in operating lease right-of-use (“ROU”) assets, operating lease liabilities, and long-term operating lease liabilities on the Company’s consolidated balance sheets. The Company does not have any finance leases. The Company determines if an arrangement is a lease, or contains a lease, at inception. The Company assesses all relevant facts and circumstances in making the determination of the existence of a lease. For leases with terms greater than 12 months, the Company records the related asset and obligation at the present value of lease payments over the term. The Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments, and uses the implicit rate when readily determinable. Many of the Company’s leases include rental escalation clauses, renewal options and/or termination options that are factored into the determination of lease payments when appropriate. Leases with an initial term of 12 months or less are not recorded on the balance sheet, and the Company does not separate non-lease components from lease components. Operating lease costs are included in research and development and selling, general and administrative costs on the statement of operations.
Goodwill and Intangible Assets	Goodwill Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business combination. Goodwill is not subject to amortization, but is subject to at least an annual assessment for impairment. The Company performs its impairment analysis of goodwill on an annual basis during the fourth quarter of the year unless conditions arise that warrant a more frequent evaluation. When goodwill is assessed for impairment, the Company has the option to perform an assessment of qualitative factors of impairment (optional assessment) prior to necessitating a quantitative impairment test. Should the optional assessment be used for any given year, qualitative factors to consider for a reporting unit include: cost factors; financial performance; legal, regulatory, contractual, political, business, or other factors; entity specific factors; industry and market considerations; macroeconomic conditions; and other relevant events and factors affecting the reporting unit. If the Company determines in the qualitative assessment that it is more likely than not that the fair value of the reporting unit is less than its carrying value, a quantitative test is then performed. Otherwise, no further testing is required. For a reporting unit tested using a quantitative approach, the Company compares the fair value of the reporting unit with the carrying amount of the reporting unit, including goodwill. The fair value of the reporting unit is estimated using an income approach. Under the income approach, the Company measures fair value of the reporting unit based on a projected cash flow method using a discount rate determined by its management which is commensurate with the risk inherent in its current business model. The Company’s discounted cash flow projections are based on its annual financial forecasts developed internally by management for use in managing its business. If the fair value of the reporting unit exceeds its carrying value, goodwill is not impaired and no further testing is required. If the fair value of the reporting unit is less than the carrying value, then the amount of goodwill impairment will be the amount by which the reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The Company performed its annual goodwill impairment analysis as of December 31, 2022 and determined that there was no impairment of its goodwill. For the years ended December 31, 2021 and 2020, the Company did not recognize any goodwill impairment charges. Intangible Assets Intangible assets are comprised of existing technology, customer contracts and contractual relationships, and other definite-lived and indefinite-lived intangible assets. Identifiable intangible assets resulting from the acquisitions of entities accounted for using the purchase method of accounting are estimated by management based on the fair value of assets received. Identifiable definite-lived intangible assets are being amortized over the period of estimated benefit using the straight-line method and estimated useful lives ranging from six months to ten Acquired indefinite-lived intangible assets related to the Company’s in-process research and development (“IPR&D”) are capitalized and subject to impairment testing until completion or abandonment of the projects. Upon successful completion of each project, the Company makes a separate determination of the useful life of the acquired indefinite-lived intangible assets and the related amortization is recorded as an expense over the estimated useful life of the specific projects. Indefinite-lived intangible assets are subject to at least an annual assessment for impairment, applying a fair-value based test. The Company first performs a qualitative assessment to determine whether it is more likely than not (more than 50 percent likelihood) that the indefinite-lived intangible assets are impaired. If after assessing the totality of events and circumstances and their potential effect on significant inputs to the fair value determination, the Company determines that it is more likely than not that the indefinite-lived intangible assets are impaired, then the Company performs a quantitative impairment test by comparing the fair value of the intangible assets with its carrying amount. The Company measures fair value of the indefinite-lived intangible assets under the income approach based on a projected cash flow method using a discount rate determined by its management which is commensurate with the risk inherent in its current business model. The Company’s discounted cash flow projections are based on its annual financial forecasts developed internally by management for use in managing its business. If the fair value of the indefinite-lived intangible assets exceeds its carrying value, the indefinite-lived intangible assets are not impaired and no further testing is required. If the implied fair value of the indefinite-lived intangible assets is less than the carrying value, the difference is recorded as an impairment loss.
Inventories	Inventories Inventories are stated at the lower of cost or net realizable value. Cost is computed using standard cost, which approximates actual cost, on a first-in, first-out basis. Inventories are reduced for write-downs based on periodic reviews for evidence of slow-moving or obsolete parts. The write-down is based on comparison between inventory on hand and estimated future sales for each specific product. Once written down, inventory write-downs are not reversed until the inventory is sold or scrapped. Inventory write-downs are also established when conditions indicate that the net realizable value is less than cost due to physical deterioration, obsolescence, changes in price level or other causes.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment include computer software, computer equipment, leasehold improvements, machinery, and furniture and fixtures. Computer software, computer equipment, machinery, and furniture and fixtures are stated at cost and generally depreciated on a straight-line basis over an estimated useful life of three years, three years, seven years, and three years, respectively. Refer to Note 11, “Balance Sheet Details,” for additional information. Leasehold improvements are amortized on a straight-line basis over the shorter of their estimated useful lives or the remaining terms of the leases. Upon disposal, assets and related accumulated depreciation are removed from the accounts and the related gain or loss is included in the results from operations.
Definite-Lived and Indefinite-Lived Asset Impairment	Definite-Lived Asset Impairment The Company evaluates definite-lived assets (including property, plant and equipment and intangible assets) for impairment whenever events or changes in circumstances indicate the carrying value of an asset group may not be recoverable. The carrying value is not recoverable if it exceeds the undiscounted cash flows resulting from the use of the asset group and its eventual disposition. The Company’s estimates of future cash flows attributable to its asset groups require significant judgment based on its historical and anticipated results and are subject to many factors. Factors that the Company considers important which could trigger an impairment review include significant negative industry or economic trends, significant loss of clients, and significant changes in the manner of its use of the acquired assets or the strategy for its overall business. When the Company determines that the carrying value of the asset groups may not be recoverable based upon the existence of one or more of the above indicators of impairment, the Company measures the potential impairment based on a projected discounted cash flow method using a discount rate determined by the Company to be commensurate with the risk inherent in the Company’s current business model. An impairment loss is recognized only if the carrying amount of the asset group is not recoverable and exceeds its fair value. The impairment charge is recorded to reduce the pre-impairment carrying amount of the assets based on the relative carrying amount of those assets, though not to reduce the carrying amount of an asset below its fair value. Different assumptions and judgments could materially affect the calculation of the fair value of the assets. During 2022, 2021 and 2020, the Company did not recognize any impairment of its definite-lived and indefinite-lived assets.
Income Taxes	Income Taxes Income taxes are accounted for using an asset and liability approach, which requires the recognition of deferred tax assets and liabilities for expected future tax events that have been recognized differently on the Company’s consolidated financial statements and tax returns. The measurement of current and deferred tax assets and liabilities is based on provisions of the enacted tax law and the effects of future changes in tax laws or rates are not anticipated. A valuation allowance is established when necessary to reduce deferred tax assets to amounts expected to be realized based on available evidence. In addition, the calculation of the Company’s tax liabilities involves dealing with uncertainties in the application of complex tax regulations. As a result, the Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in its tax return. The Company considers many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately anticipate actual outcomes.
Stock-Based Compensation and Equity Incentive Plans	Stock-Based Compensation and Equity Incentive Plans The Company maintained stock plans covering a broad range of equity grants including stock options, nonvested equity stock and equity stock units and performance-based instruments. In addition, the Company sponsors an Employee Stock Purchase Plan (“ESPP”), whereby eligible employees are entitled to purchase common stock semi-annually, by means of limited payroll deductions, at a 15% discount from the fair market value of the common stock as of specific dates. The Company determines compensation expense associated with restricted stock units based on the fair value of its common stock on the date of grant. The Company determines compensation expense associated with stock options based on the estimated grant-date fair value method using the Black-Scholes Merton (“BSM”) valuation model. The Company generally recognizes compensation expense using a straight-line amortization method over the respective vesting period for awards that are ultimately expected to vest. Stock-based compensation expense for the years ended December 31, 2022, 2021 and 2020 has been reduced for estimated forfeitures. When estimating forfeitures, the Company considers voluntary termination behaviors, as well as trends of actual option forfeitures.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash equivalents are highly liquid investments with original maturity of three months or less at the date of purchase. The Company maintains its cash balances with high quality financial institutions. Cash equivalents are invested in highly-rated and highly-liquid money market securities and certain U.S. government sponsored obligations.
Marketable Securities	Marketable Securities Rambus invests its excess cash and cash equivalents primarily in U.S. government-sponsored obligations, commercial paper, corporate notes and bonds, and money market funds that mature within three years. Available-for-sale securities are carried at fair value, based on quoted market prices, with the unrealized gains or losses reported, net of tax, in stockholders’ equity as part of accumulated other comprehensive income (loss). The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity, both of which are included in interest and other income, net. Realized gains and losses are recorded on the specific identification method and are included in interest and other income, net. The Company reviews its investments in marketable securities for possible other than temporary impairments on a regular basis. If any loss on investment is believed to be a credit loss, a charge will be recognized in operations. In evaluating whether a credit loss on a debt security has occurred, the Company considers the following factors: 1) the Company’s intent to sell the security, 2) if the Company intends to hold the security, whether or not it is more likely than not that the Company will be required to sell the security before recovery of the security’s amortized cost basis and 3) even if the Company intends to hold the security, whether or not the Company expects the security to recover the entire amortized cost basis. Due to the high credit quality and short-term nature of the Company’s investments, there have been no material credit losses recorded to date. The classification of funds between short-term and long-term is based on whether the securities are available for use in operations or other purposes.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The fair value measurement statement defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, and requires disclosure that establishes a framework for measuring fair value and expands disclosure about fair value measurements. The statement requires that fair value measurement be classified and disclosed in one of the following three categories: Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. The Company uses unadjusted quotes to determine fair value. The financial assets in Level 1 include money market funds. Level 2: Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability. The Company uses observable pricing inputs including benchmark yields, reported trades, and broker/dealer quotes. The financial assets in Level 2 include U.S. government bonds and notes, corporate notes, and commercial paper. Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). When determining fair value, the Company considers the principal or most advantageous market in which the Company would transact, and the Company considers assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions, and risk of non-performance. The Company does not have any financial assets or liabilities in Level 3 as of December 31, 2022 and 2021, except for the Company’s liability for the earn-out consideration related to the PLDA acquisition. The Company has classified this liability within Level 3 of the fair value hierarchy because the fair value is determined using significant unobservable inputs. Refer to Note 20, “Acquisitions , ” for additional information. The carrying value of cash equivalents, accounts receivable and accounts payable approximate their fair values due to their relatively short maturities as of December 31, 2022 and 2021. The Company’s financial instruments are measured and recorded at fair value, except for equity method investments and convertible notes. Marketable securities are comprised of available-for-sale securities that are reported at fair value with the related unrealized gains and losses included in accumulated other comprehensive income (loss), a component of stockholders’ equity, net of tax. Fair value of the marketable securities is determined based on quoted market prices. The fair value of the Company’s convertible notes fluctuates with interest rates and with the market price of the common stock, but does not affect the carrying value of the debt on the balance sheet.
Research and Development	Research and Development Costs incurred in research and development, which include engineering expenses, such as salaries and related benefits, stock-based compensation, depreciation, professional services and overhead expenses related to the general development of the Company’s products, are expensed as incurred. Software development costs are capitalized beginning when a product’s technological feasibility has been established and ending when a product is available for general release to customers. The Company has not capitalized any software development costs since the period between establishing technological feasibility and general customer release is relatively short and as such, these costs have not been material.
Computation of Earnings (Loss) Per Share	Computation of Earnings (Loss) Per Share Basic earnings (loss) per share is calculated by dividing the net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted earnings (loss) per share is calculated by dividing the earnings (loss) by the weighted-average number of common shares and potentially dilutive securities outstanding during the period. Potentially dilutive common shares consist of incremental common shares issuable upon exercise of stock options, employee stock purchases, restricted stock and restricted stock units, and shares issuable upon the conversion of convertible notes. The dilutive effect of outstanding shares is reflected in diluted earnings per share by application of the treasury stock method, or the if-converted method for the in-the-money conversion benefit feature of the 2023 Notes. This method includes consideration of the amounts to be paid by the employees, the amount of excess tax benefits that would be recognized in equity if the instrument was exercised and the amount of unrecognized stock-based compensation related to future services. No potential dilutive common shares are included in the computation of any diluted per share amount when a net loss is reported.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources, including foreign currency translation adjustments and unrealized gains and losses on marketable securities. Other comprehensive income (loss), net of tax, is presented on the consolidated statements of comprehensive income (loss).
Credit Concentration	Credit Concentration As of December 31, 2022 and 2021, the Company’s cash, cash equivalents and marketable securities were invested with various financial institutions in the form of corporate notes, bonds and commercial paper, money market funds, U.S. Treasuries and U.S. Government Agencies. The Company’s exposure to market risk for changes in interest rates relates primarily to its investment portfolio. The Company places its investments with high credit issuers and, by investment policy, attempts to limit the amount of credit exposure to any one issuer. As stated in the Company’s investment policy, it will ensure the safety and preservation of the Company’s invested funds by limiting default risk and market risk. The Company has no investments denominated in foreign country currencies and therefore is not subject to foreign exchange risk from these assets. The Company holds cash, cash equivalents and marketable securities in excess of federally insured limits. The Company mitigates default risk by investing in high credit quality securities and by positioning its portfolio to respond appropriately to a significant reduction in a credit rating of any investment issuer or guarantor. The portfolio includes only marketable securities with active secondary or resale markets to enable portfolio liquidity. The Company’s note hedge transactions, entered into in connection with the 1.375% convertible senior notes due 2023 (the “2023 Notes”), expose the Company to credit risk to the extent that its counterparties may be unable to meet the terms of the transactions. The Company mitigates this risk by limiting its counterparties to major financial institutions. Refer to Note 12, “Convertible Notes,” for additional information. The Company’s accounts receivable are derived from revenue earned from customers located in the U.S. and internationally. Refer to Note 7, “Segments and Major Customers,” for additional information.
Foreign Currency Translation and Re-Measurement	Foreign Currency Translation and Re-Measurement The Company translates the assets and liabilities of its non-U.S. dollar functional currency subsidiaries into U.S. dollars using exchange rates in effect at the end of each period. Revenue and expenses for these subsidiaries are translated using rates that approximate those in effect during the period. Gains and losses from these translations are recognized in foreign currency translation included in accumulated other comprehensive gain (loss) on the consolidated statements of stockholders’ equity. The Company’s subsidiaries that use the U.S. dollar as their functional currency re-measure monetary assets and liabilities at exchange rates in effect at the end of each period, and inventories, property and non-monetary assets and liabilities at historical rates. Additionally, foreign currency transaction gains and losses are included in interest income and other (income) expense, net, on the consolidated statements of operations and were not material in the periods presented.
Business Combinations	Business Combinations The Company accounts for acquisitions of businesses using the purchase method of accounting, which requires the Company to recognize separately from goodwill the assets acquired and the liabilities assumed at their acquisition date fair values. While the Company uses its best estimates and assumptions to accurately value assets acquired and liabilities assumed at the acquisition date, as well as contingent consideration, where applicable, the estimates are inherently uncertain and subject to refinement. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded on the consolidated statements of operations. Accounting for business combinations requires management to make significant estimates and assumptions, especially at the acquisition date including the Company’s estimates for intangible assets, contractual obligations assumed and pre-acquisition contingencies where applicable. Although, the Company believes the assumptions and estimates made in the past have been reasonable and appropriate, they are based in part on historical experience and information obtained from the management of the acquired companies and are inherently uncertain. On May 20, 2022, the Company completed the acquisition of Hardent, Inc. and applied judgment in estimating the fair value of the intangible assets from the acquisition. This involved the use of assumptions related to revenue growth rates and discount rates for the existing technology acquired, and the use of assumptions related to cost of labor to recreate the intangible assets for the customer contracts and contract relationships acquired. Unanticipated events and circumstances may occur that may affect the accuracy or validity of such assumptions, estimates or actual results.
Litigation	Litigation The Company may be involved in certain legal proceedings. Based upon consultation with outside counsel handling its defense in these matters and an analysis of potential results, if the Company believes that a loss arising from such matters is probable and can be reasonably estimated, the Company records the estimated liability on its consolidated financial statements. If only a range of estimated losses can be determined, the Company records an amount within the range that, in its judgment, reflects the most likely outcome; if none of the estimates within that range is a better estimate than any other amount, the Company records the low end of the range. Any such accrual would be charged to expense in the appropriate period. The Company recognizes litigation expenses in the period in which the litigation services were provided.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
Revenue Recognition (Tables)	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Contract balances	The Company’s contract balances were as follows: As of December 31, (In thousands) 2022 2021 Unbilled receivables $ 150,920 $ 258,626 Deferred revenue 25,421 26,198

