Harmonic (HLIT) 10-Q5 Aug 222022 Q2 Quarterly reportFinancial data

Company Profile

Cover

Cover - shares	6 Months Ended
Cover - shares	Jul. 01, 2022	Aug. 01, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jul. 01, 2022
Document Transition Report	false
Entity File Number	000-25826
Entity Registrant Name	HARMONIC INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0201147
Entity Address, Address Line One	2590 Orchard Parkway
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95131
City Area Code	408
Local Phone Number	542-2500
Title of 12(b) Security	Common stock, $0.001 par value
Trading Symbol	HLIT
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		105,059,780
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000851310
Current Fiscal Year End Date	--12-31

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 01, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 121,819	$ 133,431
Accounts receivable, net	106,351	88,529
Inventories	82,636	71,195
Prepaid expenses and other current assets	27,620	29,972
Total current assets	338,426	323,127
Property and equipment, net	41,604	42,721
Operating lease right-of-use assets	27,183	30,968
Other non-current assets	54,315	56,657
Goodwill	236,931	240,213
Total assets	698,459	693,686
Current liabilities:
Convertible debt, current	37,588	36,824
Other debts, current	4,717	4,992
Accounts payable	38,515	64,429
Deferred revenue	74,599	57,226
Operating lease liabilities, current	6,950	7,346
Other current liabilities	59,615	53,644
Total current liabilities	221,984	224,461
Convertible debt, non-current	113,541	98,941
Other debts, non-current	11,060	12,989
Operating lease liabilities, non-current	25,885	29,120
Other non-current liabilities	29,153	31,379
Total liabilities	401,623	396,890
Commitments and contingencies (Note 12)
Convertible debt (Note 7)	0	883
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value, 150,000 shares authorized; 105,061 and 102,959 shares issued and outstanding at July 1, 2022 and December 31, 2021, respectively	105	103
Additional paid-in capital	2,371,001	2,387,039
Accumulated deficit	(2,061,320)	(2,087,957)
Accumulated other comprehensive loss	(12,950)	(3,272)
Total stockholders’ equity	296,836	295,913
Total liabilities and stockholders’ equity	$ 698,459	$ 693,686

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares shares in Thousands	Jul. 01, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000	5,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	150,000	150,000
Common stock, shares issued (in shares)	105,061	102,959
Common stock, shares outstanding (in shares)	105,061	102,959

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Total net revenue	$ 157,446	$ 113,448	$ 304,885	$ 225,024
Total cost of revenue	75,045	52,943	153,302	109,374
Total gross profit	82,401	60,505	151,583	115,650
Operating expenses:
Research and development	29,920	24,783	58,753	48,311
Selling, general and administrative	36,768	33,586	73,411	68,497
Amortization of intangibles	0	0	0	507
Restructuring and related charges	631	0	1,801	43
Total operating expenses	67,319	58,369	133,965	117,358
Income (loss) from operations	15,082	2,136	17,618	(1,708)
Interest expense, net	(1,394)	(2,630)	(2,827)	(5,233)
Other income (expense), net	4,274	(147)	4,336	872
Income (loss) before income taxes	17,962	(641)	19,127	(6,069)
Provision for income taxes	3,122	1,368	5,816	2,064
Net income (loss)	$ 14,840	$ (2,009)	$ 13,311	$ (8,133)
Net income (loss) per share:
Basic (in dollars per share)	$ 0.14	$ (0.02)	$ 0.13	$ (0.08)
Diluted (in dollars per share)	$ 0.14	$ (0.02)	$ 0.12	$ (0.08)
Weighted average shares outstanding:
Basic (in shares)	104,630	101,218	104,312	100,539
Diluted (in shares)	108,984	101,218	109,774	100,539
Appliance and integration
Total net revenue	$ 121,868	$ 78,598	$ 234,852	$ 158,574
Total cost of revenue	62,341	40,365	128,723	82,984
SaaS and service
Total net revenue	35,578	34,850	70,033	66,450
Total cost of revenue	$ 12,704	$ 12,578	$ 24,579	$ 26,390

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 14,840	$ (2,009)	$ 13,311	$ (8,133)
Other comprehensive income (loss) before tax:
Change in foreign currency translation adjustments	(7,608)	783	(9,310)	(2,930)
Other comprehensive income (loss) before tax	(7,608)	783	(9,310)	(2,930)
Provision for (benefit from) income taxes	305	(57)	368	211
Other comprehensive income (loss), net of tax	(7,913)	840	(9,678)	(3,141)
Total comprehensive income (loss)	$ 6,927	$ (1,169)	$ 3,633	$ (11,274)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative Effect, Period of Adoption, Adjusted Balance
Beginning balance (in shares) at Dec. 31, 2020				98,204
Beginning balance at Dec. 31, 2020	$ 258,302			$ 98		$ 2,353,559			$ (2,101,211)			$ 5,856
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(8,133)								(8,133)
Other comprehensive income (loss), net of tax	(3,141)											(3,141)
Issuance of common stock under stock option, award and purchase plans (in shares)				3,590
Issuance of common stock under stock option, award and purchase plans	7,875			$ 4		7,871
Stock-based compensation	12,421					12,421
Ending balance (in shares) at Jul. 02, 2021				101,794
Ending balance at Jul. 02, 2021	267,324			$ 102		2,373,851			(2,109,344)			2,715
Beginning balance (in shares) at Dec. 31, 2020				98,204
Beginning balance at Dec. 31, 2020	$ 258,302			$ 98		2,353,559			(2,101,211)			5,856
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	ASU 2020-06
Ending balance (in shares) at Dec. 31, 2021	102,959			102,959	102,959
Ending balance at Dec. 31, 2021	$ 295,913	$ (13,910)	$ 282,003	$ 103	$ 103	2,387,039	$ (32,249)	$ 2,354,790	(2,087,957)	$ 18,339	$ (2,069,618)	(3,272)	$ (3,272)
Beginning balance (in shares) at Apr. 02, 2021				100,993
Beginning balance at Apr. 02, 2021	259,770			$ 101		2,365,129			(2,107,335)			1,875
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2,009)								(2,009)
Other comprehensive income (loss), net of tax	840											840
Issuance of common stock under stock option, award and purchase plans (in shares)				801
Issuance of common stock under stock option, award and purchase plans	3,100			$ 1		3,099
Stock-based compensation	4,059					4,059
Reclassification from mezzanine equity to equity for 2022 Notes	1,564					1,564
Ending balance (in shares) at Jul. 02, 2021				101,794
Ending balance at Jul. 02, 2021	$ 267,324			$ 102		2,373,851			(2,109,344)			2,715
Beginning balance (in shares) at Dec. 31, 2021	102,959			102,959	102,959
Beginning balance at Dec. 31, 2021	$ 295,913	$ (13,910)	$ 282,003	$ 103	$ 103	2,387,039	$ (32,249)	$ 2,354,790	(2,087,957)	$ 18,339	$ (2,069,618)	(3,272)	$ (3,272)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	13,311								13,311
Other comprehensive income (loss), net of tax	(9,678)											(9,678)
Issuance of common stock under stock option, award and purchase plans (in shares)				2,659
Issuance of common stock under stock option, award and purchase plans	3,047			$ 2		3,045
Repurchase of common stock (in shares)				(557)
Repurchase of common stock	(5,013)			$ (5,000)					(5,013)
Stock-based compensation	$ 13,166					13,166
Ending balance (in shares) at Jul. 01, 2022	105,061			105,061
Ending balance at Jul. 01, 2022	$ 296,836			$ 105		2,371,001			(2,061,320)			(12,950)
Beginning balance (in shares) at Apr. 01, 2022				104,603
Beginning balance at Apr. 01, 2022	284,653			$ 105		2,362,873			(2,073,288)			(5,037)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	14,840								14,840
Other comprehensive income (loss), net of tax	(7,913)											(7,913)
Issuance of common stock under stock option, award and purchase plans (in shares)				782
Issuance of common stock under stock option, award and purchase plans	2,773					2,773
Repurchase of common stock (in shares)				(324)
Repurchase of common stock	(2,872)								(2,872)
Stock-based compensation	$ 5,355					5,355
Ending balance (in shares) at Jul. 01, 2022	105,061			105,061
Ending balance at Jul. 01, 2022	$ 296,836			$ 105		$ 2,371,001			$ (2,061,320)			$ (12,950)

