Ambarella (AMBA) 10-K29 Mar 242024 FY Annual reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
Document and Entity Information - USD ($) $ in Billions	Jan. 31, 2024	Mar. 22, 2024	Jul. 31, 2023
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jan. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Trading Symbol	AMBA
Entity Registrant Name	AMBARELLA, INC.
Entity Central Index Key	0001280263
Current Fiscal Year End Date	--01-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		40,962,191
Entity Public Float			$ 2.6
Entity File Number	001-35667
Entity Tax Identification Number	98-0459628
Entity Address, Address Line One	3101 Jay Street
Entity Address, City or Town	Santa Clara
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95054
City Area Code	408
Local Phone Number	734-8888
Entity Incorporation, State or Country Code	E9
Title of 12(b) Security	Ordinary Shares, $0.00045 Par Value Per Share
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes
Document Annual Report	true
Document Transition Report	false
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	San Jose, California
Auditor Firm ID	238
Documents Incorporated by Reference	Certain information is incorporated into Part III of this report by reference to the Proxy Statement for the Registrant’s 2024 annual meeting of shareholders to be filed with the Securities and Exchange Commission not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Current assets:
Cash and cash equivalents	$ 144,914	$ 113,541
Marketable debt securities	75,013	93,322
Accounts receivable, net	24,950	51,987
Inventories	29,043	40,486
Restricted cash	7	8
Prepaid expenses and other current assets	6,230	5,288
Total current assets	280,157	304,632
Property and equipment, net	10,439	11,814
Deferred tax assets	234	19,276
Intangible assets, net	55,136	58,497
Operating lease right-of-use assets, net	5,250	8,339
Goodwill	303,625	303,625
Other non-current assets	2,814	4,012
Total assets	657,655	710,195
Current liabilities:
Accounts payable	28,503	17,845
Accrued and other current liabilities	48,598	56,655
Operating lease liabilities, current	3,443	3,539
Income taxes payable	1,541	4,112
Deferred revenue, current	894	1,311
Total current liabilities	82,979	83,462
Operating lease liabilities, non-current	1,896	5,097
Other long-term liabilities	12,909	15,548
Total liabilities	97,784	104,107
Commitments and contingencies (Note 15)	0	0
Shareholders' equity:
Preference shares, $0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at January 31, 2024 and January 31, 2023, respectively	0	0
Ordinary shares, $0.00045 par value per share, 200,000,000 shares authorized; 40,520,558 and 39,043,000 shares issued and outstanding at January 31, 2024 and January 31, 2023, respectively	18	18
Additional paid-in capital	694,967	572,076
Accumulated other comprehensive loss	(183)	(492)
Retained earnings (accumulated deficit)	(134,931)	34,486
Total shareholders’ equity	559,871	606,088
Total liabilities and shareholders' equity	$ 657,655	$ 710,195

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jan. 31, 2024	Jan. 31, 2023
Statement of Financial Position [Abstract]
Preference shares, par value	$ 0.00045	$ 0.00045
Preference shares, shares authorized	20,000,000	20,000,000
Preference shares, shares issued	0	0
Preference shares, shares outstanding	0	0
Ordinary shares, par value	$ 0.00045	$ 0.00045
Ordinary shares, shares authorized	200,000,000	200,000,000
Ordinary shares, shares issued	40,520,558	39,043,000
Ordinary shares, shares outstanding	40,520,558	39,043,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Income Statement [Abstract]
Revenue	$ 226,474	$ 337,606	$ 331,856
Cost of revenue	89,657	128,672	123,724
Gross profit	136,817	208,934	208,132
Operating expenses:
Research and development	215,052	204,946	167,337
Selling, general and administrative	76,325	78,244	70,438
Total operating expenses	291,377	283,190	237,775
Loss from operations	(154,560)	(74,256)	(29,643)
Other income, net	6,030	3,318	1,002
Loss before income taxes	(148,530)	(70,938)	(28,641)
Provision (benefit) for income taxes	20,887	(5,552)	(2,230)
Net loss	$ (169,417)	$ (65,386)	$ (26,411)
Net loss per share attributable to ordinary shareholders:
Basic	$ (4.25)	$ (1.7)	$ (0.72)
Diluted	$ (4.25)	$ (1.7)	$ (0.72)
Weighted-average shares used to compute net loss per share attributable to ordinary shareholders:
Basic	39,878,872	38,363,638	36,577,120
Diluted	39,878,872	38,363,638	36,577,120

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (169,417)	$ (65,386)	$ (26,411)
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on investments	309	(492)	0
Reclassification of unrealized gains (losses) on investments	0	0	(1,219)
Other comprehensive income (loss), net of tax	309	(492)	(1,219)
Comprehensive loss	$ (169,108)	$ (65,878)	$ (27,630)