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	12 Months Ended
Earnings (Loss) Per Share (Tables)	Dec. 31, 2022
Earnings Per Share [Abstract]
Computation of basic and diluted income (loss) per share	The following table sets forth the computation of basic and diluted income (loss) per share: For the Years Ended December 31, (In thousands, except per share amounts) 2022 2021 2020 Net income (loss) per share: Numerator: Net income (loss) $ (14,310) $ 18,334 $ (40,471) Denominator: Weighted-average common shares outstanding - basic 109,472 110,538 113,254 Effect of potential dilutive common shares — 4,327 — Weighted-average common shares outstanding - diluted 109,472 114,865 113,254 Basic net income (loss) per share $ (0.13) $ 0.17 $ (0.36) Diluted net income (loss) per share $ (0.13) $ 0.16 $ (0.36)
Schedule of antidilutive securities excluded from computation of earnings per share	The following potentially dilutive securities were excluded from the calculation of diluted net loss per share attributable to the Company’s common stockholders for the periods presented because the impact of including them would have been anti-dilutive (in thousands): For the Years Ended December 31, (In thousands) 2022 2020 Stock options 282 227 Restricted stock units 2,361 2,067 Potentially issuable shares related to the in-the-money conversion benefit feature of convertible notes 175 — Contingently issuable ESPP shares — 12 Total 2,818 2,306 The potentially dilutive securities during the year ended December 31, 2021 were immaterial.

Intangible Assets and Goodwill

Intangible Assets and Goodwill (Tables)	12 Months Ended
Intangible Assets and Goodwill (Tables)	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of changes in carrying amount of goodwill	The following tables present goodwill information for the years ended December 31, 2022 and December 31, 2021: (In thousands) December 31, Addition to Goodwill (1) Adjustments to Goodwill (2) Effect of Exchange Rates (3) December 31, Total goodwill $ 278,810 $ 12,069 $ 1,013 $ 148 $ 292,040 ______________________________________ (1) In May 2022, the Company acquired Hardent, Inc. (“Hardent”), which resulted in the Company recognizing additional goodwill. Refer to Note 20, “Acquisitions,” for additional information. (2) The adjustments to goodwill primarily include a correction of an immaterial error related to an understatement in other current liabilities that originated from the acquisition of AnalogX Inc. (“AnalogX”) in 2021 and working capital adjustments from the acquisition of Hardent. (3) Effect of exchange rates relates to foreign currency translation adjustments for the period. As of December 31, 2022 (In thousands) Gross Carrying Amount Accumulated Impairment Losses Net Carrying Amount Total goodwill $ 313,810 $ (21,770) $ 292,040 (In thousands) December 31, Additions to Goodwill (1) December 31, Total goodwill $ 183,222 $ 95,588 $ 278,810 ______________________________________ (1) In July 2021, the Company acquired AnalogX and in August 2021, the Company acquired PLDA, which resulted in the Company recognizing additional goodwill. Refer to Note 20, “Acquisitions,” for additional information. As of December 31, 2021 (In thousands) Gross Carrying Amount Accumulated Impairment Losses Net Carrying Amount Total goodwill $ 300,580 $ (21,770) $ 278,810
Components of intangible assets	The components of the Company’s intangible assets as of December 31, 2022 and December 31, 2021 were as follows: As of December 31, 2022 (In thousands, except useful life) Useful Life Gross Carrying Amount (1) Accumulated Amortization (1) Net Carrying Amount Existing technology 3 to 10 years $ 299,925 $ (261,708) $ 38,217 Customer contracts and contractual relationships 0.5 to 10 years 37,996 (36,533) 1,463 Non-compete agreements and trademarks 3 years 300 (300) — IPR&D Not applicable 11,200 — 11,200 Total intangible assets $ 349,421 $ (298,541) $ 50,880 ______________________________________ (1) During the year ended December 31, 2022, the Company acquired certain intangible assets for $3.0 million in cash. The assets were classified as existing technology and are being amortized over their expected useful life of five years. During the year ended December 31, 2022, the amortization for the acquired assets was not material. (2) In May 2022, the Company acquired Hardent, which resulted in the Company recognizing additional intangible assets. Refer to Note 20, “Acquisitions,” for additional information. As of December 31, 2021 (In thousands, except useful life) Useful Life Gross Carrying Amount (1) Accumulated Amortization (1) Net Carrying Amount Existing technology 3 to 10 years $ 292,058 $ (247,422) $ 44,636 Customer contracts and contractual relationships 0.5 to 10 years 37,793 (35,209) 2,584 Non-compete agreements and trademarks 3 years 300 (300) — IPR&D Not applicable 11,200 — 11,200 Total intangible assets $ 341,351 $ (282,931) $ 58,420 ______________________________________
Estimated future amortization expense of intangible assets	The estimated future amortization expense of intangible assets as of December 31, 2022 was as follows (in thousands): Years Ending December 31: Amount 2023 $ 15,388 2024 12,736 2025 6,696 2026 4,378 2027 482 Thereafter — Total amortizable purchased intangible assets 39,680 IPR&D 11,200 Total intangible assets $ 50,880

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
Segment Information (Tables)	Dec. 31, 2022
Concentration risk
Revenue from external customer by geographic regions	Revenue from customers in the geographic regions based on the location of contracting parties was as follows: Years Ended December 31, (In thousands) 2022 2021 2020 USA $ 277,776 $ 211,419 $ 137,614 Singapore 57,309 39,798 28,034 Asia-Other 54,421 28,949 26,249 Taiwan 35,116 23,953 21,803 Japan 16,516 14,894 20,437 South Korea 7,222 6,007 3,664 Europe 6,213 3,165 7,359 Canada 220 119 1,162 Total $ 454,793 $ 328,304 $ 246,322
Accounts receivable
Concentration risk
Schedule of customer accounts representing 10% or more than 10% of total balance	Accounts receivable from the Company’s major customers representing 10% or more of total accounts receivable at December 31, 2022 and 2021, respectively, was as follows: As of December 31, Customer 2022 2021 Customer 1 23 % 17 % Customer 2 16 % * Customer 3 14 % 19 % _________________________________________ * Customer accounted for less than 10% of total accounts receivable in the period.
Revenue
Concentration risk
Schedule of customer accounts representing 10% or more than 10% of total balance	Revenue from the Company’s major customers representing 10% or more of total revenue for the years ended December 31, 2022, 2021 and 2020, respectively, was as follows: Years Ended December 31, Customer 2022 2021 2020 Customer A 19 % 21 % 12 % Customer B 17 % 13 % * Customer C 14 % 11 % 15 % _________________________________________ * Customer accounted for less than 10% of total revenue in the period.

Marketable Securities (Tables)

Marketable Securities (Tables)	12 Months Ended
Marketable Securities (Tables)	Dec. 31, 2022
Debt Securities, Available-for-Sale [Abstract]
Cash equivalents and marketable securities classified as available-for-sale	Total cash, cash equivalents and marketable securities are summarized as follows: As of December 31, 2022 (In thousands, except percentages) Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Weighted Rate of Return Money market funds $ 15,763 $ 15,763 $ — $ — 2.63 % U.S. Government bonds and notes 96,371 98,250 1 (1,880) 1.73 % Corporate notes, bonds and commercial paper 106,355 108,092 7 (1,744) 2.59 % Total cash equivalents and marketable securities 218,489 222,105 8 (3,624) Cash 94,737 94,737 — — Total cash, cash equivalents and marketable securities $ 313,226 $ 316,842 $ 8 $ (3,624) As of December 31, 2021 (In thousands, except percentages) Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Weighted Rate of Return Money market funds $ 7,402 $ 7,402 $ — $ — 0.02 % U.S. Government bonds and notes 102,812 103,113 — (301) 0.29 % Corporate notes, bonds and commercial paper 287,905 288,667 8 (770) 0.22 % Total cash equivalents and marketable securities 398,119 399,182 8 (1,071) Cash 87,490 87,490 — — Total cash, cash equivalents and marketable securities $ 485,609 $ 486,672 $ 8 $ (1,071)
Available-for-sale securities reported at fair value	Available-for-sale securities are reported at fair value on the balance sheets and classified along with cash as follows: As of December 31, (In thousands) 2022 2021 Cash equivalents $ 30,597 $ 20,401 Short-term marketable securities 187,892 377,718 Total cash equivalents and marketable securities 218,489 398,119 Cash 94,737 87,490 Total cash, cash equivalents and marketable securities $ 313,226 $ 485,609
Estimated fair value of cash equivalents and marketable securities classified by date of contractual maturity and the length of time that the securities have been in a continuous unrealized loss position	The estimated fair value and gross unrealized losses of cash equivalents and marketable securities classified by the length of time that the securities have been in a continuous unrealized loss position at December 31, 2022 and 2021 are as follows: Fair Value Gross Unrealized Losses (In thousands) December 31, December 31, December 31, December 31, Less than 12 months U.S. Government bonds and notes $ 28,893 $ 82,822 $ (23) $ (301) Corporate notes, bonds and commercial paper 45,538 255,783 (35) (770) Total cash equivalents and marketable securities in a continuous unrealized loss position for less than 12 months 74,431 338,605 (58) (1,071) 12 months or greater U.S. Government bonds and notes 62,588 — (1,857) — Corporate notes, bonds and commercial paper 49,559 — (1,709) — Total cash equivalents and marketable securities in a continuous unrealized loss position for 12 months or greater 112,147 — (3,566) — Total cash equivalents and marketable securities in a continuous unrealized loss position $ 186,578 $ 338,605 $ (3,624) $ (1,071)
Contractual maturities of cash equivalents (excluding money market funds which have no maturity) and marketable securities	The contractual maturities of cash equivalents (excluding money market funds which have no maturity) and marketable securities are summarized as follows: (In thousands) December 31, Due less than one year $ 177,356 Due from one year through three years 25,370 Total $ 202,726