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021
Cash flows from operating activities:
Net income (loss)	$ 13,311	$ (8,133)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	6,128	6,164
Amortization of intangibles	0	507
Stock-based compensation	13,161	12,429
Amortization of convertible debt discount	596	3,093
Amortization of warrant	863	863
Foreign currency remeasurement	(1,680)	(1,897)
Deferred income taxes	1,401	981
Provision for expected credit losses and returns	1,648	2,230
Provision for excess and obsolete inventories	3,805	1,004
Gains on sale of investment in equity securities	(4,370)	0
Other adjustments	338	111
Changes in operating assets and liabilities:
Accounts receivable	(21,386)	(36,709)
Inventories	(15,429)	(8,825)
Other assets	(1,367)	882
Accounts payable	(23,355)	14,544
Deferred revenues	16,393	15,553
Other liabilities	4,287	15,642
Net cash provided by (used in) operating activities	(5,656)	18,439
Cash flows from investing activities:
Proceeds from sale of investment	7,962	0
Purchases of property and equipment	(5,504)	(7,685)
Net cash provided by (used in) investing activities	2,458	(7,685)
Cash flows from financing activities:
Repurchase of common stock	(5,013)	0
Proceeds from other debts	3,499	3,772
Repayment of other debts	(4,393)	(5,401)
Proceeds from common stock issued to employees	6,130	9,068
Payment of tax withholding obligations related to net share settlements of restricted stock units	(3,083)	(1,194)
Net cash provided by (used in) financing activities	(2,860)	6,245
Effect of exchange rate changes on cash and cash equivalents	(5,554)	(467)
Net increase (decrease) in cash and cash equivalents	(11,612)	16,532
Cash and cash equivalents at beginning of period	133,431	98,645
Cash and cash equivalents at end of period	121,819	115,177
Supplemental schedule of non-cash investing activities:
Capital expenditures incurred but not yet paid	$ 624	$ 1,140

BASIS OF PRESENTATION

BASIS OF PRESENTATION	6 Months Ended
BASIS OF PRESENTATION	Jul. 01, 2022
Accounting Policies [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION The condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information. In the opinion of management, the unaudited condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments) necessary for a fair presentation of the Company's financial position as of balance sheet dates and its operating results and cash flows for the interim periods presented. Operating results for the three and six month periods ended July 1, 2022 are not necessarily indicative of the results that may be expected for any subsequent quarter or for the fiscal year ending December 31, 2022. These unaudited condensed consolidated financial statements should be read in conjunction with the Company's audited consolidated financial statements and notes included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2021. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Certain prior period balances have been reclassified to conform to the current period’s presentation. These reclassifications did not have a material impact on previously reported financial statements. The Company’s significant accounting policies are described in Note 2 to its audited Consolidated Financial Statements included in the 2021 Form 10-K. There have been no significant changes to these policies during the six months ended July 1, 2022.

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS	6 Months Ended
RECENT ACCOUNTING PRONOUNCEMENTS	Jul. 01, 2022
Accounting Changes and Error Corrections [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS In August 2020, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2020-06, Accounting for Convertible Instruments in an Entity’s Own Equity, which simplifies the accounting for convertible instruments and contracts on an entity’s own equity. The Company adopted ASU 2020-06 effective on January 1, 2022, using the modified retrospective method. Among other changes, ASU 2020-06 removes from U.S. GAAP the liability and equity separation model for convertible instruments with a cash conversion feature. As a result, the Company no longer separately presents in equity an embedded conversion feature for such debt. Similarly, the embedded conversion feature is no longer amortized into income as interest expense over the life of the instrument. The cumulative effect of the ASU adoption was as follows: Adjustments from Balance at Adoption of Balance at (in thousands) December 31, 2021 ASU 2020-06 January 1, 2022 Liabilities Convertible debt, current $ 36,824 $ 626 $ 37,450 Convertible debt, non-current 98,941 14,167 113,108 Mezzanine equity Convertible debt 883 (883) — Equity Additional paid-capital 2,387,039 (32,249) 2,354,790 Accumulated deficit (2,087,957) 18,339 (2,069,618) The impact of ASU adoption on the consolidated statement of operations for the three and six months ended July 1, 2022 was to decrease net interest expense by $1.4 million and $2.7 million, respectively. This had the effect of increasing the basic and diluted net income per share for the three and six months ended July 1, 2022 by approximately $0.01 and $0.03, respectively. The required use of if-converted method to calculate the impact of convertible notes on diluted earnings per share does not have a material impact. The Company is contractually required to settle the principal amount of 2022 Notes and 2024 Notes in cash. Accordingly, the dilutive effect of the Company's 2022 Notes and 2024 Notes will be limited to the conversion premium. The adoption of this ASU does not have any impact on the consolidated statement of cash flows. From time to time, new accounting pronouncements are issued by the FASB, or other standards setting bodies, that are adopted by the Company as of the specified effective date. Unless otherwise discussed, the Company believes the impact of recently issued standards that are not yet effective will not have a material impact on its consolidated financial position, results of operations and cash flows upon adoption.

INVESTMENTS IN EQUITY SECURITIE

INVESTMENTS IN EQUITY SECURITIES	6 Months Ended
INVESTMENTS IN EQUITY SECURITIES	Jul. 01, 2022
Investments, Debt and Equity Securities [Abstract]
INVESTMENTS IN EQUITY SECURITIES	INVESTMENTS IN EQUITY SECURITIES In May 2022, the Company sold its investment in Encoding.com, Inc. for total consideration of up to approximately $10.7 million. The Company received $7.8 million in May 2022 and recognized a gain of $4.2 million. The balance of the consideration of up to approximately $2.9 million will be payable to the Company within 18 months from the date of sale, subject to certain conditions and indemnity obligations, and will be recorded upon receipt by the Company.

CONTRACT ASSETS AND DEFERRED RE

CONTRACT ASSETS AND DEFERRED REVENUE	6 Months Ended
CONTRACT ASSETS AND DEFERRED REVENUE	Jul. 01, 2022
Revenue from Contract with Customer [Abstract]
CONTRACT ASSETS AND DEFERRED REVENUE	CONTRACT ASSETS AND DEFERRED REVENUE Contract assets exist when the Company has satisfied a performance obligation but does not have an unconditional right to consideration (e.g., because the entity first must satisfy another performance obligation in the contract before it is entitled to invoice the customer). Deferred revenue represents the Company’s obligation to transfer goods or services to a customer for which the Company has received consideration (or an amount of consideration is due) from the customer. Contract assets and deferred revenue consisted of the following: As of (in thousands) July 1, 2022 December 31, 2021 Contract assets $ 4,737 $ 8,101 Deferred revenue $ 94,199 $ 78,167 Contract assets and the non-current portion of Deferred revenue are reported as components of “Prepaid expenses and other current assets” and “Other non-current liabilities,” respectively, on the Condensed Consolidated Balance Sheets. Revenue recognized during the three months ended July 1, 2022 and July 2, 2021, that was included in the deferred revenue balances at December 31, 2021 and 2020 was $11.3 million and $8.6 million, respectively. Revenue recognized during the six months ended July 1, 2022 and July 2, 2021, that was included in the deferred revenue balances at December 31, 2021 and 2020, was $34.8 million and $39.2 million, respectively. Remaining performance obligations represent contracted revenues that had not yet been recognized and future revenue recognition is expected. The aggregate balance of the Company’s remaining performance obligations as of July 1, 2022 was $497.9 million, of which approximately 83% is expected to be recognized as revenue over the next 12 months and the remainder thereafter. Refer to Note 11, “Segment Information” for disaggregated revenue information.

LEASES

LEASES	6 Months Ended
LEASES	Jul. 01, 2022
Leases [Abstract]
LEASES	LEASES The components of lease expense are as follows: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Operating lease cost $ 2,148 $ 1,877 $ 4,035 $ 3,743 Variable lease cost 431 518 892 1,027 Total lease cost $ 2,579 $ 2,395 $ 4,927 $ 4,770 Supplemental information related to leases are as follows: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Cash paid for amounts included in the measurement of operating lease liabilities $ 1,962 $ 1,919 $ 3,878 $ 3,757 Right-of-use assets obtained in exchange for operating lease obligations $ 77 $ 5,476 $ 206 $ 5,476

OTHER FINANCIAL STATEMENT INFOR

OTHER FINANCIAL STATEMENT INFORMATION	6 Months Ended
OTHER FINANCIAL STATEMENT INFORMATION	Jul. 01, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
OTHER FINANCIAL STATEMENT INFORMATION	OTHER FINANCIAL STATEMENT INFORMATION The following tables provide details of selected balance sheet components: Accounts receivable, net: As of (in thousands) July 1, 2022 December 31, 2021 Accounts receivable $ 109,268 $ 91,382 Less: allowances for expected credit losses and sales returns (2,917) (2,853) Total $ 106,351 $ 88,529 Inventories: As of (in thousands) July 1, 2022 December 31, 2021 Raw materials $ 27,916 $ 22,245 Work-in-process 3,623 3,993 Finished goods 43,955 37,545 Service-related spares 7,142 7,412 Total $ 82,636 $ 71,195 Prepaid expenses and other current assets: As of (in thousands) July 1, 2022 December 31, 2021 Prepaid expenses $ 5,824 $ 8,074 Contract assets 4,737 8,101 Other current assets 17,059 13,797 Total $ 27,620 $ 29,972 Property and equipment, net: As of (in thousands) July 1, 2022 December 31, 2021 Machinery and equipment $ 80,200 $ 78,461 Capitalized software 37,945 38,306 Leasehold improvements 40,347 40,658 Furniture and fixtures 2,904 2,820 Construction-in-progress 3,421 1,892 Property and equipment, gross 164,817 162,137 Less: accumulated depreciation and amortization (123,213) (119,416) Total $ 41,604 $ 42,721 Other current liabilities: As of (in thousands) July 1, 2022 December 31, 2021 Accrued employee compensation and related expenses $ 20,943 $ 26,820 Other 38,672 26,824 Total $ 59,615 $ 53,644

CONVERTIBLE DEBT

CONVERTIBLE DEBT	6 Months Ended
CONVERTIBLE DEBT	Jul. 01, 2022
Debt Disclosure [Abstract]
CONVERTIBLE DEBT	CONVERTIBLE DEBT 4.375% Convertible Senior Notes due 2022 (the “2022 Notes”) In June 2020, the Company issued the 2022 Notes with an aggregate principal amount of $37.7 million in a non-cash exchange for its 2020 Notes with an equal principal amount pursuant to an indenture, dated June 2, 2020 (the “2022 Notes Indenture”), by and between the Company and U.S. Bank National Association, as trustee. The 2022 Notes bear interest at a rate of 4.375% per year, payable in cash on June 1 and December 1 of each year. The 2022 Notes will mature on December 1, 2022, unless earlier repurchased or redeemed by the Company, or converted pursuant to their terms. The 2022 Notes were initially convertible into cash, shares of the Company’s common stock, par value $0.001 (“Common Stock”), or a combination thereof, at the Company’s election, at an initial conversion rate of 173.9978 shares of Common Stock per $1,000 principal amount of 2022 Notes (which is equivalent to an initial conversion price of approximately $5.75 per share). Pursuant to the supplemental indenture entered into by the Company and the trustee during the fourth quarter of fiscal 2021, the Company made an irrevocable election to settle the principal amounts of the 2022 Notes solely with cash and may pay or deliver, as the case may be, any conversion value greater than the principal amount in cash, shares of common stock or a combination thereof, at the Company’s election. The conversion rate, and thus the effective conversion price, may be adjusted under certain circumstances, including in connection with conversions made following certain fundamental changes and under other circumstances as set forth in the 2022 Notes Indenture. Prior to the close of business on the business day immediately preceding September 1, 2022, the 2022 Notes will be convertible only under the following circumstances: (1) during any fiscal quarter commencing after the fiscal quarter ended on June 26, 2020 (and only during such fiscal quarter), if the last reported sale price of Common Stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement period”) in which the trading price per $1,000 principal amount of 2022 Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of Common Stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. Commencing on September 1, 2022 until the close of business on the second scheduled trading day immediately preceding the maturity date, the 2022 Notes will be convertible in multiples of $1,000 principal amount regardless of the foregoing circumstances. The 2022 Notes continue to remain convertible as of July 1, 2022, as the last reported sale price of the Company’s common stock for at least 20 trading days during a period of 30 consecutive trading days ended on July 1, 2022 was greater than 130% of the conversion price of the 2022 Notes on each applicable trading day. All $37.6 million of the net carrying amount of the 2022 Notes outstanding as of July 1, 2022 was classified as a current liability as of that date. As the 2022 Notes were issued in exchange for the 2020 Notes, which was accounted for as an extinguishment, the 2022 Notes were initially accounted for at fair value, which was estimated to be $44.4 million. In accordance with the accounting guidance on embedded conversion features, the conversion feature associated with the 2022 Notes was initially valued at $8.3 million and bifurcated from the host debt instrument and recorded in “Additional paid-in capital.” The remaining amount of $36.0 million, which represents the fair value of the liability component of the 2022 Notes, was recorded as the initial carrying value of the 2022 Notes. The initial debt discount on the 2022 Notes was $1.7 million, calculated as the difference between the stated principal amount of $37.7 million and the initial carrying value of the liability component of $36.0 million. The debt discount was being amortized, prior to adoption of ASU 2020-06, to interest expense at the effective interest rate over the contractual term of the 2022 Notes. As discussed in the Note 2. “Recent Accounting Pronouncements”, effective January 1, 2022, the Company adopted ASU 2020-06 using the modified retrospective method and, as a result, accounted for the Convertible debt as a single liability measured at amortized cost. The following table presents the components of the 2022 Notes: As of (in thousands, except for years and percentages) July 1, 2022 December 31, 2021 Liability component: Principal amount $ 37,707 $ 37,707 Less: Debt discount, net of amortization — (672) Less: Debt issuance costs, net of amortization (119) (211) Carrying amount $ 37,588 $ 36,824 Remaining debt discount amortization period (years) n/a 0.9 Effective interest rate on liability component n/a 6.95 % The following table presents interest expense recognized for the 2022 Notes: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Contractual interest expense $ 412 $ 412 $ 824 $ 824 Amortization of debt discount — 171 — 337 Amortization of debt issuance costs 70 53 138 105 Total interest expense recognized $ 482 $ 636 $ 962 $ 1,266 2.00% Convertible Senior Notes due 2024 (the “2024 Notes”) In September 2019, the Company issued the 2024 Notes with an aggregate principal amount of $115.5 million pursuant to an indenture (the “2024 Notes Indenture”), dated September 13, 2019, by and between the Company and U.S. Bank National Association, as trustee. The 2024 Notes bear interest at a rate of 2.00% per year, payable semiannually on March 1 and September 1 of each year. The 2024 Notes will mature on September 1, 2024, unless earlier repurchased or redeemed by the Company, or converted pursuant to their terms. The 2024 Notes were initially convertible into cash, shares of the Company’s common stock, par value $0.001 (“Common Stock”), or a combination thereof, at the Company’s election, at an initial conversion rate of 115.5001 shares of Common Stock per $1,000 principal amount of 2024 Notes (which is equivalent to an initial conversion price of approximately $8.66 per share). Pursuant to the supplemental indenture entered into by the Company and the trustee during the fourth quarter of fiscal 2021, the Company made an irrevocable election to settle the principal amounts of the 2024 Notes solely with cash and may pay or deliver, as the case may be, any conversion value greater than the principal amount in cash, shares of common stock or a combination thereof, at the Company’s election. The conversion rate, and thus the effective conversion price, may be adjusted under certain circumstances, including in connection with conversions made following certain fundamental changes or a notice of redemption and under other circumstances, in each case, as set forth in the 2024 Notes Indenture. The 2024 Notes will be convertible at certain times and upon the occurrence of certain events in the future, in each case, specified in the 2024 Notes Indenture. Further, on or after June 1, 2024, until the close of business on the scheduled trading day immediately preceding the maturity date, holders of the 2024 Notes may convert all or a portion of their 2024 Notes regardless of these conditions. In accordance with the accounting guidance on embedded conversion features, the conversion feature associated with the 2024 Notes was valued at $24.9 million and bifurcated from the host debt instrument and recorded in “Additional paid-in capital”. The resulting debt discount on the 2024 Notes was being amortized, prior to adoption of ASU 2020-06, to interest expense at the effective interest rate over the contractual term of the 2024 Notes. As discussed in the Note 2. “Recent Accounting Pronouncements”, effective January 1, 2022, the Company adopted ASU 2020-06 using the modified retrospective method and, as a result, accounted for the Convertible debt as a single liability measured at amortized cost. The following table presents the components of the 2024 Notes: As of (in thousands, except for years and percentages) July 1, 2022 December 31, 2021 Liability component: Principal amount $ 115,500 $ 115,500 Less: Debt discount, net of amortization — (14,576) Less: Debt issuance costs, net of amortization (1,959) (1,983) Carrying amount $ 113,541 $ 98,941 Remaining debt discount amortization period (years) n/a 2.7 Effective interest rate on liability component n/a 7.95 % The following table presents interest expense recognized for the 2024 Notes: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Contractual interest expense $ 578 $ 578 $ 1,156 $ 1,156 Amortization of debt discount — 1,166 — 2,312 Amortization of debt issuance costs 217 158 434 314 Total interest expense recognized $ 795 $ 1,902 $ 1,590 $ 3,782