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	12 Months Ended
Fair Value of Financial Instruments (Tables)	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Financial instruments not carried at fair value but requiring fair value disclosure	The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure as of December 31, 2022 and 2021: As of December 31, 2022 As of December 31, 2021 (In thousands) Face Carrying Value Fair Face Carrying Value Fair 1.375% Convertible Senior Notes due 2023 (the “2023 Notes”) $ 10,381 $ 10,378 $ 19,625 $ 172,500 $ 163,687 $ 254,103
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents the financial instruments and liabilities that are carried at fair value and summarizes their valuation by the respective pricing levels detailed in Note 2, “Summary of Significant Accounting Policies,” as of December 31, 2022 and 2021: As of December 31, 2022 (In thousands) Total Quoted Market Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs Assets carried at fair value Money market funds $ 15,763 $ 15,763 $ — $ — U.S. Government bonds and notes 96,371 — 96,371 — Corporate notes, bonds and commercial paper 106,355 — 106,355 — Total assets carried at fair value $ 218,489 $ 15,763 $ 202,726 $ — Liabilities carried at fair value Earn-out consideration related to PLDA acquisition $ 14,800 $ — $ — $ 14,800 Total liabilities carried at fair value $ 14,800 $ — $ — $ 14,800 As of December 31, 2021 (In thousands) Total Quoted Market Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs Assets carried at fair value Money market funds $ 7,402 $ 7,402 $ — $ — U.S. Government bonds and notes 102,812 — 102,812 — Corporate notes, bonds and commercial paper 287,905 — 287,905 — Total assets carried at fair value $ 398,119 $ 7,402 $ 390,717 $ — Liabilities carried at fair value Earn-out consideration related to PLDA acquisition $ 16,900 $ — $ — $ 16,900 Total liabilities carried at fair value $ 16,900 $ — $ — $ 16,900 Years Ended December 31, (In thousands) 2022 2021 2020 Balance as of January 1 $ 16,900 $ — $ 1,800 Addition of earn-out liability due to acquisition — 11,600 — Change in fair value of earn-out liability due to remeasurement 3,111 5,300 (1,800) Change in fair value of earn-out liability due to achievement of revenue target (5,211) — — Balance as of December 31 $ 14,800 $ 16,900 $ —

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2022
Leases [Abstract]
Lessee, operating lease liabilities, maturities and undiscounted cash flows	The table below reconciles the undiscounted cash flows for the first five years and total of the remaining years to the operating lease liabilities recorded on the consolidated balance sheet as of December 31, 2022 (in thousands): Years ending December 31, Amount 2023 $ 6,606 2024 5,279 2025 5,349 2026 5,576 2027 4,746 Thereafter 12,996 Total minimum lease payments 40,552 Less: amount of lease payments representing interest (6,449) Present value of future minimum lease payments 34,103 Less: current obligations under leases (5,024) Long-term lease obligations $ 29,079

Balance Sheet Details (Tables)

Balance Sheet Details (Tables)	12 Months Ended
Balance Sheet Details (Tables)	Dec. 31, 2022
Balance Sheet Related Disclosures [Abstract]
Inventory	Inventories consisted of the following: As of December 31, (In thousands) 2022 2021 Raw materials $ 4,683 $ 3,879 Work in process 8,341 1,536 Finished goods 7,876 3,067 Total $ 20,900 $ 8,482
Components of property, plant and equipment, net	Property, plant and equipment, net is comprised of the following: As of December 31, (In thousands) 2022 2021 Computer software $ 59,500 $ 51,922 Computer equipment 36,865 34,484 Leasehold improvements 32,384 34,120 Machinery 19,587 14,840 Furniture and fixtures 12,664 13,328 Construction in progress 6,949 1,813 Property, plant and equipment, gross 167,949 150,507 Less accumulated depreciation and amortization (81,694) (94,472) Property, plant and equipment, net $ 86,255 $ 56,035
Schedule of accumulated other comprehensive income (loss)	Accumulated other comprehensive gain (loss) is comprised of the following: As of December 31, (In thousands) 2022 2021 Foreign currency translation adjustments $ (1,195) $ (237) Unrealized loss on available-for-sale securities, net of tax (3,768) (1,215) Total $ (4,963) $ (1,452)

Convertible Notes (Tables)

Convertible Notes (Tables)	12 Months Ended
Convertible Notes (Tables)	Dec. 31, 2022
Debt Disclosure [Abstract]
Schedule of convertible notes	The Company’s convertible notes are shown in the following table: As of December 31, (In thousands) 2022 2021 2023 Notes $ 10,381 $ 172,500 Unamortized discount — 2023 Notes (1) — (8,266) Unamortized debt issuance costs — 2023 Notes (3) (547) Total convertible notes 10,378 163,687 Less current portion 10,378 163,687 Total long-term convertible notes $ — $ — _________________________________________ (1) On January 1, 2022, the Company adopted ASU No. 2020-06. Refer to Note 3, “Recent Accounting Pronouncements,” for additional information.
Schedule of interest expense on notes	Interest expense related to the convertible notes for the years ended December 31, 2022, 2021 and 2020 was as follows: Years Ended December 31, (In thousands) 2022 2021 2020 2023 Notes coupon interest at a rate of 1.375% $ 610 $ 2,372 $ 2,372 2023 Notes amortization of discount and debt issuance cost 194 7,656 7,243 Total interest expense on convertible notes $ 804 $ 10,028 $ 9,615

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Schedule of material contractual obligations	As of December 31, 2022, the Company’s material contractual obligations were as follows: (In thousands) Total 2023 2024 2025 2026 2027 Contractual obligations (1) (2) Other contractual obligations $ 3,800 $ 3,200 $ 600 $ — $ — $ — Software licenses (3) 42,929 18,394 16,452 8,083 — — Acquisition retention bonuses (4) 5,364 2,507 2,507 350 — — Convertible notes (5) 10,381 10,381 — — — — Interest payments related to convertible notes 71 71 — — — — Total $ 62,545 $ 34,553 $ 19,559 $ 8,433 $ — $ — ______________________________________ (1) The above table does not reflect possible payments in connection with unrecognized tax benefits of approximately $20.9 million including $19.6 million recorded as a reduction of long-term deferred tax assets and $1.3 million in long-term income taxes payable, as of December 31, 2022. As noted below in Note 18, “Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months, the Company cannot reasonably estimate the outcome at this time. (2) For the Company’s lease commitments as of December 31, 2022, refer to Note 10, “Leases.” (3) The Company has commitments with various software vendors for agreements generally having terms longer than one year. During the second and fourth quarters of 2022, the Company renewed certain software license agreements for engineering development tools, which are included in the table above. As of December 31, 2022, approximately $15.6 million of the fair value of the liability was included in other current liabilities and $22.2 million was included in other long-term liabilities, in the accompanying consolidated balance sheet. (4) In connection with the acquisition of Northwest Logic, Inc. (“Northwest Logic”) in the third quarter of 2019, the Secure Silicon IP and Protocols business from Verimatrix, formerly Inside Secure, in the fourth quarter of 2019, the acquisitions of AnalogX and PLDA in the third quarter of 2021, and the acquisition of Hardent in the second quarter of 2022, the Company is obligated to pay retention bonuses to certain employees subject to certain eligibility and acceleration provisions including the condition of employment. (5) On November 17, 2017, the Company entered into an Indenture with U.S. Bank National Association, as trustee, relating to the issuance by the Company of $172.5 million aggregate principal amount of the 2023 Notes. During the year ended December 31, 2022, the Company repurchased $162.1 million aggregate principal amount of its 2023 Notes. Refer to Note 12, “Convertible Notes,” for additional information.

Equity Incentive Plans and St_2

Equity Incentive Plans and Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Schedule of shares available for grant	A summary of shares available for grant under the Company’s plans is as follows: Shares Available for Grant Total shares available for grant as of December 31, 2019 6,826,863 Increase in shares approved for issuance (1) 7,800,000 Stock options granted (40,000) Stock options forfeited 101,816 Nonvested equity stock and stock units granted (2) (3) (3,528,401) Nonvested equity stock and stock units forfeited (2) 1,252,042 Total shares available for grant as of December 31, 2020 12,412,320 Stock options forfeited 54,327 Nonvested equity stock and stock units granted (2) (4) (3,918,251) Nonvested equity stock and stock units forfeited (2) 1,943,782 Total shares available for grant as of December 31, 2021 10,492,178 Nonvested equity stock and stock units granted (2) (5) (4,107,633) Nonvested equity stock and stock units forfeited (2) 1,271,224 Total shares available for grant as of December 31, 2022 7,655,769 ______________________________________ (1) On April 30, 2020, the Company’s stockholders approved an additional 7,800,000 shares for issuance under the 2015 Plan. (2) For purposes of determining the number of shares available for grant under the 2015 Plan against the maximum number of shares authorized, each restricted stock granted reduces the number of shares available for grant by 1.5 shares and each restricted stock forfeited increases shares available for grant by 1.5 shares. (3) Amount includes approximately 0.5 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2020 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below. (4) Amount includes approximately 0.4 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2021 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below. (5) Amount includes approximately 0.6 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2022 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below.
Schedule of stock option activity	The following table summarizes stock option activity under the Company’s equity incentive plans for the years ended December 31, 2022, 2021 and 2020 and information regarding stock options outstanding, exercisable, and vested and expected to vest as of December 31, 2022: Options Outstanding Weighted-Average Remaining Contractual Term (years) (In thousands, except per share amounts and years) Number of Shares Weighted-Average Exercise Price Per Share Aggregate Intrinsic Value Outstanding as of December 31, 2019 1,639,146 $ 11.37 Options granted 40,000 $ 15.59 Options exercised (613,119) $ 10.74 Options forfeited (101,816) $ 19.41 Outstanding as of December 31, 2020 964,211 $ 11.08 Options exercised (360,303) $ 11.06 Options forfeited (54,327) $ 14.98 Outstanding as of December 31, 2021 549,581 $ 10.71 Options exercised (117,138) $ 7.43 Outstanding as of December 31, 2022 432,443 $ 11.60 3.8 $ 10,472 Vested or expected to vest at December 31, 2022 432,399 $ 11.60 3.8 $ 10,471 Options exercisable at December 31, 2022 415,776 $ 11.53 3.6 $ 10,097
Weighted-average assumptions for stock option plan	The following table presents the weighted-average assumptions used to estimate the fair value of stock options granted that contain only service conditions in the periods presented: Stock Option Plan for Year Ended December 31, 2020 Stock Option Plan Expected stock price volatility 38% Risk free interest rate 0.2% Expected term (in years) 5.5 Weighted-average fair value of stock options granted $5.46 There were no stock options granted during the years ended December 31, 2022 and 2021, respectively.
Weighted-average assumptions for employee stock purchase plan	Employee Stock Purchase Plan for Years Ended December 31, 2022 2021 2020 Employee Stock Purchase Plan Expected stock price volatility 40%-44% 32%-33% 37%-46% Risk free interest rate 1.49%-4.58% 0.04%-0.05% 0.1% Expected term (in years) 0.5 0.5 0.5 Weighted-average fair value of purchase rights granted under the purchase plan $8.02 $5.17 $3.46
Schedule of nonvested equity stock and stock units activity	The following table reflects the activity related to nonvested equity stock and stock units for the years ended December 31, 2022, 2021 and 2020: Nonvested Equity Stock and Stock Units Shares Weighted-Average Nonvested at December 31, 2019 5,289,483 $ 11.27 Granted 1,986,117 $ 15.60 Vested (1,693,659) $ 11.70 Forfeited (730,676) $ 11.83 Nonvested at December 31, 2020 4,851,265 $ 12.82 Granted 2,363,885 $ 21.18 Vested (1,524,950) $ 12.41 Forfeited (971,815) $ 15.30 Nonvested at December 31, 2021 4,718,385 $ 16.62 Granted 2,338,255 $ 28.10 Vested (1,853,260) $ 14.42 Forfeited (485,320) $ 20.48 Nonvested at December 31, 2022 4,718,060 $ 22.78