STOCKHOLDERS_ EQUITY

STOCKHOLDERS’ EQUITY	6 Months Ended
STOCKHOLDERS’ EQUITY	Jul. 01, 2022
Equity [Abstract]
STOCKHOLDERS’ EQUITY	STOCKHOLDERS’ EQUITY Share-based Compensation Plans The following table sets forth the detailed allocation of the share-based compensation expense which was included in the Company’s Condensed Consolidated Statements of Operations: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Cost of revenue $ 604 $ 222 $ 1,131 $ 1,295 Research and development expense 1,317 1,031 3,853 3,571 Selling, general and administrative expense 3,654 2,780 8,177 7,565 Total $ 5,575 $ 4,033 $ 13,161 $ 12,431 Restricted Stock Units: (in thousands, except per share amounts) Number Weighted Average Balance at December 31, 2021 3,878 $ 7.31 Granted 2,441 9.11 Vested (2,089) 7.22 Forfeited (89) 8.12 Balance at July 1, 2022 4,141 $ 8.50 The Company’s stock benefit plans include the 2002 Employee Stock Purchase Plan (“ESPP”) and current active stock plans adopted in 1995 and 2002 (“1995 Stock Plan” and “2002 Director Plan”, respectively). Refer to Note 12, “Employee Benefit Plans and Stock-based Compensation” of Notes to Consolidated Financial Statements in the 2021 Form 10-K for details pertaining to each plan. The Company’s stockholders approved an amendment to the ESPP at the 2022 annual meeting of stockholders (the “2022 Annual Meeting”) to increase the number of shares of common stock reserved for issuance under the ESPP by 1,000,000 shares. The Company’s stockholders also approved an amendment to the 1995 Stock Plan at the 2022 Annual Meeting to increase the number of shares of common stock reserved for issuance thereunder by 7,000,000 shares. As of July 1, 2022, an aggregate of 5,184,432 shares of common stock were reserved for issuance under the 1995 Stock Plan, of which 933,074 shares remained available for future grants. As of July 1, 2022, an aggregate of 713,431 shares of common stock were reserved for issuance under the 2002 Director Plan, of which 516,858 shares remained available for future grants. Share Repurchase Program On February 3, 2022, the Board of Directors authorized the Company to repurchase up to $100 million of the Company’s outstanding shares of common stock through February 2025. The Company is authorized to repurchase, from time-to-time, shares of its outstanding common stock through open market purchases and 10b5-1 trading plans, in accordance with applicable rules and regulations, at such time and such prices as management may decide. The program does not obligate the Company to repurchase any specific number of shares and may be discontinued at any time. The actual timing and amount of repurchases are subject to business and market conditions, corporate and regulatory requirements, stock price, acquisition opportunities and other factors. During the six months ended July 1, 2022, the company repurchased and retired approximately 0.6 million shares of the Company’s common stock for an aggregate amount of $5.0 million. As of July 1, 2022, approximately $95.0 million of the share repurchase authorization remained available for repurchases under this program.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	6 Months Ended
FAIR VALUE MEASUREMENTS	Jul. 01, 2022
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS The Company’s financial instruments not measured at fair value on a recurring basis were as follows: July 1, 2022 December 31, 2021 Carrying Fair Value Carrying Fair Value ( in thousands ) Value Level 1 Level 2 Level 3 Value Level 1 Level 2 Level 3 2022 Notes $ 37,588 $ — $ 57,503 $ — $ 36,824 $ — $ 78,619 $ — 2024 Notes $ 113,541 $ — $ 137,437 $ — $ 98,941 $ — $ 173,419 $ — The fair value of the Company’s convertible notes is influenced by interest rates, the Company’s stock price and stock market volatility. The difference between the carrying value and the fair value is primarily due to the spread between the conversion price and the market value of the shares underlying the conversion as of each respective balance sheet date.

EARNINGS PER SHARE

EARNINGS PER SHARE	6 Months Ended
EARNINGS PER SHARE	Jul. 01, 2022
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE The following table sets forth the computation of the basic and diluted net income (loss) per share: Three Months Ended Six Months Ended (in thousands, except per share amounts) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Numerator: Net income (loss) $ 14,840 $ (2,009) $ 13,311 $ (8,133) Denominator: Weighted average number of shares outstanding: Basic 104,630 101,218 104,312 100,539 2022 Notes 2,365 — 2,537 — 2024 Notes 491 — 1,014 — Stock options 234 — 249 — Restricted stock units 1,193 — 1,627 — Stock purchase rights under the ESPP 71 — 35 — Diluted 108,984 101,218 109,774 100,539 Net income (loss) per share: Basic $ 0.14 $ (0.02) $ 0.13 $ (0.08) Diluted $ 0.14 $ (0.02) $ 0.12 $ (0.08) The diluted net loss per share was the same as basic net loss per share for the three and six months ended July 2, 2021, as the inclusion of potential common shares outstanding would have been anti-dilutive due to the Company’s net losses for these periods. The following table sets forth the potential weighted common shares outstanding and anti-dilutive weighted shares that were excluded from the computation of basic and diluted net income (loss) per share: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 2022 Notes — 1,645 — 1,720 Stock options — 839 — 1,015 Restricted stock units 48 2,961 53 2,895 Stock purchase rights under the ESPP 398 404 404 372 Total 446 5,849 457 6,002