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Schedule of income (loss) before income tax	Income (loss) before taxes consisted of the following: Years Ended December 31, (In thousands) 2022 2021 2020 Domestic $ (16,663) $ 19,244 $ (39,937) Foreign 8,838 4,042 3,398 $ (7,825) $ 23,286 $ (36,539)
Components of provision for income taxes	The provision for income taxes was comprised of: Years Ended December 31, (In thousands) 2022 2021 2020 Federal: Current $ 183 $ (112) $ (446) Deferred 2,479 2,042 2,018 State: Current (215) 214 657 Deferred 24 324 (1,589) Foreign: Current 5,828 3,328 3,097 Deferred (1,814) (844) 195 $ 6,485 $ 4,952 $ 3,932
Schedule of effective income tax rate reconciliation	The differences between the Company’s effective tax rate and the U.S. federal statutory regular tax rate were as follows: Years Ended December 31, 2022 2021 2020 U.S. federal statutory rate 21.0 % 21.0 % 21.0 % State income tax expense (benefit) 6.1 2.2 (2.5) Withholding tax (36.6) 4.4 (4.1) Foreign rate differential (28.3) 3.3 (4.8) Research and development credit 4.8 (7.1) (4.8) Executive compensation (49.0) 6.6 (1.8) Stock-based compensation 47.9 (7.7) 0.6 Foreign tax credit 57.4 (84.0) (89.5) Foreign-derived intangible income deduction 70.5 (55.8) 13.7 Divestiture — — (20.4) Acquisition (25.1) 8.8 — Debt extinguishment (226.7) — — Other (1.0) (0.2) 0.8 Valuation allowance 76.1 129.8 81.0 (82.9) % 21.3 % (10.8) %
Components of the net deferred tax liabilities	The components of the net deferred tax assets (liabilities) were as follows: As of December 31, (In thousands) 2022 2021 Deferred tax assets: Depreciation and amortization $ 3,247 $ 6,578 Lease liabilities 7,691 7,873 Other timing differences, accruals and reserves 10,393 5,747 Deferred equity compensation 4,366 5,077 Net operating loss carryovers 13,423 14,602 Capitalized research 49,649 22,301 Tax credits 96,758 130,348 Total gross deferred tax assets 185,527 192,526 Deferred tax liabilities: Lease right-of-use assets (5,501) (5,323) Deferred revenue (76) (267) Total gross deferred tax liabilities (5,577) (5,590) Total net deferred tax assets 179,950 186,936 Valuation allowance (201,883) (206,874) Net deferred tax liabilities $ (21,933) $ (19,938) As of December 31, (In thousands) 2022 2021 Reported as: Non-current deferred tax assets $ 3,031 $ 4,047 Non-current deferred tax liabilities (24,964) (23,985) Net deferred tax liabilities $ (21,933) $ (19,938)
Summary of valuation allowance	The following table presents the tax valuation allowance information for the years ended December 31, 2022, 2021 and 2020: (In thousands) Balance at Beginning of Period Charged (Credited) to Operations Charged to Other Account* Valuation Allowance Release Balance at End of Period Tax Valuation Allowance Year ended December 31, 2020 $ 196,098 (21,294) 3 (688) $ 174,119 Year ended December 31, 2021 $ 174,119 32,544 211 — $ 206,874 Year ended December 31, 2022 $ 206,874 (7,233) 2,242 — $ 201,883 ______________________________________ * Amounts not charged to operations are charged to other comprehensive income or retained earnings.
Schedule of reconciliation of the beginning and ending amounts of unrecognized tax benefits	A reconciliation of the beginning and ending amounts of unrecognized income tax benefits for the years ended December 31, 2022, 2021 and 2020 was as follows: Years Ended December 31, (In thousands) 2022 2021 2020 Balance as of January 1 $ 146,215 $ 134,044 $ 115,653 Tax positions related to current year: Additions 18,515 18,748 18,600 Tax positions related to prior years: Additions — 615 — Reductions (199) (1,586) (209) Settlements — (5,606) — Balance as of December 31 $ 164,531 $ 146,215 $ 134,044

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
Acquisitions (Tables)	Dec. 31, 2022
Hardent, Inc.
Business acquisition
Schedule of recognized identified assets acquired and liabilities assumed	The total consideration from the acquisition was allocated as of the Closing Date, and reflects adjustments made during the measurement period, as described in Note 6, “Intangible Assets and Goodwill,” to finalize the purchase price accounting, as follows: (In thousands) Total Cash and cash equivalents $ 209 Accounts receivable 1,088 Unbilled receivables 239 Prepaid expenses and other current assets 16 Identified intangible assets 5,000 Goodwill 12,069 Accounts payable (55) Deferred revenue (578) Income taxes payable (466) Deferred tax liability (1,325) Other current liabilities (56) Total $ 16,141
Schedule of finite-lived intangible assets acquired as part of business combination	The identified intangible assets assumed in the acquisition of Hardent were recognized as follows based upon their estimated fair values as of the acquisition date: Total Estimated Weighted-Average Useful Life (in thousands) (in years) Existing technology $ 4,800 5 years Customer contracts and contractual relationships 200 2 years Total $ 5,000
Business acquisition, pro forma information	Additionally, the pro forma financial results do not include any anticipated synergies or other expected benefits from the acquisition: Years Ended December 31, (In thousands) 2022 2021 (unaudited) Total revenue $ 457,852 $ 336,258 Net income (loss) $ (13,251) $ 19,452
AnalogX, Inc.
Business acquisition
Schedule of recognized identified assets acquired and liabilities assumed	The total consideration from the business combination was allocated as of the Closing Date, and reflects adjustments made through the measurement period, as described in Note 6, “Intangible Assets and Goodwill,” to finalize the purchase price accounting, as follows: (In thousands) Total Cash and cash equivalents $ 2,763 Accounts receivable 280 Unbilled receivables 1,566 Prepaid expenses and other current assets 1,354 Identified intangible assets 6,800 IPR&D 3,800 Goodwill 39,309 Property, plant and equipment, net 118 Accounts payable (1,112) Deferred revenue (23) Income taxes payable (7,127) Other current liabilities (215) Total $ 47,513
Schedule of finite-lived and indefinite-lived intangible assets acquired as part of business combination	The identified intangible assets assumed in the acquisition of AnalogX were recognized as follows based upon their estimated fair values as of the acquisition date: Total Estimated Weighted-Average Useful Life (in thousands) (in years) Existing technology $ 6,300 5 years Customer contracts and contractual relationships 500 2 years IPR&D 3,800 Not applicable Total $ 10,600
PLDA Group
Business acquisition
Schedule of recognized identified assets acquired and liabilities assumed	The total consideration from the business combination was allocated as of the Closing Date as follows: (In thousands) Total Cash and cash equivalents $ 5,820 Accounts receivable 2,233 Inventories 125 Prepaid expenses and other current assets 836 Identified intangible assets 21,400 IPR&D 7,400 Goodwill 57,543 Property, plant and equipment, net 679 Operating lease right-of-use asset 864 Other assets 339 Accounts payable (1,046) Accrued salaries and benefits (814) Deferred revenue (514) Income taxes payable (118) Operating lease liability (852) Deferred tax liability (8,180) Other current liabilities (74) Total $ 85,641
Schedule of finite-lived and indefinite-lived intangible assets acquired as part of business combination	The identified intangible assets assumed in the acquisition of PLDA were recognized as follows based upon their estimated fair values as of the acquisition date: Total Estimated Weighted-Average Useful Life (in thousands) (in years) Existing technology $ 20,400 3 to 5 years Customer contracts and contractual relationships 1,000 2 years IPR&D 7,400 Not applicable Total $ 28,800
AnalogX, Inc and PLDA Group
Business acquisition
Business acquisition, pro forma information	Additionally, the pro forma financial results do not include any anticipated synergies or other expected benefits from the acquisitions: For the Years Ended December 31, (In thousands) 2021 2020 (unaudited) Total revenue $ 338,961 $ 267,006 Net income (loss) $ 16,533 $ (33,871)

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	$ 454,793	$ 328,304	$ 246,322
Minimum
License agreement, term of agreement	1 year
Long-duration contracts, assumptions by product and guarantee, discount rate	5%
Maximum
License agreement, term of agreement	10 years
Long-duration contracts, assumptions by product and guarantee, discount rate	10%
Percentage of completion
Revenue	$ 5,000

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details 2)	Dec. 31, 2022
Minimum
Lessee, Lease, Description
Lessee, operating lease, remaining lease term	1 year
Maximum
Lessee, Lease, Description
Lessee, operating lease, remaining lease term	8 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Details 3)	12 Months Ended
Summary of Significant Accounting Policies (Details 3)	Dec. 31, 2022
Minimum
Components of intangible assets
Useful life (in years)	6 months
Maximum
Components of intangible assets
Useful life (in years)	10 years

Summary of Significant Accoun_6

Summary of Significant Accounting Policies (Details 4)	12 Months Ended
Summary of Significant Accounting Policies (Details 4)	Dec. 31, 2022
Computer software
Property, plant and equipment
Property, plant and equipment, estimated useful life (in years)	3 years
Computer equipment
Property, plant and equipment
Property, plant and equipment, estimated useful life (in years)	3 years
Machinery
Property, plant and equipment
Property, plant and equipment, estimated useful life (in years)	7 years
Furniture and fixtures
Property, plant and equipment
Property, plant and equipment, estimated useful life (in years)	3 years

Summary of Significant Accoun_7

Summary of Significant Accounting Policies (Details 5)	12 Months Ended
Summary of Significant Accounting Policies (Details 5)	Dec. 31, 2022
Contingently issuable ESPP shares
Stock-Based Compensation and Equity Incentive Plans
Discount from the fair market value (as a percentage)	15%

Summary of Significant Accoun_8

Summary of Significant Accounting Policies (Details 6)	12 Months Ended
Summary of Significant Accounting Policies (Details 6)	Dec. 31, 2022
Cash equivalents and marketable securities
Maximum maturity period of available-for-sale securities (in years)	3 years

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022	Dec. 31, 2021
New accounting pronouncements or change in accounting principle
Liabilities	$ (233,297)		$ (370,250)
Accumulated deficit	$ (513,256)		$ (435,227)
Cumulative effect, period of adoption, adjustment \| Convertible senior notes \| Debt discount \| Accounting Standards Update 2020-06
New accounting pronouncements or change in accounting principle
Additional paid in capital		$ 35,200
Liabilities		8,300
Accumulated deficit		26,900
Cumulative effect, period of adoption, adjustment \| Convertible senior notes \| Debt issuance costs \| Accounting Standards Update 2020-06
New accounting pronouncements or change in accounting principle
Additional paid in capital		700
Accumulated deficit		$ 500

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Unbilled receivables	$ 150,920	$ 258,626
Deferred revenue	$ 25,421	$ 26,198

Revenue Recognition (Details 2)

Revenue Recognition (Details 2) - USD ($) $ in Millions	12 Months Ended
Revenue Recognition (Details 2) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Contract balances, revenue recognized	$ 23.6	$ 10.2

Revenue Recognition (Details 3)

Revenue Recognition (Details 3) $ in Millions	Dec. 31, 2022 USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligations	$ 28.8
Remaining performance obligation, expected timing of satisfaction, start date: 2023-01-01
Remaining performance obligation, expected timing of satisfaction
Remaining performance obligations, expected timing of satisfaction period	2 years

Earnings (Loss) Per Share (Deta

Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net income (loss)	$ (14,310)	$ 18,334	$ (40,471)
Denominator:
Weighted-average common shares outstanding, basic (in shares)	109,472	110,538	113,254
Effect of potential dilutive common shares	0	4,327	0
Denominator:
Weighted-average common shares outstanding, diluted (in shares)	109,472	114,865	113,254
Basic net income (loss) per share	$ (0.13)	$ 0.17	$ (0.36)
Diluted net income (loss) per share	$ (0.13)	$ 0.16	$ (0.36)

Earnings (Loss) Per Share (De_2

Earnings (Loss) Per Share (Details 2) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2020
Anti-dilutive shares excluded from calculation of earnings per share
Anti-dilutive shares excluded from calculation of earnings per share	2,818	2,306
Stock options
Anti-dilutive shares excluded from calculation of earnings per share
Anti-dilutive shares excluded from calculation of earnings per share	282	227
Restricted stock units
Anti-dilutive shares excluded from calculation of earnings per share
Anti-dilutive shares excluded from calculation of earnings per share	2,361	2,067
Potentially issuable shares related to the in-the-money conversion benefit feature of convertible notes
Anti-dilutive shares excluded from calculation of earnings per share
Anti-dilutive shares excluded from calculation of earnings per share	175	0
Contingently issuable ESPP shares
Anti-dilutive shares excluded from calculation of earnings per share
Anti-dilutive shares excluded from calculation of earnings per share	0	12

Earnings (Loss) Per Share (Narr

Earnings (Loss) Per Share (Narrative) (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Nov. 17, 2017
Anti-dilutive shares excluded from calculation of earnings per share
Anti-dilutive shares excluded from calculation of earnings per share	2,818		2,306
1.375% Convertible senior notes due 2023 \| Convertible senior notes
Anti-dilutive shares excluded from calculation of earnings per share
Initial conversion price of notes (in dollars per share)	$ 18.93	$ 18.93	$ 18.93	$ 18.93
Potential incremental common shares attributable to dilutive effect of contingently issuable shares		1,400
Potential cumulative common shares attributable to dilutive effect of conversion of convertible notes payable	500
Stock options
Anti-dilutive shares excluded from calculation of earnings per share
Anti-dilutive shares excluded from calculation of earnings per share	282		227

Intangible Assets and Goodwil_2

Intangible Assets and Goodwill (Goodwill Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	$ 278,810	$ 183,222
Addition to goodwill	12,069	95,588
Adjustments to goodwill	1,013
Effect of exchange rates	148
Ending balance	$ 292,040	$ 278,810