SEGMENT INFORMATION

SEGMENT INFORMATION	6 Months Ended
SEGMENT INFORMATION	Jul. 01, 2022
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION Operating segments are defined as components of an enterprise that engage in business activities for which separate financial information is available and evaluated regularly by the Company’s Chief Operating Decision Maker (the “CODM”), in deciding how to allocate resources and assess performance. The Company’s CODM is its Chief Executive Officer. Based on the Company’s internal reporting structure, the Company consists of two operating segments: Video and Cable Access. The operating segments were determined based on the nature of the products offered. The Video segment provides video processing and production and playout solutions and services worldwide to broadcast and media companies, streaming new media companies, cable operators, and satellite and telecommunications Pay-TV service providers. The Cable Access segment provides cable access solutions and related services to cable operators globally. A measure of assets by segment is not applicable as segment assets are not included in the discrete financial information provided to the CODM. The following table provides summary financial information by reportable segment: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Video Revenue $ 76,215 $ 63,355 $ 142,057 $ 133,686 Gross profit 48,136 37,571 86,820 76,345 Operating income 11,271 1,559 14,410 5,331 Cable Access Revenue $ 81,231 $ 50,093 $ 162,828 $ 91,338 Gross profit 34,936 23,538 65,947 40,946 Operating income 10,131 4,992 18,270 6,288 Total Revenue $ 157,446 $ 113,448 $ 304,885 $ 225,024 Gross profit 83,072 61,109 152,767 117,291 Operating income 21,402 6,551 32,680 11,619 A reconciliation of the Company’s consolidated segment operating income to consolidated income (loss) before income taxes is as follows: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Total consolidated segment operating income $ 21,402 $ 6,551 $ 32,680 $ 11,619 Unallocated corporate expenses (1) (745) (382) (1,901) (389) Stock-based compensation (5,575) (4,033) (13,161) (12,431) Amortization of intangibles — — — (507) Consolidated income (loss) from operations 15,082 2,136 17,618 (1,708) Non-operating expense, net 2,880 (2,777) 1,509 (4,361) Income (loss) before income taxes $ 17,962 $ (641) $ 19,127 $ (6,069) (1) Together with amortization of intangibles and stock-based compensation, the Company does not allocate restructuring and related charges to the operating income (loss) for each segment because management does not include this information in the measurement of the performance of the operating segments. Geographic Information Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Net revenue (1) United States $ 106,109 $ 61,294 $ 192,987 $ 128,389 Other countries 51,337 52,154 111,898 96,635 Total $ 157,446 $ 113,448 $ 304,885 $ 225,024 (1) Revenue is attributed to countries based on the location of the customer.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
COMMITMENTS AND CONTINGENCIES	Jul. 01, 2022
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Indemnification The Company is obligated to indemnify its officers and the members of its Board of Directors pursuant to its bylaws and contractual indemnity agreements. The Company also indemnifies some of its suppliers and most of its customers for specified intellectual property matters pursuant to certain contractual arrangements, subject to certain limitations. The scope of these indemnities varies, but, in some instances, includes indemnification for damages and expenses (including reasonable attorneys’ fees). There have been no amounts accrued in respect of these indemnification provisions through July 1, 2022. Legal proceedings From time to time, the Company is involved in lawsuits as well as subject to various legal proceedings, claims, threats of litigation, audits of royalty payments for licensed technology and investigations in the ordinary course of business, including claims of alleged infringement of third-party patents and other intellectual property rights, commercial, employment, and other matters. The Company assesses potential liabilities in connection with each lawsuit and threatened lawsuits and accrues an estimated loss for these loss contingencies if both of the following conditions are met: information available prior to issuance of the financial statements indicates that it is probable that a liability has been incurred at the date of the financial statements and the amount of loss can be reasonably estimated. While certain matters to which the Company is a party specify the damages claimed, such claims may not represent reasonably probable losses. Given the inherent uncertainties of litigation, the ultimate outcome of these matters cannot be predicted at this time, nor can the amount of possible loss or range of loss, if any, be reasonably estimated.

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	6 Months Ended
BASIS OF PRESENTATION (Policies)	Jul. 01, 2022
Accounting Policies [Abstract]
Use of Estimates	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Reclassification	Certain prior period balances have been reclassified to conform to the current period’s presentation. These reclassifications did not have a material impact on previously reported financial statements.
Recent Accounting Pronouncements	In August 2020, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2020-06, Accounting for Convertible Instruments in an Entity’s Own Equity, which simplifies the accounting for convertible instruments and contracts on an entity’s own equity. The Company adopted ASU 2020-06 effective on January 1, 2022, using the modified retrospective method. Among other changes, ASU 2020-06 removes from U.S. GAAP the liability and equity separation model for convertible instruments with a cash conversion feature. As a result, the Company no longer separately presents in equity an embedded conversion feature for such debt. Similarly, the embedded conversion feature is no longer amortized into income as interest expense over the life of the instrument.
Segment Information	Operating segments are defined as components of an enterprise that engage in business activities for which separate financial information is available and evaluated regularly by the Company’s Chief Operating Decision Maker (the “CODM”), in deciding how to allocate resources and assess performance. The Company’s CODM is its Chief Executive Officer. Based on the Company’s internal reporting structure, the Company consists of two operating segments: Video and Cable Access. The operating segments were determined based on the nature of the products offered.
Indemnification	The Company is obligated to indemnify its officers and the members of its Board of Directors pursuant to its bylaws and contractual indemnity agreements. The Company also indemnifies some of its suppliers and most of its customers for specified intellectual property matters pursuant to certain contractual arrangements, subject to certain limitations. The scope of these indemnities varies, but, in some instances, includes indemnification for damages and expenses (including reasonable attorneys’ fees).

RECENT ACCOUNTING PRONOUNCEME_2

RECENT ACCOUNTING PRONOUNCEMENTS (Tables)	6 Months Ended
RECENT ACCOUNTING PRONOUNCEMENTS (Tables)	Jul. 01, 2022
Accounting Changes and Error Corrections [Abstract]
Schedule of Accounting Standards Update and Change in Accounting Principle	The cumulative effect of the ASU adoption was as follows: Adjustments from Balance at Adoption of Balance at (in thousands) December 31, 2021 ASU 2020-06 January 1, 2022 Liabilities Convertible debt, current $ 36,824 $ 626 $ 37,450 Convertible debt, non-current 98,941 14,167 113,108 Mezzanine equity Convertible debt 883 (883) — Equity Additional paid-capital 2,387,039 (32,249) 2,354,790 Accumulated deficit (2,087,957) 18,339 (2,069,618)

CONTRACT ASSETS AND DEFERRED _2

CONTRACT ASSETS AND DEFERRED REVENUE (Tables)	6 Months Ended
CONTRACT ASSETS AND DEFERRED REVENUE (Tables)	Jul. 01, 2022
Revenue from Contract with Customer [Abstract]
Schedule of Contract Assets and Deferred Revenue	Contract assets and deferred revenue consisted of the following: As of (in thousands) July 1, 2022 December 31, 2021 Contract assets $ 4,737 $ 8,101 Deferred revenue $ 94,199 $ 78,167

LEASES (Tables)

LEASES (Tables)	6 Months Ended
LEASES (Tables)	Jul. 01, 2022
Leases [Abstract]
Schedule of Lease Expense	The components of lease expense are as follows: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Operating lease cost $ 2,148 $ 1,877 $ 4,035 $ 3,743 Variable lease cost 431 518 892 1,027 Total lease cost $ 2,579 $ 2,395 $ 4,927 $ 4,770 Supplemental information related to leases are as follows: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Cash paid for amounts included in the measurement of operating lease liabilities $ 1,962 $ 1,919 $ 3,878 $ 3,757 Right-of-use assets obtained in exchange for operating lease obligations $ 77 $ 5,476 $ 206 $ 5,476

OTHER FINANCIAL STATEMENT INF_2

OTHER FINANCIAL STATEMENT INFORMATION (Tables)	6 Months Ended
OTHER FINANCIAL STATEMENT INFORMATION (Tables)	Jul. 01, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Accounts Receivable, Net	The following tables provide details of selected balance sheet components: Accounts receivable, net: As of (in thousands) July 1, 2022 December 31, 2021 Accounts receivable $ 109,268 $ 91,382 Less: allowances for expected credit losses and sales returns (2,917) (2,853) Total $ 106,351 $ 88,529
Schedule of Inventories	Inventories: As of (in thousands) July 1, 2022 December 31, 2021 Raw materials $ 27,916 $ 22,245 Work-in-process 3,623 3,993 Finished goods 43,955 37,545 Service-related spares 7,142 7,412 Total $ 82,636 $ 71,195
Schedule of Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets: As of (in thousands) July 1, 2022 December 31, 2021 Prepaid expenses $ 5,824 $ 8,074 Contract assets 4,737 8,101 Other current assets 17,059 13,797 Total $ 27,620 $ 29,972
Schedule of Property and Equipment, Net	Property and equipment, net: As of (in thousands) July 1, 2022 December 31, 2021 Machinery and equipment $ 80,200 $ 78,461 Capitalized software 37,945 38,306 Leasehold improvements 40,347 40,658 Furniture and fixtures 2,904 2,820 Construction-in-progress 3,421 1,892 Property and equipment, gross 164,817 162,137 Less: accumulated depreciation and amortization (123,213) (119,416) Total $ 41,604 $ 42,721
Schedule of Other Current Liabilities	Other current liabilities: As of (in thousands) July 1, 2022 December 31, 2021 Accrued employee compensation and related expenses $ 20,943 $ 26,820 Other 38,672 26,824 Total $ 59,615 $ 53,644