Intangible Assets and Goodwil_3

Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill
Gross carrying amount	$ 313,810	$ 300,580
Accumulated impairment losses	(21,770)	(21,770)
Net carrying amount	$ 292,040	$ 278,810	$ 183,222

Intangible Assets and Goodwil_4

Intangible Assets and Goodwill (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Components of intangible assets
Intangible assets, gross	$ 349,421	$ 341,351
Accumulated amortization	(298,541)	(282,931)
Finite-lived intangible assets	39,680
In-process research and development	11,200
Intangible assets, net	50,880	58,420
Acquisition of intangible assets	$ 3,000	0	$ 0
Minimum
Components of intangible assets
Useful life (in years)	6 months
Maximum
Components of intangible assets
Useful life (in years)	10 years
In-process research and development
Components of intangible assets
In-process research and development	$ 11,200	11,200
Existing technology
Components of intangible assets
Gross carrying amount	299,925	292,058
Accumulated amortization	(261,708)	(247,422)
Finite-lived intangible assets	38,217	$ 44,636
Acquisition of intangible assets	$ 3,000
Identified intangible assets assumed, useful life (in years)	5 years
Existing technology \| Minimum
Components of intangible assets
Useful life (in years)	3 years	3 years
Existing technology \| Maximum
Components of intangible assets
Useful life (in years)	10 years	10 years
Customer contracts and contractual relationships
Components of intangible assets
Gross carrying amount	$ 37,996	$ 37,793
Accumulated amortization	(36,533)	(35,209)
Finite-lived intangible assets	$ 1,463	$ 2,584
Customer contracts and contractual relationships \| Minimum
Components of intangible assets
Useful life (in years)	6 months	6 months
Customer contracts and contractual relationships \| Maximum
Components of intangible assets
Useful life (in years)	10 years	10 years
Non-competition agreements
Components of intangible assets
Gross carrying amount	$ 300	$ 300
Accumulated amortization	(300)	(300)
Finite-lived intangible assets	$ 0	$ 0
Useful life (in years)	3 years	3 years

Intangible Assets and Goodwil_5

Intangible Assets and Goodwill (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 15,610	$ 17,467	$ 18,413

Intangible Assets and Goodwil_6

Intangible Assets and Goodwill (Details 4) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Estimated future amortization expense of intangible assets
2023	$ 15,388
2024	12,736
2025	6,696
2026	4,378
2027	482
Thereafter	0
Finite-lived intangible assets	39,680
In-process research and development	11,200
Intangible assets, net	$ 50,880	$ 58,420

Segment Information (Details)

Segment Information (Details) - Customer concentration risk - Accounts receivable	Dec. 31, 2022	Dec. 31, 2021
Customer 1
Concentration risk
Accounts receivable from major customer as a percentage of total accounts receivable	23%	17%
Customer 2
Concentration risk
Accounts receivable from major customer as a percentage of total accounts receivable	16%
Customer 3
Concentration risk
Accounts receivable from major customer as a percentage of total accounts receivable	14%	19%

Segment Information (Details 2)

Segment Information (Details 2) - Customer concentration risk - Revenue	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Customer A
Concentration risk
Revenue from major customer as a percentage of total revenue	19%	21%	12%
Customer B
Concentration risk
Revenue from major customer as a percentage of total revenue	17%	13%
Customer C
Concentration risk
Revenue from major customer as a percentage of total revenue	14%	11%	15%

Segment Information (Details 3)

Segment Information (Details 3) - USD ($) $ in Thousands	12 Months Ended
Segment Information (Details 3) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Major customer disclosure
Revenue	$ 454,793	$ 328,304	$ 246,322
Property, plant and equipment, net	86,255	56,035
USA
Major customer disclosure
Revenue	277,776	211,419	137,614
Property, plant and equipment, net	80,500	49,800
Singapore
Major customer disclosure
Revenue	57,309	39,798	28,034
Asia-Other
Major customer disclosure
Revenue	54,421	28,949	26,249
Taiwan
Major customer disclosure
Revenue	35,116	23,953	21,803
Japan
Major customer disclosure
Revenue	16,516	14,894	20,437
South Korea
Major customer disclosure
Revenue	7,222	6,007	3,664
Europe
Major customer disclosure
Revenue	6,213	3,165	7,359
Canada
Major customer disclosure
Revenue	220	119	$ 1,162
India
Major customer disclosure
Property, plant and equipment, net	3,400	3,200
Other foreign locations
Major customer disclosure
Property, plant and equipment, net	$ 2,400	$ 3,000

Marketable Securities (Details)

Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Cash equivalents and marketable securities
Fair value	$ 218,489	$ 398,119
Amortized cost	222,105	399,182
Gross unrealized gains	8	8
Gross unrealized losses	(3,624)	(1,071)
Cash, cash equivalents and marketable securities
Cash, fair value	94,737	87,490
Cash, amortized cost	94,737	87,490
Fair Value	313,226	485,609
Amortized Cost	316,842	486,672
Gross unrealized gains	8	8
Gross unrealized losses	(3,624)	(1,071)
Money market funds
Cash equivalents and marketable securities
Fair value	15,763	7,402
Amortized cost	15,763	7,402
Gross unrealized gains	0	0
Gross unrealized losses	$ 0	$ 0
Weighted rate of return (as a percentage)	2.63%	0.02%
U.S. Government bonds and notes
Cash equivalents and marketable securities
Fair value	$ 96,371	$ 102,812
Amortized cost	98,250	103,113
Gross unrealized gains	1	0
Gross unrealized losses	$ (1,880)	$ (301)
Weighted rate of return (as a percentage)	1.73%	0.29%
Corporate notes, bonds and commercial paper
Cash equivalents and marketable securities
Fair value	$ 106,355	$ 287,905
Amortized cost	108,092	288,667
Gross unrealized gains	7	8
Gross unrealized losses	$ (1,744)	$ (770)
Weighted rate of return (as a percentage)	2.59%	0.22%

Marketable Securities (Details

Marketable Securities (Details 2) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt securities, available-for-sale
Fair value	$ 218,489	$ 398,119
Cash, fair value	94,737	87,490
Cash, cash equivalents and marketable securities, fair value	313,226	485,609
Cash equivalents
Debt securities, available-for-sale
Fair value	30,597	20,401
Short-term marketable securities
Debt securities, available-for-sale
Fair value	$ 187,892	$ 377,718

Marketable Securities (Detail_2

Marketable Securities (Details 3) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt securities, available-for-sale
Less than 12 Months, fair value	$ 74,431	$ 338,605
Less than 12 months, gross unrealized loss	(58)	(1,071)
12 months or greater, fair value	112,147	0
12 months or greater, gross unrealized losses	(3,566)	0
Fair value	186,578	338,605
Gross unrealized losses	(3,624)	(1,071)
U.S. Government bonds and notes
Debt securities, available-for-sale
Less than 12 Months, fair value	28,893	82,822
Less than 12 months, gross unrealized loss	(23)	(301)
12 months or greater, fair value	62,588	0
12 months or greater, gross unrealized losses	(1,857)	0
Corporate notes, bonds and commercial paper
Debt securities, available-for-sale
Less than 12 Months, fair value	45,538	255,783
Less than 12 months, gross unrealized loss	(35)	(770)
12 months or greater, fair value	49,559	0
12 months or greater, gross unrealized losses	$ (1,709)	$ 0

Marketable Securities (Detail_3

Marketable Securities (Details 4) $ in Thousands	Dec. 31, 2022 USD ($)
Contractual maturities
Contractual maturities, fair value, due less than one year	$ 177,356
Contractual maturities, fair value, due from one year through three years	25,370
Contractual maturities, fair value	$ 202,726

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets carried at fair value
Fair value	$ 218,489	$ 398,119
Money market funds
Assets carried at fair value
Fair value	15,763	7,402
U.S. Government bonds and notes
Assets carried at fair value
Fair value	96,371	102,812
Corporate notes, bonds and commercial paper
Assets carried at fair value
Fair value	106,355	287,905
Recurring basis
Assets carried at fair value
Total assets carried at fair value	218,489	398,119
Liabilities carried at fair value
Earn-out consideration related to PLDA acquisition	14,800	16,900
Total liabilities carried at fair value	14,800	16,900
Recurring basis \| Money market funds
Assets carried at fair value
Fair value	15,763	7,402
Recurring basis \| U.S. Government bonds and notes
Assets carried at fair value
Fair value	96,371	102,812
Recurring basis \| Corporate notes, bonds and commercial paper
Assets carried at fair value
Fair value	106,355	287,905
Recurring basis \| Quoted market prices in active markets (Level 1)
Assets carried at fair value
Total assets carried at fair value	15,763	7,402
Liabilities carried at fair value
Earn-out consideration related to PLDA acquisition	0	0
Total liabilities carried at fair value	0	0
Recurring basis \| Quoted market prices in active markets (Level 1) \| Money market funds
Assets carried at fair value
Fair value	15,763	7,402
Recurring basis \| Quoted market prices in active markets (Level 1) \| U.S. Government bonds and notes
Assets carried at fair value
Fair value	0	0
Recurring basis \| Quoted market prices in active markets (Level 1) \| Corporate notes, bonds and commercial paper
Assets carried at fair value
Fair value	0	0
Recurring basis \| Significant other observable inputs (Level 2)
Assets carried at fair value
Total assets carried at fair value	202,726	390,717
Liabilities carried at fair value
Earn-out consideration related to PLDA acquisition	0	0
Total liabilities carried at fair value	0	0
Recurring basis \| Significant other observable inputs (Level 2) \| Money market funds
Assets carried at fair value
Fair value	0	0
Recurring basis \| Significant other observable inputs (Level 2) \| U.S. Government bonds and notes
Assets carried at fair value
Fair value	96,371	102,812
Recurring basis \| Significant other observable inputs (Level 2) \| Corporate notes, bonds and commercial paper
Assets carried at fair value
Fair value	106,355	287,905
Recurring basis \| Significant unobservable inputs (Level 3)
Assets carried at fair value
Total assets carried at fair value	0	0
Liabilities carried at fair value
Earn-out consideration related to PLDA acquisition	14,800	16,900
Total liabilities carried at fair value	14,800	16,900
Recurring basis \| Significant unobservable inputs (Level 3) \| Money market funds
Assets carried at fair value
Fair value	0	0
Recurring basis \| Significant unobservable inputs (Level 3) \| U.S. Government bonds and notes
Assets carried at fair value
Fair value	0	0
Recurring basis \| Significant unobservable inputs (Level 3) \| Corporate notes, bonds and commercial paper
Assets carried at fair value
Fair value	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments (Details 2) - 1.375% Convertible senior notes due 2023 - Convertible senior notes - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Nov. 17, 2017
Debt instrument
Face value	$ 10,381	$ 172,500	$ 172,500
Carrying value	10,378	163,687
Fair Value	$ 19,625	$ 254,103

Fair Value of Financial Instr_5

Fair Value of Financial Instruments (Details 3) - Earn-Out Liability - Significant unobservable inputs (Level 3) - Recurring basis - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of January 1	$ 16,900	$ 0	$ 1,800
Addition of earn-out liability due to acquisition	0	11,600	0
Change in fair value of earn-out liability due to remeasurement	3,111	5,300	(1,800)
Change in fair value of earn-out liability due to achievement of revenue target	(5,211)	0	0
Balance as of December 31	$ 14,800	$ 16,900	$ 0

Fair Value of Financial Instr_6

Fair Value of Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity security without readily determinable fair value
Gain on sale of equity security	$ 3,500
Significant unobservable inputs (Level 3) \| Earn-Out Liability \| Recurring basis
Equity security without readily determinable fair value
Change in fair value recognized in earnings due to remeasurement and achievement of revenue	2,100
Fair value remeasurement recognized as an additional expense	$ 3,111	$ 5,300	$ (1,800)
Private company
Equity security without readily determinable fair value
Equity method investment, ownership percentage	25%	25%
Other assets \| Private company
Equity security without readily determinable fair value
Equity method investment	$ 500	$ 1,800

Leases (Lease Arrangement) (Det

Leases (Lease Arrangement) (Details) - San Jose facility	Dec. 31, 2021 USD ($)	Apr. 30, 2020 USD ($) ft²
Lessee, Lease, Description
Total space under lease (in square feet) \| ft²		90,000
Lessee, operating lease, term of contract		128 months
Lessee, operating lease, variable rate, beginning of lease		$ 3.26
Lessee, operating lease, variable rate, end of lease		$ 4.38
Lessee, operating lease, renewal term		60 months
Lessee, operating lease, total required lease payments		$ 41,000,000
Total reimbursement receivable under lease agreement		$ 9,000,000
Total reimbursement received under lease agreement	$ 9,000,000

Leases (Operating Lease Maturit

Leases (Operating Lease Maturities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
2023	$ 6,606
2024	5,279
2025	5,349
2026	5,576
2027	4,746
Thereafter	12,996
Total minimum lease payments	40,552
Less: amount of lease payments representing interest	(6,449)
Present value of future minimum lease payments	34,103
Operating lease liabilities	5,024	$ 5,992
Long-term operating lease liabilities	$ 29,079	$ 29,099

Leases (Additional Details) (De

Leases (Additional Details) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease, weighted-average remaining lease term	7 years 1 month 6 days
Operating lease, weighted-average discount rate, percent	5.30%
Operating lease, cost	$ 7.5	$ 7.4	$ 9.5
Operating lease, payments	$ 8.6	$ 7.8	$ 7.2

Balance Sheet Details (Details)

Balance Sheet Details (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Inventory
Raw materials	$ 4,683	$ 3,879
Work in process	8,341	1,536
Finished goods	7,876	3,067
Inventories	$ 20,900	$ 8,482

Balance Sheet Details (Details

Balance Sheet Details (Details 2) - USD ($) $ in Thousands	12 Months Ended
Balance Sheet Details (Details 2) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, plant and equipment, net
Property, plant and equipment, gross	$ 167,949	$ 150,507
Less accumulated depreciation and amortization	(81,694)	(94,472)
Property, plant and equipment, net	86,255	56,035
Depreciation expense	26,000	21,000	$ 22,100
Computer software
Property, plant and equipment, net
Property, plant and equipment, gross	59,500	51,922
Computer equipment
Property, plant and equipment, net
Property, plant and equipment, gross	36,865	34,484
Leasehold improvements
Property, plant and equipment, net
Property, plant and equipment, gross	32,384	34,120
Machinery
Property, plant and equipment, net
Property, plant and equipment, gross	19,587	14,840
Furniture and fixtures
Property, plant and equipment, net
Property, plant and equipment, gross	12,664	13,328
Construction in progress
Property, plant and equipment, net
Property, plant and equipment, gross	$ 6,949	$ 1,813

Balance Sheet Details (Detail_2

Balance Sheet Details (Details 3) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accumulated other comprehensive income (Loss)
Foreign currency translation adjustments	$ (1,195)	$ (237)
Unrealized gain (loss) on available-for-sale securities, net of tax	(3,768)	(1,215)
Total	$ (4,963)	$ (1,452)

Convertible Notes (Schedule of

Convertible Notes (Schedule of Notes) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Nov. 17, 2017
Debt instrument
Less current portion	$ 10,378	$ 163,687
1.375% Convertible senior notes due 2023 \| Convertible senior notes
Debt instrument
Face value	10,381	172,500	$ 172,500
Unamortized discount	0	(8,266)
Unamortized debt issuance costs	(3)	(547)
Total convertible notes	10,378	163,687
Less current portion	10,378	163,687
Total long-term convertible notes	$ 0	$ 0

Convertible Notes (Interest Exp

Convertible Notes (Interest Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Nov. 17, 2017
Interest expense related to notes
Amortization of discount and debt issuance costs	$ 207	$ 7,656	$ 7,243
Convertible senior notes
Interest expense related to notes
Total interest expense on convertible notes	$ 804	$ 10,028	$ 9,615
Convertible senior notes \| 1.375% Convertible senior notes due 2023
Interest expense related to notes
Convertible notes, stated interest rate (as a percentage)	1.375%	1.375%	1.375%	1.375%
Coupon interest expense	$ 610	$ 2,372	$ 2,372
Amortization of discount and debt issuance costs	$ 194	$ 7,656	$ 7,243

Convertible Notes (Narrative) (

Convertible Notes (Narrative) (Details)							1 Months Ended	3 Months Ended		12 Months Ended
Convertible Notes (Narrative) (Details)	Aug. 25, 2022 $ / shares	Aug. 11, 2022 USD ($)	Apr. 01, 2022 USD ($)	Mar. 31, 2022 USD ($)	Mar. 02, 2022 USD ($)	Nov. 17, 2017 USD ($) D $ / shares	Mar. 29, 2022 $ / shares	Dec. 31, 2022 USD ($) $ / shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($) $ / shares	Jan. 01, 2022 USD ($)
Debt instrument
Liabilities								$ (233,297,000)		$ (233,297,000)	$ (370,250,000)
Accumulated deficit								(513,256,000)		(513,256,000)	(435,227,000)
Loss on extinguishment of debt										83,626,000	0	$ 0
Loss on fair value adjustment of derivatives, net										10,585,000	0	$ 0
Convertible senior notes \| Debt discount \| Cumulative effect, period of adoption, adjustment \| Accounting Standards Update 2020-06
Debt instrument
Additional paid in capital													$ 35,200,000
Liabilities													8,300,000
Accumulated deficit													26,900,000
Convertible senior notes \| Debt issuance costs \| Cumulative effect, period of adoption, adjustment \| Accounting Standards Update 2020-06
Debt instrument
Additional paid in capital													700,000
Accumulated deficit													$ 500,000
1.375% Convertible senior notes due 2023 \| Convertible senior notes
Debt instrument
Face value						$ 172,500,000		$ 10,381,000		$ 10,381,000	$ 172,500,000
Liability component, principal amount						137,300,000
Equity component, principal amount						$ 35,200,000
Debt discount amortization period						5 years
Convertible notes, stated interest rate (as a percentage)						1.375%		1.375%		1.375%	1.375%	1.375%
Debt issuance costs, gross						$ 3,300,000
Debt issuance cost, convertible, liability component						2,600,000
Debt issuance cost, convertible, equity component						$ 700,000
Conversion rate, number of shares to be issued per $1000 of principal (in shares)						52.8318
Principal amount of notes used as the denominator to determine number of shares converted into notes						$ 1,000
Initial conversion price of notes (in dollars per share) \| $ / shares						$ 18.93		$ 18.93		$ 18.93	$ 18.93	$ 18.93
Debt instrument, convertible, threshold trading days						20
Debt Instrument, Convertible, Threshold Consecutive Trading Days \| D						30
Debt instrument, convertible, threshold percentage of stock price trigger						130%
Number of consecutive trading days before the five business days during the debt instrument measurement period						5 days
Denomination of the principal amount of notes used to calculate the percent of trading price during the debt instrument measurement period						$ 1,000
Maximum conversion price as a percentage of closing stock price						98%
Percentage of face amount of debt instrument redeemable at the company's option						100%
Repurchased convertible debt, face amount								$ 162,100,000		$ 162,100,000
Events of default
Period of default in payment of interest (in days)						30 days
Period of default to comply with other agreements (in days)						60 days
Minimum percentage of aggregate outstanding principal required for default event with other agreements						25%
Minimum principal amount of debt nonpayment required for debt default to occur						$ 40,000,000
Period of nonpayment of principal amount required for debt default to occur (in days)						30 days
Minimum percentage of aggregate outstanding principal required for nonpayment of debt default to occur						25%
Minimum percentage of aggregate outstanding principal required for immediate payment declaration to occur						25%
Debt Instrument, Default Percent Of Principal And Accrued And Unpaid Interest						100%
1.375% Convertible senior notes due 2023 \| Convertible senior notes \| 2023 Notes Partial Repurchase, first quarter 2022
Debt instrument
Repayments of Convertible Debt				$ 174,500,000	$ 199,100,000
Repurchased convertible debt, face amount				$ 107,900,000	$ 123,100,000				$ 107,900,000
Debt, Volume Weighted Average Price \| $ / shares							$ 29.6789
Loss on extinguishment of debt									66,500,000
Loss on fair value adjustment of derivatives, net									$ 8,300,000
1.375% Convertible senior notes due 2023 \| Convertible senior notes \| 2023 Notes Partial Repurchase, first quarter 2022 \| Remainder of 2023 Notes Partial Repurchase
Debt instrument
Repayments of Convertible Debt			$ 24,600,000
Repurchased convertible debt, face amount			$ 15,200,000
1.375% Convertible senior notes due 2023 \| Convertible senior notes \| 2023 Notes Partial Repurchase, third quarter 2022
Debt instrument
Repayments of Convertible Debt		$ 58,900,000
Repurchased convertible debt, face amount		$ 39,000,000
Debt, Volume Weighted Average Price \| $ / shares	$ 27.8456
Loss on extinguishment of debt								17,100,000
Loss on fair value adjustment of derivatives, net								$ 2,300,000

Convertible Notes (Narrative)_2

Convertible Notes (Narrative) (Details 2) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions		3 Months Ended		12 Months Ended
	Nov. 14, 2017	Sep. 30, 2022	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Payments for hedge, financing activities	$ 33,500
Derivative, nonmonetary notional amount, shares	9.1
Class of warrant or right, number of securities called by warrants or rights	9.1
Class of warrant or right, exercise price of warrants or rights	$ 23.30
Stock price premium	60%
Share price	$ 14.56
Proceeds from issuance of warrants	$ 23,200
Proceeds from retirement of convertible senior note hedges		$ 19,300	$ 72,400	$ 91,729	$ 0	$ 0
Payments for retirement of warrants		$ (14,400)	$ (55,100)	$ (69,528)	$ 0	$ 0

Convertible Notes (Narrative)_3

Convertible Notes (Narrative) (Details 3) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Nov. 17, 2017	Nov. 14, 2017
Debt instrument
Class of warrant or right, exercise price of warrants or rights					$ 23.30
1.375% Convertible senior notes due 2023 \| Convertible senior notes
Debt instrument
Initial conversion price of notes (in dollars per share)	$ 18.93	$ 18.93	$ 18.93	$ 18.93
Potential incremental common shares attributable to dilutive effect of contingently issuable shares		1.4
Potential cumulative common shares attributable to dilutive effect of conversion of convertible notes payable	0.5

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Nov. 17, 2017
Contractual obligations
2023	[1],[2]	$ 34,553
2024	[1],[2]	19,559
2025	[1],[2]	8,433
2026	[1],[2]	0
2027	[1],[2]	0
Total contractual obligation	[1],[2]	62,545
Unrecognized tax benefit excluding foreign tax withholdings		20,900
Unrecognized tax benefits		$ 164,531	$ 146,215	$ 134,044	$ 115,653
Terms of noncancellable license agreement, minimum (in years)		1 year
1.375% Convertible senior notes due 2023 \| Convertible senior notes
Contractual obligations
Face value		$ 10,381	172,500			$ 172,500
Repurchased convertible debt, face amount		162,100
Long-term deferred tax assets
Contractual obligations
Unrecognized tax benefits		19,600	18,900
Long-term income taxes payable
Contractual obligations
Unrecognized tax benefits		1,300	$ 1,300
Other commitments
Contractual obligations
2023	[1],[2]	3,200
2024	[1],[2]	600
2025	[1],[2]	0
2026	[1],[2]	0
2027	[1],[2]	0
Total contractual obligation	[1],[2]	3,800
Software licenses
Contractual obligations
2023	[1],[2],[3]	18,394
2024	[1],[2],[3]	16,452
2025	[1],[2],[3]	8,083
2026	[1],[2],[3]	0
2027	[1],[2],[3]	0
Total contractual obligation	[1],[2],[3]	42,929
Software licenses \| Engineering development tools \| Other Current Liabilities
Contractual obligations
Total contractual obligation		15,600
Software licenses \| Engineering development tools \| Other Noncurrent Liabilities
Contractual obligations
Total contractual obligation		22,200
Acquisition retention bonuses
Contractual obligations
2023	[1],[2],[4]	2,507
2024	[1],[2],[4]	2,507
2025	[1],[2],[4]	350
2026	[1],[2],[4]	0
2027	[1],[2],[4]	0
Total contractual obligation	[1],[2],[4]	5,364
Convertible senior notes
Contractual obligations
2023	[1],[2],[5]	10,381
2024	[1],[2],[5]	0
2025	[1],[2],[5]	0
2026	[1],[2],[5]	0
2027	[1],[2],[5]	0
Total contractual obligation	[1],[2],[5]	10,381
Interest payments related to convertible notes
Contractual obligations
2023	[1],[2]	71
2024	[1],[2]	0
2025	[1],[2]	0
2026	[1],[2]	0
2027	[1],[2]	0
Total contractual obligation	[1],[2]	$ 71

[1]For the Company’s lease commitments as of December 31, 2022, refer to Note 10, “Leases.”[2]The above table does not reflect possible payments in connection with unrecognized tax benefits of approximately $20.9 million including $19.6 million recorded as a reduction of long-term deferred tax assets and $1.3 million in long-term income taxes payable, as of December 31, 2022. As noted below in Note 18, “Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months, the Company cannot reasonably estimate the outcome at this time.[3]The Company has commitments with various software vendors for agreements generally having terms longer than one year. During the second and fourth quarters of 2022, the Company renewed certain software license agreements for engineering development tools, which are included in the table above. As of December 31, 2022, approximately $15.6 million of the fair value of the liability was included in other current liabilities and $22.2 million was included in other long-term liabilities, in the accompanying consolidated balance sheet.[4]In connection with the acquisition of Northwest Logic, Inc. (“Northwest Logic”) in the third quarter of 2019, the Secure Silicon IP and Protocols business from Verimatrix, formerly Inside Secure, in the fourth quarter of 2019, the acquisitions of AnalogX and PLDA in the third quarter of 2021, and the acquisition of Hardent in the second quarter of 2022, the Company is obligated to pay retention bonuses to certain employees subject to certain eligibility and acceleration provisions including the condition of employment.[5]On November 17, 2017, the Company entered into an Indenture with U.S. Bank National Association, as trustee, relating to the issuance by the Company of $172.5 million aggregate principal amount of the 2023 Notes. During the year ended December 31, 2022, the Company repurchased $162.1 million aggregate principal amount of its 2023 Notes. Refer to Note 12, “Convertible Notes,” for additional information.