CONVERTIBLE DEBT (Tables)

CONVERTIBLE DEBT (Tables)	6 Months Ended
CONVERTIBLE DEBT (Tables)	Jul. 01, 2022
Debt Disclosure [Abstract]
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	The following table presents the components of the 2022 Notes: As of (in thousands, except for years and percentages) July 1, 2022 December 31, 2021 Liability component: Principal amount $ 37,707 $ 37,707 Less: Debt discount, net of amortization — (672) Less: Debt issuance costs, net of amortization (119) (211) Carrying amount $ 37,588 $ 36,824 Remaining debt discount amortization period (years) n/a 0.9 Effective interest rate on liability component n/a 6.95 % The following table presents the components of the 2024 Notes: As of (in thousands, except for years and percentages) July 1, 2022 December 31, 2021 Liability component: Principal amount $ 115,500 $ 115,500 Less: Debt discount, net of amortization — (14,576) Less: Debt issuance costs, net of amortization (1,959) (1,983) Carrying amount $ 113,541 $ 98,941 Remaining debt discount amortization period (years) n/a 2.7 Effective interest rate on liability component n/a 7.95 %
Schedule of Convertible Debt Interest	The following table presents interest expense recognized for the 2022 Notes: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Contractual interest expense $ 412 $ 412 $ 824 $ 824 Amortization of debt discount — 171 — 337 Amortization of debt issuance costs 70 53 138 105 Total interest expense recognized $ 482 $ 636 $ 962 $ 1,266 The following table presents interest expense recognized for the 2024 Notes: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Contractual interest expense $ 578 $ 578 $ 1,156 $ 1,156 Amortization of debt discount — 1,166 — 2,312 Amortization of debt issuance costs 217 158 434 314 Total interest expense recognized $ 795 $ 1,902 $ 1,590 $ 3,782

STOCKHOLDERS_ EQUITY (Tables)

STOCKHOLDERS’ EQUITY (Tables)	6 Months Ended
STOCKHOLDERS’ EQUITY (Tables)	Jul. 01, 2022
Equity [Abstract]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The following table sets forth the detailed allocation of the share-based compensation expense which was included in the Company’s Condensed Consolidated Statements of Operations: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Cost of revenue $ 604 $ 222 $ 1,131 $ 1,295 Research and development expense 1,317 1,031 3,853 3,571 Selling, general and administrative expense 3,654 2,780 8,177 7,565 Total $ 5,575 $ 4,033 $ 13,161 $ 12,431
Schedule of Restricted Stock Units Outstanding	(in thousands, except per share amounts) Number Weighted Average Balance at December 31, 2021 3,878 $ 7.31 Granted 2,441 9.11 Vested (2,089) 7.22 Forfeited (89) 8.12 Balance at July 1, 2022 4,141 $ 8.50

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	6 Months Ended
FAIR VALUE MEASUREMENTS (Tables)	Jul. 01, 2022
Fair Value Disclosures [Abstract]
Schedule of Financial Instruments Not Measured at Fair Value on a Recurring Basis	The Company’s financial instruments not measured at fair value on a recurring basis were as follows: July 1, 2022 December 31, 2021 Carrying Fair Value Carrying Fair Value ( in thousands ) Value Level 1 Level 2 Level 3 Value Level 1 Level 2 Level 3 2022 Notes $ 37,588 $ — $ 57,503 $ — $ 36,824 $ — $ 78,619 $ — 2024 Notes $ 113,541 $ — $ 137,437 $ — $ 98,941 $ — $ 173,419 $ —

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	6 Months Ended
EARNINGS PER SHARE (Tables)	Jul. 01, 2022
Earnings Per Share [Abstract]
Schedule of Numerators and Denominators of Basic and Diluted Net Income (Loss) Per Share Computations	The following table sets forth the computation of the basic and diluted net income (loss) per share: Three Months Ended Six Months Ended (in thousands, except per share amounts) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Numerator: Net income (loss) $ 14,840 $ (2,009) $ 13,311 $ (8,133) Denominator: Weighted average number of shares outstanding: Basic 104,630 101,218 104,312 100,539 2022 Notes 2,365 — 2,537 — 2024 Notes 491 — 1,014 — Stock options 234 — 249 — Restricted stock units 1,193 — 1,627 — Stock purchase rights under the ESPP 71 — 35 — Diluted 108,984 101,218 109,774 100,539 Net income (loss) per share: Basic $ 0.14 $ (0.02) $ 0.13 $ (0.08) Diluted $ 0.14 $ (0.02) $ 0.12 $ (0.08)
Schedule of Antidilutive Securities	The diluted net loss per share was the same as basic net loss per share for the three and six months ended July 2, 2021, as the inclusion of potential common shares outstanding would have been anti-dilutive due to the Company’s net losses for these periods. The following table sets forth the potential weighted common shares outstanding and anti-dilutive weighted shares that were excluded from the computation of basic and diluted net income (loss) per share: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 2022 Notes — 1,645 — 1,720 Stock options — 839 — 1,015 Restricted stock units 48 2,961 53 2,895 Stock purchase rights under the ESPP 398 404 404 372 Total 446 5,849 457 6,002

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	6 Months Ended
SEGMENT INFORMATION (Tables)	Jul. 01, 2022
Segment Reporting [Abstract]
Schedule of Segment Reporting Information	The following table provides summary financial information by reportable segment: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Video Revenue $ 76,215 $ 63,355 $ 142,057 $ 133,686 Gross profit 48,136 37,571 86,820 76,345 Operating income 11,271 1,559 14,410 5,331 Cable Access Revenue $ 81,231 $ 50,093 $ 162,828 $ 91,338 Gross profit 34,936 23,538 65,947 40,946 Operating income 10,131 4,992 18,270 6,288 Total Revenue $ 157,446 $ 113,448 $ 304,885 $ 225,024 Gross profit 83,072 61,109 152,767 117,291 Operating income 21,402 6,551 32,680 11,619
Schedule of Reconciliation of Operating Profit (Loss) from Segments to Consolidated	A reconciliation of the Company’s consolidated segment operating income to consolidated income (loss) before income taxes is as follows: Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Total consolidated segment operating income $ 21,402 $ 6,551 $ 32,680 $ 11,619 Unallocated corporate expenses (1) (745) (382) (1,901) (389) Stock-based compensation (5,575) (4,033) (13,161) (12,431) Amortization of intangibles — — — (507) Consolidated income (loss) from operations 15,082 2,136 17,618 (1,708) Non-operating expense, net 2,880 (2,777) 1,509 (4,361) Income (loss) before income taxes $ 17,962 $ (641) $ 19,127 $ (6,069) (1) Together with amortization of intangibles and stock-based compensation, the Company does not allocate restructuring and related charges to the operating income (loss) for each segment because management does not include this information in the measurement of the performance of the operating segments.
Schedule of Revenue from External Customers by Geographic Areas	Geographic Information Three Months Ended Six Months Ended (in thousands) July 1, 2022 July 2, 2021 July 1, 2022 July 2, 2021 Net revenue (1) United States $ 106,109 $ 61,294 $ 192,987 $ 128,389 Other countries 51,337 52,154 111,898 96,635 Total $ 157,446 $ 113,448 $ 304,885 $ 225,024 (1) Revenue is attributed to countries based on the location of the customer.