Equity Incentive Plans and St_3

Equity Incentive Plans and Stock-Based Compensation (Details) - shares			12 Months Ended
		Apr. 30, 2020	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Potential additional performance stock units
Shares available for grant
Nonvested equity stock and stock units granted (in shares)			600,000		400,000		500,000
Stock compensation plan
Shares available for grant
Shares available, at the beginning of the year			10,492,178		12,412,320		6,826,863
Number of additional shares authorized	[1]						7,800,000
Stock options granted							(40,000)
Stock options forfeited					54,327		101,816
Nonvested equity stock and stock units granted (in shares)	[3]		(4,107,633)	[2]	(3,918,251)	[4]	(3,528,401)	[5]
Nonvested equity stock and stock units forfeited (in shares)	[3]		1,271,224		1,943,782		1,252,042
Shares available, at the end of the period			7,655,769		10,492,178		12,412,320
Conversion factor used to calculate the decrease in the number of shares available for grant resulting from the grant of restricted stock awards			1.5		1.5		1.5
Conversion factor used to calculate the increase in the number of shares available for grant resulting from the forfeiture of restricted stock awards			1.5		1.5		1.5
Stock compensation plan \| 2015 Equity Incentive Plan
Shares available for grant
Number of additional shares authorized		7,800,000

[1]On April 30, 2020, the Company’s stockholders approved an additional 7,800,000 shares for issuance under the 2015 Plan.[2]Amount includes approximately 0.6 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2022 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below.[3]For purposes of determining the number of shares available for grant under the 2015 Plan against the maximum number of shares authorized, each restricted stock granted reduces the number of shares available for grant by 1.5 shares and each restricted stock forfeited increases shares available for grant by 1.5 shares.[4]Amount includes approximately 0.4 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2021 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below[5]Amount includes approximately 0.5 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2020 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below.

Equity Incentive Plans and St_4

Equity Incentive Plans and Stock-Based Compensation (Details 2) - Stock options - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Number of shares
Outstanding as of the beginning of the period	549,581	964,211	1,639,146
Options granted			40,000
Options exercised	(117,138)	(360,303)	(613,119)
Options forfeited		(54,327)	(101,816)
Outstanding as of the end of the period	432,443	549,581	964,211
Vested or expected to vest at the end of the period	432,399
Options exercisable at the end of the period	415,776
Weighted-average exercise price
Outstanding at the beginning of the year	$ 10.71	$ 11.08	$ 11.37
Options granted			15.59
Options exercised (in dollars per share)	7.43	11.06	10.74
Options forfeited (in dollars per share)		14.98	19.41
Outstanding at the end of the period	11.60	$ 10.71	$ 11.08
Vested or expected to vest at the end of the period (in dollars per share)	11.60
Options exercisable at the end of the period (in dollars per share)	$ 11.53
Weighted-average remaining contractual term (in years)
Outstanding	3 years 9 months 18 days
Vested or expected to vest	3 years 9 months 18 days
Options exercisable	3 years 7 months 6 days
Aggregate intrinsic value
Outstanding	$ 10,472
Vested or expected to vest	10,471
Options exercisable	$ 10,097

Equity Incentive Plans and St_5

Equity Incentive Plans and Stock-Based Compensation (Details 3) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock options
Valuation assumptions
Dividend yield			0%
Expected stock price volatility rate			38%
Risk free interest rate			0.20%
Expected term			5 years 6 months
Weighted-average grant-date fair value of stock options granted			$ 5.46
Contingently issuable ESPP shares
Valuation assumptions
Expected stock price volatility rate, minimum	40%	32%	37%
Expected stock price volatility rate, maximum	44%	33%	46%
Risk free interest rate			0.10%
Risk free interest rate, minimum	1.49%	0.04%
Risk free interest rate, maximum	4.58%	0.05%
Expected term	6 months	6 months	6 months
Weighted-average fair value of purchase rights granted under the purchase plan	$ 8.02	$ 5.17	$ 3.46

Equity Incentive Plans and St_6

Equity Incentive Plans and Stock-Based Compensation (Details 4) - Nonvested equity stock and stock units - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Nonvested equity stock and stock units
Nonvested at the beginning of the period (in shares)	4,718,385	4,851,265	5,289,483
Granted (in shares)	2,338,255	2,363,885	1,986,117
Vested (in shares)	(1,853,260)	(1,524,950)	(1,693,659)
Forfeited (in shares)	(485,320)	(971,815)	(730,676)
Nonvested at the end of the period (in shares)	4,718,060	4,718,385	4,851,265
Weighted-average grant-date fair value
Nonvested at the beginning of the period (in dollars per share)	$ 16.62	$ 12.82	$ 11.27
Granted (in dollars per share)	28.10	21.18	15.60
Vested (in dollars per share)	14.42	12.41	11.70
Forfeited (in dollars per share)	20.48	15.30	11.83
Nonvested at the end of the period (in dollars per share)	$ 22.78	$ 16.62	$ 12.82

Equity Incentive Plans and St_7

Equity Incentive Plans and Stock-Based Compensation (Details Narrative)			3 Months Ended	12 Months Ended
		Apr. 30, 2020 shares	Sep. 30, 2019 shares	Dec. 31, 2022 USD ($) plan $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 shares
Stock-Based Compensation
Tenure of award				10 years
Minimum
Stock-Based Compensation
Awards, vesting rights				0%
Maximum
Stock-Based Compensation
Awards, vesting rights				200%
Option One
Stock-Based Compensation
Requisite service period				60 months
Option Two
Stock-Based Compensation
Requisite service period				48 months
Stock compensation plan
Stock-Based Compensation
Number of additional shares authorized \| shares	[1]					7,800,000
Shares available for issuance \| shares				7,655,769	10,492,178	12,412,320	6,826,863
Options granted \| shares						40,000
Stock compensation plan \| 2019 Inducement Equity Incentive Plan
Stock-Based Compensation
Number of additional shares authorized \| shares			400,000
Contingently issuable ESPP shares
Stock-Based Compensation
Number of additional shares authorized \| shares		2,000,000
Number of employee stock purchase plans \| plan				1
Minimum number of hours of weekly employment in order to qualify for eligibility in the plan				20 hours
Minimum number of months of employment in a fiscal year in order to qualify for eligibility in the plan				5 months
Offering period				6 months
Percentage of the price at the beginning of the offering period or price at the end of each offering period to derive purchase price				85%
Maximum share value per employee in any calendar year \| $				$ 25,000
Employee stock purchase plan, shares issued during period \| shares				255,614	384,087	467,065
Employee stock purchase plan, weighted-average price per share \| $ / shares				$ 20.60	$ 12.95	$ 10.51
Shares available for issuance \| shares				2,600,000
Stock-based compensation expense \| $				$ 1,700,000	$ 1,400,000	$ 1,500,000
Unrecognized compensation cost \| $				$ 800,000
Unrecognized compensation cost, weighted-average period				4 months
Stock options
Stock-Based Compensation
Options granted \| shares						40,000
Stock-based compensation expense \| $				$ 100,000	400,000	$ 600,000
Unrecognized compensation cost \| $				$ 100,000
Unrecognized compensation cost, weighted-average period				9 months 18 days
Total fair value of options vested \| $				$ 1,700,000	$ 2,000,000	$ 3,300,000
Nonvested equity stock and stock units
Stock-Based Compensation
Requisite service period				4 years	4 years	4 years
Stock-based compensation expense \| $				$ 33,800,000	$ 25,700,000	$ 23,700,000
Unrecognized compensation cost \| $				$ 63,500,000
Unrecognized compensation cost, weighted-average period				2 years 1 month 6 days
Awards, nonvested grants in period, shares \| shares				2,338,255	2,363,885	1,986,117
Awards, nonvested grants in period, fair value \| $				$ 65,600,000	$ 50,100,000	$ 31,000,000
Nonvested equity stock and stock units \| Director
Stock-Based Compensation
Requisite service period				1 year	1 year	1 year

[1]On April 30, 2020, the Company’s stockholders approved an additional 7,800,000 shares for issuance under the 2015 Plan.

Stockholders' Equity (Details)

Stockholders' Equity (Details) - 2020 Share repurchase program - shares	Dec. 31, 2022	Oct. 29, 2020
Class of stock
Number of shares authorized to be repurchased under the plan		20,000,000
Remaining number of shares authorized to be repurchased	9,700,000

Stockholders' Equity (Details 2

Stockholders' Equity (Details 2) - USD ($) $ in Thousands, shares in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Class of stock
Repurchase and retirement of common stock under repurchase plan, value						$ (100,421)	$ (100,081)	$ (50,069)
Accumulated deficit
Class of stock
Repurchase and retirement of common stock under repurchase plan, value						$ (90,140)	$ (95,810)	$ (31,491)
2020 Accelerated share repurchase program
Class of stock
Accelerated share repurchase program, upfront payment					$ 50,000
Repurchase and retirement of common stock under repurchase plan, shares				(0.1)	(2.6)
Repurchase and retirement of common stock under repurchase plan, value					$ (40,000)
Remaining initial payment, unsettled forward contract indexed to Company's stock					$ 10,000
2021 Accelerated share repurchase program
Class of stock
Accelerated share repurchase program, upfront payment				$ 100,000
Repurchase and retirement of common stock under repurchase plan, shares			(0.4)	(3.9)
Repurchase and retirement of common stock under repurchase plan, value				$ (80,000)
Remaining initial payment, unsettled forward contract indexed to Company's stock				$ 20,000
2022 Accelerated Share Repurchase Program [Domain]
Class of stock
Accelerated share repurchase program, upfront payment		$ 100,000
Repurchase and retirement of common stock under repurchase plan, shares	(0.1)	(3.1)
Repurchase and retirement of common stock under repurchase plan, value		$ (80,000)
Remaining initial payment, unsettled forward contract indexed to Company's stock		$ 20,000

Benefit Plans (Details)

Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
Benefit Plans (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Employee contribution limit per calendar year to 401(k) Plan (as a percentage of compensation)	60%
Employer match of employee contributions of first 6% of eligible compensation (as a percentage)	50%
Employer match of employee's gross pay (as a percentage of compensation)	6%
Employer contribution	$ 1.9	$ 1.8	$ 1.8

Restructuring Charges (Details)

Restructuring Charges (Details) $ in Thousands	12 Months Ended
Restructuring Charges (Details) $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Restructuring and related costs, positions eliminated
Restructuring and other charges	$ 0	$ 368	$ 4,089
2020 Plan
Restructuring and related costs, positions eliminated
Restructuring, number of positions eliminated			70
Restructuring and other charges		$ 400	$ 3,300

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income before taxes
Domestic	$ (16,663)	$ 19,244	$ (39,937)
Foreign	8,838	4,042	3,398
Income (loss) before income taxes	$ (7,825)	$ 23,286	$ (36,539)

Income Taxes (Details 2)

Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Federal:
Current	$ 183	$ (112)	$ (446)
Deferred	2,479	2,042	2,018
State:
Current	(215)	214	657
Deferred	24	324	(1,589)
Foreign:
Current	5,828	3,328	3,097
Deferred	(1,814)	(844)	195
Provision for income taxes	$ 6,485	$ 4,952	$ 3,932

Income Taxes (Details 3)

Income Taxes (Details 3)	12 Months Ended
Income Taxes (Details 3)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Effective income tax rate reconciliation
Expense (benefit) at U.S. federal statutory rate (as a percentage)	21%	21%	21%
Expense (benefit) at state statutory rate (as a percentage)	6.10%	2.20%	(2.50%)
Withholding tax (as a percentage)	(36.60%)	4.40%	(4.10%)
Foreign rate differential (as a percentage)	(28.30%)	3.30%	(4.80%)
Research and development credit (as a percentage)	4.80%	(7.10%)	(4.80%)
Executive compensation (as a percentage)	(49.00%)	6.60%	(1.80%)
Stock-based compensation (as a percentage)	47.90%	(7.70%)	0.60%
Foreign tax credit (as a percentage)	57.40%	(84.00%)	(89.50%)
Foreign-derived intangible income deduction (as a percentage)	70.50%	(55.80%)	13.70%
Divestiture (as a percentage)	0%	0%	(20.40%)
Acquisition (as a percentage)	(25.10%)	8.80%	0%
Debt extinguishment (as a percentage)	(226.70%)	0%	0%
Other (as a percentage)	(1.00%)	(0.20%)	0.80%
Valuation allowance (as a percentage)	76.10%	129.80%	81%
Effective income tax rate reconciliation (as a percentage)	(82.90%)	21.30%	(10.80%)

Income Taxes (Details 4)