RECENT ACCOUNTING PRONOUNCEME_3

RECENT ACCOUNTING PRONOUNCEMENTS - Cumulative Effect of ASU Adoption (Details) - USD ($) $ in Thousands	Jul. 01, 2022	Dec. 31, 2021
Liabilities
Convertible debt, current	$ 37,588	$ 36,824
Convertible debt, non-current	113,541	98,941
Mezzanine equity
Convertible debt	0	883
Equity
Additional paid-in capital	2,371,001	2,387,039
Accumulated deficit	$ (2,061,320)	(2,087,957)
Cumulative Effect, Period of Adoption, Adjustment \| ASU 2020-06
Liabilities
Convertible debt, current		626
Convertible debt, non-current		14,167
Mezzanine equity
Convertible debt		(883)
Equity
Additional paid-in capital		(32,249)
Accumulated deficit		18,339
Cumulative Effect, Period of Adoption, Adjusted Balance
Liabilities
Convertible debt, current		37,450
Convertible debt, non-current		113,108
Mezzanine equity
Convertible debt		0
Equity
Additional paid-in capital		2,354,790
Accumulated deficit		$ (2,069,618)

RECENT ACCOUNTING PRONOUNCEME_4

RECENT ACCOUNTING PRONOUNCEMENTS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease in interest expense, net	$ (1,394)	$ (2,630)	$ (2,827)	$ (5,233)
Basic net loss per share (in dollars per share)	$ 0.14	$ (0.02)	$ 0.13	$ (0.08)
Diluted net loss per share (in dollars per share)	$ 0.14	$ (0.02)	$ 0.12	$ (0.08)
Cumulative Effect, Period of Adoption, Adjustment \| ASU 2020-06
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease in interest expense, net	$ 1,400		$ 2,700
Basic net loss per share (in dollars per share)	$ 0.01		$ 0.03
Diluted net loss per share (in dollars per share)	$ 0.01		$ 0.03

INVESTMENTS IN EQUITY SECURIT_2

INVESTMENTS IN EQUITY SECURITIES (Details) - EDC $ in Thousands	1 Months Ended
	May 31, 2022 USD ($)
Equity Securities without Readily Determinable Fair Value [Line Items]
Total consideration	$ 10,700
Proceeds from sale of investment	7,800
Gain on sale of investment	4,200
Potential additional consideration on sale of equity securities	$ 2,900
Expiration period	18 months

CONTRACT ASSETS AND DEFERRED _3

CONTRACT ASSETS AND DEFERRED REVENUE - Summary of Contract Assets and Deferred Revenue (Details) - USD ($) $ in Thousands	Jul. 01, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Contract assets	$ 4,737	$ 8,101
Deferred revenue	$ 94,199	$ 78,167

CONTRACT ASSETS AND DEFERRED _4

CONTRACT ASSETS AND DEFERRED REVENUE - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized that was included within the deferred revenue balance	$ 11.3	$ 8.6	$ 34.8	$ 39.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-02
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 497.9		$ 497.9
Revenue, remaining performance obligation, proportion to be recognized in next twelve months (as a percent)	83%		83%
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months		12 months

LEASES (Details)

LEASES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
LEASES (Details) - USD ($) $ in Thousands	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Leases [Abstract]
Operating lease cost	$ 2,148	$ 1,877	$ 4,035	$ 3,743
Variable lease cost	431	518	892	1,027
Total lease cost	2,579	2,395	4,927	4,770
Cash paid for amounts included in the measurement of operating lease liabilities	1,962	1,919	3,878	3,757
Right-of-use assets obtained in exchange for operating lease obligations	$ 77	$ 5,476	$ 206	$ 5,476

OTHER FINANCIAL STATEMENT INF_3

OTHER FINANCIAL STATEMENT INFORMATION - Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Jul. 01, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts receivable	$ 109,268	$ 91,382
Less: allowances for expected credit losses and sales returns	(2,917)	(2,853)
Total	$ 106,351	$ 88,529

OTHER FINANCIAL STATEMENT INF_4

OTHER FINANCIAL STATEMENT INFORMATION - Inventories (Details) - USD ($) $ in Thousands	Jul. 01, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Raw materials	$ 27,916	$ 22,245
Work-in-process	3,623	3,993
Finished goods	43,955	37,545
Service-related spares	7,142	7,412
Total	$ 82,636	$ 71,195

OTHER FINANCIAL STATEMENT INF_5

OTHER FINANCIAL STATEMENT INFORMATION - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Jul. 01, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid expenses	$ 5,824	$ 8,074
Contract assets	4,737	8,101
Other current assets	17,059	13,797
Total	$ 27,620	$ 29,972

OTHER FINANCIAL STATEMENT INF_6

OTHER FINANCIAL STATEMENT INFORMATION - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jul. 01, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 164,817	$ 162,137
Less: accumulated depreciation and amortization	(123,213)	(119,416)
Total	41,604	42,721
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	80,200	78,461
Capitalized software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	37,945	38,306
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	40,347	40,658
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,904	2,820
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,421	$ 1,892

OTHER FINANCIAL STATEMENT INF_7

OTHER FINANCIAL STATEMENT INFORMATION - Other Current Liabilities (Details) - USD ($) $ in Thousands	Jul. 01, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued employee compensation and related expenses	$ 20,943	$ 26,820
Other	38,672	26,824
Total	$ 59,615	$ 53,644

CONVERTIBLE DEBT - Narrative (D

CONVERTIBLE DEBT - Narrative (Details) $ / shares in Units, $ in Thousands			6 Months Ended
	Jun. 02, 2020 USD ($) d $ / shares	Sep. 13, 2019 USD ($) $ / shares	Jul. 01, 2022 USD ($) d $ / shares	Dec. 31, 2021 USD ($) $ / shares	Sep. 25, 2020 USD ($)
Debt Instrument [Line Items]
Common stock, par value (in dollars per share) \| $ / shares			$ 0.001	$ 0.001
2022 Notes
Debt Instrument [Line Items]
Debt instrument principal amount			$ 37,707	$ 37,707
Fair value of 2022 Notes used to settle 2020 Notes	$ 44,400
Unamortized debt discount			$ 0	672
2022 Notes \| Stock Price Greater or Equal 130 Percent of Note Conversion Rate
Debt Instrument [Line Items]
Debt instrument threshold trading days \| d			20
Debt instrument threshold consecutive trading days \| d			30
2022 Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated percentage (as a percent)	4.375%
Debt instrument principal amount	$ 37,700		$ 37,600
Common stock, par value (in dollars per share) \| $ / shares	$ 0.001
Debt instrument conversion ratio	0.1739978
Debt instrument conversion price (in dollars per share) \| $ / shares	$ 5.75
Carrying amount of equity component	$ 8,300
Convertible debt	36,000
Unamortized debt discount	$ 1,700
2022 Notes \| Senior Notes \| Stock Price Greater or Equal 130 Percent of Note Conversion Rate
Debt Instrument [Line Items]
Debt instrument threshold trading days \| d	20
Debt instrument threshold consecutive trading days \| d	30
Debt instrument threshold percentage of stock price trigger (as a percent)	130%		130%
2022 Notes \| Senior Notes \| Note Price Less Than 98 Percent of Stock Price Times Conversion Rate
Debt Instrument [Line Items]
Debt instrument threshold trading days \| d	5
Debt instrument threshold consecutive trading days \| d	5
Debt instrument threshold percentage of stock price trigger (as a percent)	98%
2024 Notes
Debt Instrument [Line Items]
Debt instrument principal amount			$ 115,500	115,500
Unamortized debt discount			$ 0	$ 14,576
2024 Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated percentage (as a percent)		2%
Debt instrument principal amount		$ 115,500
Common stock, par value (in dollars per share) \| $ / shares		$ 0.001
Debt instrument conversion ratio		115.5001
Debt instrument conversion price (in dollars per share) \| $ / shares		$ 8.66
Carrying amount of equity component					$ 24,900

CONVERTIBLE DEBT - Components o

CONVERTIBLE DEBT - Components of Convertible Notes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Jul. 01, 2022
Debt Instrument [Line Items]
Carrying amount	$ 98,941	$ 113,541
2022 Notes
Debt Instrument [Line Items]
Principal amount	37,707	37,707
Less: Debt discount, net of amortization	(672)	0
Less: Debt issuance costs, net of amortization	(211)	(119)
Carrying amount	$ 36,824	37,588
Remaining debt discount amortization period (years)	10 months 24 days
Effective interest rate on liability component (as a percent)	6.95%
2024 Notes
Debt Instrument [Line Items]
Principal amount	$ 115,500	115,500
Less: Debt discount, net of amortization	(14,576)	0
Less: Debt issuance costs, net of amortization	(1,983)	(1,959)
Carrying amount	$ 98,941	$ 113,541
Remaining debt discount amortization period (years)	2 years 8 months 12 days
Effective interest rate on liability component (as a percent)	7.95%