Income Taxes (Details 4) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Components of net deferred tax assets (liabilities)
Depreciation and amortization	$ 3,247	$ 6,578
Lease liabilities	7,691	7,873
Other timing differences, accruals and reserves	10,393	5,747
Deferred equity compensation	4,366	5,077
Net operating loss carryovers	13,423	14,602
Capitalized research	49,649	22,301
Tax credits	96,758	130,348
Total gross deferred tax assets	185,527	192,526
Lease right-of-use assets	(5,501)	(5,323)
Deferred revenue	(76)	(267)
Total gross deferred tax liabilities	(5,577)	(5,590)
Total net deferred tax assets before valuation allowance	179,950	186,936
Valuation allowance	(201,883)	(206,874)
Net deferred tax liabilities	$ (21,933)	$ (19,938)

Income Taxes (Details 5)

Income Taxes (Details 5) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Deferred Income Tax Assets, Net	$ 3,031	$ 4,047
Non-current deferred tax liabilities	(24,964)	(23,985)
Net deferred tax liabilities	$ (21,933)	$ (19,938)

Income Taxes (Details 6)

Income Taxes (Details 6) - Tax Valuation Allowance - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Changes in valuation and qualifying accounts
Balance at beginning of period	$ 206,874	$ 174,119	$ 196,098
Charged (credited) to operations	(7,233)	32,544	(21,294)
Charged to other account	2,242	211	3
Valuation allowance release	0	0	(688)
Balance at end of period	$ 201,883	$ 206,874	$ 174,119

Income Taxes (Details 7)

Income Taxes (Details 7) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Details 7) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of the beginning and ending amounts of unrecognized income tax benefits
Balance at beginning of the period	$ 146,215	$ 134,044	$ 115,653
Tax positions related to current year:
Additions	18,515	18,748	18,600
Tax positions related to prior years:
Additions	0	615	0
Reductions	(199)	(1,586)	(209)
Settlements	0	(5,606)	0
Balance at end of the period	$ 164,531	$ 146,215	$ 134,044

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating loss and tax credit carryforwards
Unrecognized tax benefits	$ 164,531	$ 146,215	$ 134,044	$ 115,653
State and local tax authority \| California Franchise Tax Board
Operating loss and tax credit carryforwards
Operating loss carryforwards	191,700
Tax credit carryforwards, alternative minimum tax credit	300
State and local tax authority \| Other
Operating loss and tax credit carryforwards
Operating loss carryforwards	800
Research and development tax credit carryforward \| Federal
Operating loss and tax credit carryforwards
Tax credit carryforwards	41,800
Research and development tax credit carryforward \| State and local tax authority \| California Franchise Tax Board
Operating loss and tax credit carryforwards
Tax credit carryforwards	25,600
Foreign tax credit
Operating loss and tax credit carryforwards
Tax credit carryforwards	51,200
Foreign tax credit \| Federal
Operating loss and tax credit carryforwards
Tax credit carryforward, subject to expiration	$ 10,800

Income Taxes (Narrative) (Det_2

Income Taxes (Narrative) (Details 2) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income tax contingencies
Unrecognized tax benefits	$ 164,531	$ 146,215	$ 134,044	$ 115,653
Portion of unrecognized tax benefits, which if recognized, would be recorded as an income tax benefit	144,900
Long-term deferred tax assets
Income tax contingencies
Unrecognized tax benefits	19,600	18,900
Other assets \| Foreign tax authority \| National Tax Services
Income tax contingencies
Unrecognized tax benefits	143,600	126,100
Long-term income taxes payable
Income tax contingencies
Unrecognized tax benefits	$ 1,300	$ 1,300

Income Taxes (Narrative) (Det_3

Income Taxes (Narrative) (Details 3) $ in Millions	Dec. 31, 2022 USD ($)
Income Tax Disclosure [Abstract]
Undistributed foreign earnings	$ 32.3
Undistributed foreign earnings, estimated foreign withholding taxes	$ 2.4

Acquisitions Acquisition (Consi

Acquisitions Acquisition (Consideration Transferred) (Details) - USD ($) shares in Millions, $ in Millions	May 20, 2022	Aug. 18, 2021	Jul. 02, 2021
Hardent, Inc.
Business acquisition
Total consideration	$ 16.1
Total consideration transferred	14.7
Hardent, Inc. \| Indemnification Obligations
Business acquisition
Escrow deposit	$ 1.2
Escrow release term	18 months
Hardent, Inc. \| Other Contractual Provisions
Business acquisition
Escrow deposit	$ 0.2
AnalogX, Inc.
Business acquisition
Total consideration			$ 47.5
Total consideration transferred			40.4
Deferred payments, total			7.4
Deferred payments, fair value			7.1
Escrow deposit			$ 5.9
Escrow release term			12 months
PLDA Group
Business acquisition
Total consideration		$ 85.6
Total consideration transferred		$ 67.1
Shares issued related to business acquisition (in shares)		0.3
Shares issued related to business acquisition, fair value		$ 6.9
Additional consideration subject to certain revenue targets, fair value		16.9
Escrow deposit		$ 10
Escrow release term		24 months
PLDA Group \| Maximum
Business acquisition
Additional consideration subject to certain revenue targets		$ 21

Acquisitions Acquisition (Purch

Acquisitions Acquisition (Purchase Price Allocation) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	May 20, 2022	Dec. 31, 2021	Aug. 18, 2021	Jul. 02, 2021	Dec. 31, 2020
Business acquisition
Goodwill	$ 292,040		$ 278,810			$ 183,222
Hardent, Inc.
Business acquisition
Cash and cash equivalents		$ 209
Accounts receivable		1,088
Unbilled receivables		239
Prepaid expenses and other current assets		16
Identified intangible assets		5,000
Goodwill		12,069
Accounts payable		(55)
Deferred revenue		(578)
Income taxes payable		(466)
Deferred tax liability		(1,325)
Other current liabilities		(56)
Recognized identifiable assets acquired and liabilities assumed, net		$ 16,141
AnalogX, Inc.
Business acquisition
Cash and cash equivalents					$ 2,763
Accounts receivable					280
Unbilled receivables					1,566
Prepaid expenses and other current assets					1,354
Identified intangible assets					6,800
IPR&D					3,800
Goodwill					39,309
Property, plant and equipment, net					118
Accounts payable					(1,112)
Deferred revenue					(23)
Income taxes payable					(7,127)
Other current liabilities					(215)
Recognized identifiable assets acquired and liabilities assumed, net					$ 47,513
PLDA Group
Business acquisition
Cash and cash equivalents				$ 5,820
Accounts receivable				2,233
Inventories				125
Prepaid expenses and other current assets				836
Identified intangible assets				21,400
IPR&D				7,400
Goodwill				57,543
Property, plant and equipment, net				679
Operating lease right-of-use assets				864
Other asset				339
Accounts payable				(1,046)
Accrued salaries and benefits				(814)
Deferred revenue				(514)
Income taxes payable				(118)
Operating lease liability				(852)
Deferred tax liability				(8,180)
Other current liabilities				(74)
Recognized identifiable assets acquired and liabilities assumed, net				$ 85,641

Acquisitions Acquisitions (Inta

Acquisitions Acquisitions (Intangible Assets Acquired as Part of Business Combination) (Details) - USD ($) $ in Thousands				12 Months Ended
	May 20, 2022	Aug. 18, 2021	Jul. 02, 2021	Dec. 31, 2022	Dec. 31, 2021
Minimum
Identified intangible assets assumed in the acquisitions
Useful life (in years)				6 months
Maximum
Identified intangible assets assumed in the acquisitions
Useful life (in years)				10 years
Existing technology
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed, weighted-average useful life				5 years
Existing technology \| Minimum
Identified intangible assets assumed in the acquisitions
Useful life (in years)				3 years	3 years
Existing technology \| Maximum
Identified intangible assets assumed in the acquisitions
Useful life (in years)				10 years	10 years
Customer contracts and contractual relationships \| Minimum
Identified intangible assets assumed in the acquisitions
Useful life (in years)				6 months	6 months
Customer contracts and contractual relationships \| Maximum
Identified intangible assets assumed in the acquisitions
Useful life (in years)				10 years	10 years
Hardent, Inc.
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed	$ 5,000
Hardent, Inc. \| Existing technology
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed	$ 4,800
Identified intangible assets assumed, weighted-average useful life	5 years
Hardent, Inc. \| Customer contracts and contractual relationships
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed	$ 200
Identified intangible assets assumed, weighted-average useful life	2 years
AnalogX, Inc.
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed			$ 10,600
Indefinite-lived intangible assets acquired			3,800
AnalogX, Inc. \| Existing technology
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed			$ 6,300
Identified intangible assets assumed, weighted-average useful life			5 years
AnalogX, Inc. \| Customer contracts and contractual relationships
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed			$ 500
Identified intangible assets assumed, weighted-average useful life			2 years
AnalogX, Inc. \| In-process research and development \| Minimum
Identified intangible assets assumed in the acquisitions
Useful life (in years)			3 years
AnalogX, Inc. \| In-process research and development \| Maximum
Identified intangible assets assumed in the acquisitions
Useful life (in years)			5 years
PLDA Group
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed		$ 28,800
Indefinite-lived intangible assets acquired		7,400
PLDA Group \| Existing technology
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed		$ 20,400
PLDA Group \| Existing technology \| Minimum
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed, weighted-average useful life		3 years
PLDA Group \| Existing technology \| Maximum
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed, weighted-average useful life		5 years
PLDA Group \| Customer contracts and contractual relationships
Identified intangible assets assumed in the acquisitions
Identified intangible assets assumed		$ 1,000
Identified intangible assets assumed, weighted-average useful life		2 years
PLDA Group \| In-process research and development \| Minimum
Identified intangible assets assumed in the acquisitions
Useful life (in years)		3 years
PLDA Group \| In-process research and development \| Maximum
Identified intangible assets assumed in the acquisitions
Useful life (in years)		5 years

Acquisitions Acquisitions (Pro

Acquisitions Acquisitions (Pro Forma Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Hardent, Inc.
Pro forma financial information, nonrecurring adjustment
Pro forma financial information, revenue	$ 457,852	$ 336,258
Pro forma financial information, net income (loss)	(13,251)	19,452
AnalogX, Inc and PLDA Group
Pro forma financial information, nonrecurring adjustment
Pro forma financial information, revenue	338,961	267,006
Pro forma financial information, net income (loss)	$ 16,533	$ (33,871)

Acquisitions Acquisition (Addit

Acquisitions Acquisition (Additional Information) (Details) - USD ($) $ in Thousands					12 Months Ended
		May 20, 2022	Aug. 18, 2021	Jul. 02, 2021	Dec. 31, 2022	Dec. 31, 2021
Business acquisition
Contractual obligation	[1],[2]				$ 62,545
Acquisition retention bonuses
Business acquisition
Contractual obligation	[1],[2],[3]				5,364
Hardent, Inc.
Business acquisition
Total consideration		$ 16,100
Total consideration transferred		14,700
Acquisition-related costs					1,200
Hardent, Inc. \| Acquisition-related Costs
Business acquisition
Pro forma financial information, adjustment, acquisition-related costs					$ 1,200
Hardent, Inc. \| Acquisition retention bonuses \| Annually
Business acquisition
Contractual obligation		1,200
Hardent, Inc. \| Indemnification Obligations
Business acquisition
Escrow deposit		$ 1,200
Escrow release term		18 months
Hardent, Inc. \| Other Contractual Provisions
Business acquisition
Escrow deposit		$ 200
AnalogX, Inc.
Business acquisition
Total consideration				$ 47,500
Total consideration transferred				40,400
Escrow deposit				$ 5,900
Escrow release term				12 months
Acquisition-related costs				$ 800
Goodwill expected to be tax deductible				26,900
AnalogX, Inc. \| Acquisition retention bonuses
Business acquisition
Contractual obligation				$ 3,500
PLDA Group
Business acquisition
Total consideration			$ 85,600
Total consideration transferred			67,100
Escrow deposit			$ 10,000
Escrow release term			24 months
Acquisition-related costs			$ 1,400
PLDA Group \| Acquisition retention bonuses
Business acquisition
Contractual obligation			$ 3,000
AnalogX, Inc and PLDA Group \| Acquisition-related Costs
Business acquisition
Pro forma financial information, adjustment, acquisition-related costs						$ 2,200

[1]For the Company’s lease commitments as of December 31, 2022, refer to Note 10, “Leases.”[2]The above table does not reflect possible payments in connection with unrecognized tax benefits of approximately $20.9 million including $19.6 million recorded as a reduction of long-term deferred tax assets and $1.3 million in long-term income taxes payable, as of December 31, 2022. As noted below in Note 18, “Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months, the Company cannot reasonably estimate the outcome at this time.[3]In connection with the acquisition of Northwest Logic, Inc. (“Northwest Logic”) in the third quarter of 2019, the Secure Silicon IP and Protocols business from Verimatrix, formerly Inside Secure, in the fourth quarter of 2019, the acquisitions of AnalogX and PLDA in the third quarter of 2021, and the acquisition of Hardent in the second quarter of 2022, the Company is obligated to pay retention bonuses to certain employees subject to certain eligibility and acceleration provisions including the condition of employment.

Subsequent Event (Details)

Subsequent Event (Details) - 1.375% Convertible senior notes due 2023 - Convertible senior notes - Subsequent event - Forecast shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) shares
Subsequent event
Repayment of debt \| $	$ 10.4
Stock issued for settlement of convertible debt (in shares) \| shares	0.3