CONVERTIBLE DEBT - Interest Exp

CONVERTIBLE DEBT - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
2022 Notes
Debt Instrument [Line Items]
Contractual interest expense	$ 412	$ 412	$ 824	$ 824
Amortization of debt discount	0	171	0	337
Amortization of debt issuance costs	70	53	138	105
Total interest expense recognized	482	636	962	1,266
2024 Notes
Debt Instrument [Line Items]
Contractual interest expense	578	578	1,156	1,156
Amortization of debt discount	0	1,166	0	2,312
Amortization of debt issuance costs	217	158	434	314
Total interest expense recognized	$ 795	$ 1,902	$ 1,590	$ 3,782

STOCKHOLDERS_ EQUITY - Share-Ba

STOCKHOLDERS’ EQUITY - Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	$ 5,575	$ 4,033	$ 13,161	$ 12,431
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	604	222	1,131	1,295
Research and development expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	1,317	1,031	3,853	3,571
Selling, general and administrative expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	$ 3,654	$ 2,780	$ 8,177	$ 7,565

STOCKHOLDERS_ EQUITY - Restrict

STOCKHOLDERS’ EQUITY - Restricted Stock Units Outstanding (Details) - Restricted stock units shares in Thousands	6 Months Ended
	Jul. 01, 2022 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance (in shares) \| shares	3,878
Granted (in shares) \| shares	2,441
Vested (in shares) \| shares	(2,089)
Forfeited (in shares) \| shares	(89)
Ending balance (in shares) \| shares	4,141
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance (in dollars per share) \| $ / shares	$ 7.31
Granted (in dollars per share) \| $ / shares	9.11
Vested (in dollars per share) \| $ / shares	7.22
Forfeited (in dollars per share) \| $ / shares	8.12
Ending balance (in dollars per share) \| $ / shares	$ 8.50

STOCKHOLDERS_ EQUITY - Narrativ

STOCKHOLDERS’ EQUITY - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 01, 2022	Jul. 01, 2022	Feb. 03, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Value of stock repurchased and retired during period	$ 2,872	$ 5,013
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount			$ 100,000
Stock repurchased and retired during period (in shares)	324,000	557,000
Value of stock repurchased and retired during period		$ 5,000
Remaining stock repurchase authorization amount	$ 95,000	$ 95,000
Stock Plan 1995
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in common stock reserved for issuance (in shares)		7,000,000
Common stock reserved for issuance (in shares)	5,184,432	5,184,432
Shares available for grant (in shares)	933,074	933,074
Director Option Plans 2002
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)	713,431	713,431
Shares available for grant (in shares)	516,858	516,858
Stock purchase rights under the ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in common stock reserved for issuance (in shares)		1,000,000

FAIR VALUE MEASUREMENTS (Detail

FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Jul. 01, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 37,588	$ 36,824
Carrying Value	113,541	98,941
2022 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	37,588	36,824
2024 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	113,541	98,941
Fair Value, Nonrecurring \| 2022 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	37,588	36,824
Fair Value, Nonrecurring \| 2022 Notes \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Nonrecurring \| 2022 Notes \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	57,503	78,619
Fair Value, Nonrecurring \| 2022 Notes \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Nonrecurring \| 2024 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	113,541	98,941
Fair Value, Nonrecurring \| 2024 Notes \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Nonrecurring \| 2024 Notes \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	137,437	173,419
Fair Value, Nonrecurring \| 2024 Notes \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 0	$ 0

EARNINGS PER SHARE - Basic and

EARNINGS PER SHARE - Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Numerator:
Net income (loss)	$ 14,840	$ (2,009)	$ 13,311	$ (8,133)
Denominator:
Basic (in shares)	104,630	101,218	104,312	100,539
Diluted (in shares)	108,984	101,218	109,774	100,539
Net income (loss) per share:
Basic (in dollars per share)	$ 0.14	$ (0.02)	$ 0.13	$ (0.08)
Diluted (in dollars per share)	$ 0.14	$ (0.02)	$ 0.12	$ (0.08)
Stock options
Denominator:
Weighted average number diluted shares outstanding adjustment (in shares)	234	0	249	0
Restricted stock units
Denominator:
Weighted average number diluted shares outstanding adjustment (in shares)	1,193	0	1,627	0
Stock purchase rights under the ESPP
Denominator:
Weighted average number diluted shares outstanding adjustment (in shares)	71	0	35	0
2022 Notes
Denominator:
Weighted average number diluted shares outstanding adjustment (in shares)	2,365	0	2,537	0
2024 Notes
Denominator:
Weighted average number diluted shares outstanding adjustment (in shares)	491	0	1,014	0

EARNINGS PER SHARE - Antidiluti

EARNINGS PER SHARE - Antidilutive Securities (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share (in shares)	446	5,849	457	6,002
2022 Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share (in shares)	0	1,645	0	1,720
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share (in shares)	0	839	0	1,015
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share (in shares)	48	2,961	53	2,895
Stock purchase rights under the ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share (in shares)	398	404	404	372

SEGMENT INFORMATION - Narrative

SEGMENT INFORMATION - Narrative (Details)	6 Months Ended
SEGMENT INFORMATION - Narrative (Details)	Jul. 01, 2022 segment
Segment Reporting [Abstract]
Number of operating segments	2

SEGMENT INFORMATION - Schedule

SEGMENT INFORMATION - Schedule of Financial Information by Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Segment Reporting Information [Line Items]
Revenue	$ 157,446	$ 113,448	$ 304,885	$ 225,024
Gross profit	82,401	60,505	151,583	115,650
Operating income	15,082	2,136	17,618	(1,708)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	157,446	113,448	304,885	225,024
Gross profit	83,072	61,109	152,767	117,291
Operating income	21,402	6,551	32,680	11,619
Operating Segments \| Video
Segment Reporting Information [Line Items]
Revenue	76,215	63,355	142,057	133,686
Gross profit	48,136	37,571	86,820	76,345
Operating income	11,271	1,559	14,410	5,331
Operating Segments \| Cable Access
Segment Reporting Information [Line Items]
Revenue	81,231	50,093	162,828	91,338
Gross profit	34,936	23,538	65,947	40,946
Operating income	$ 10,131	$ 4,992	$ 18,270	$ 6,288

SEGMENT INFORMATION - Segment I

SEGMENT INFORMATION - Segment Income or Loss Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Segment Reporting Information [Line Items]
Total consolidated segment operating income (loss)	$ 15,082	$ 2,136	$ 17,618	$ (1,708)
Unallocated corporate expenses	(67,319)	(58,369)	(133,965)	(117,358)
Stock-based compensation	(5,575)	(4,033)	(13,161)	(12,431)
Amortization of intangibles	0	0	0	(507)
Non-operating expense, net	2,880	(2,777)	1,509	(4,361)
Income (loss) before income taxes	17,962	(641)	19,127	(6,069)
Operating Segments
Segment Reporting Information [Line Items]
Total consolidated segment operating income (loss)	21,402	6,551	32,680	11,619
Corporate, Non-segments
Segment Reporting Information [Line Items]
Unallocated corporate expenses	$ (745)	$ (382)	$ (1,901)	$ (389)

SEGMENT INFORMATION - Geographi

SEGMENT INFORMATION - Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Segment Reporting Information [Line Items]
Net revenue	$ 157,446	$ 113,448	$ 304,885	$ 225,024
United States
Segment Reporting Information [Line Items]
Net revenue	106,109	61,294	192,987	128,389
Other countries
Segment Reporting Information [Line Items]
Net revenue	$ 51,337	$ 52,154	$ 111,898	$ 96,635

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Details)	Jul. 01, 2022 USD ($)
Indemnification
Other Commitments [Line Items]
Accrual for indemnification provisions	$ 0