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Outstanding Ordinary Shares [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings (Accumulated Deficit) [Member]
Beginning Balance, Amount at Jan. 31, 2021	$ 474,976	$ 16	$ 347,458	$ 1,219	$ 126,283
Beginning Balance, Shares at Jan. 31, 2021		35,547,440
Issuance of shares through employee equity plans, Shares		1,636,596
Issuance of shares through employee equity plans, Amount	12,195	$ 1	12,194	0	0
Issuance of shares through employee stock purchase plan, Amount	7,208	$ 0	7,208	0	0
Issuance of shares through employee stock purchase plan, Shares		118,782
Fair value of partially vested equity awards assumed in connection with acquisition	407	$ 0	407	0	0
Stock-based compensation expense	80,020	0	80,020	0	0
Other comprehensive (loss) gain - net of tax	(1,219)	0	0	(1,219)	0
Net loss	(26,411)	0	0	0	(26,411)
Ending Balance, Amount at Jan. 31, 2022	547,176	$ 17	447,287	0	99,872
Ending Balance, Shares at Jan. 31, 2022		37,302,818
Issuance of shares through employee equity plans, Shares		1,635,596
Issuance of shares through employee equity plans, Amount	11,409	$ 1	11,408	0	0
Issuance of shares through employee stock purchase plan, Amount	6,636	$ 0	6,636	0	0
Issuance of shares through employee stock purchase plan, Shares		104,586
Stock-based compensation expense	106,745	$ 0	106,745	0	0
Other comprehensive (loss) gain - net of tax	(492)	0	0	(492)	0
Net loss	(65,386)	0	0	0	(65,386)
Ending Balance, Amount at Jan. 31, 2023	$ 606,088	$ 18	572,076	(492)	34,486
Ending Balance, Shares at Jan. 31, 2023	39,043,000	39,043,000
Issuance of shares through employee equity plans, Shares		1,325,539
Issuance of shares through employee equity plans, Amount	$ 7,280	$ 0	7,280	0	0
Issuance of shares through employee stock purchase plan, Amount	7,934	$ 0	7,934	0	0
Issuance of shares through employee stock purchase plan, Shares		152,019
Stock-based compensation expense	107,677	$ 0	107,677	0	0
Other comprehensive (loss) gain - net of tax	309	0	0	309	0
Net loss	(169,417)	0	0	0	(169,417)
Ending Balance, Amount at Jan. 31, 2024	$ 559,871	$ 18	$ 694,967	$ (183)	$ (134,931)
Ending Balance, Shares at Jan. 31, 2024	40,520,558	40,520,558

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Cash flows from operating activities:
Net loss	$ (169,417)	$ (65,386)	$ (26,411)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	24,813	19,934	14,007
Amortization (accretion) of premium (discount) on marketable debt securities, net	(1,154)	(683)	1,034
Stock-based compensation	111,316	111,158	87,801
Deferred income taxes	19,042	(3,936)	(4,426)
Other non-cash items, net	1,121	(751)	(509)
Changes in operating assets and liabilities:
Accounts receivable	27,037	(7,680)	(18,600)
Inventories	11,443	4,733	(18,944)
Prepaid expenses and other current assets	(961)	153	228
Other non-current assets	38	978	832
Accounts payable	10,658	(13,325)	9,822
Accrued and other current liabilities	(6,660)	5,225	(1,954)
Income taxes payable	(2,571)	2,867	83
Deferred revenue	(1,531)	1,012	(131)
Operating lease liabilities	(3,877)	(4,011)	(3,608)
Other long-term liabilities	(273)	(6,195)	(429)
Net cash provided by operating activities	19,024	44,093	38,795
Cash flows from investing activities:
Acquisition, net of cash acquired	0	0	(307,038)
Purchases of investments	(34,178)	(97,437)	(118,726)
Sales of investments	7,062	2,444	208,132
Maturities of investments	46,935	2,000	107,760
Purchase of tangible and intangible assets	(11,977)	(15,051)	(9,679)
Escrow claim associated with business acquisition	0	749	0
Net cash provided by (used in) investing activities	7,842	(107,295)	(119,551)
Cash flows from financing activities:
Proceeds from exercise of stock options and employee stock purchase plan	10,536	10,585	15,292
Long-term financing payment for intangible assets	(6,030)	(4,887)	(4,767)
Net cash provided by financing activities	4,506	5,698	10,525
Net increase (decrease) in cash, cash equivalents and restricted cash	31,372	(57,504)	(70,231)
Cash, cash equivalents and restricted cash at beginning of period	113,549	171,053	241,284
Cash, cash equivalents and restricted cash at end of period	144,921	113,549	171,053
Supplemental disclosure of cash flow information:
Cash paid for income taxes	7,112	1,444	1,869
Supplemental disclosure of noncash investing activities:
Unpaid liabilities related to tangible and intangible assets purchases	$ 6,880	$ 16,410	$ 1,569

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ (169,417)	$ (65,386)	$ (26,411)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jan. 31, 2024
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	Securities Trading Plans of Directors and Executive Officers During our last fiscal quarter of fiscal year 2024, no director or officer, as defined in Rule 16a-1(f), adopted or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” each as defined in Regulation S-K Item 408.
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Organization and Summary of Sig

Organization and Summary of Significant Accounting Policies	12 Months Ended
Organization and Summary of Significant Accounting Policies	Jan. 31, 2024
Accounting Policies [Abstract]
Organization and Summary of Significant Accounting Policies	1. Organization and Summary of Significant Accounting Policies Organization Ambarella, Inc. (the Company) was incorporated in the Cayman Islands on January 15, 2004. The Company is a leading developer of low-power semiconductor solutions offering high-definition (HD) and Ultra HD compression, advanced image signal processing, and powerful artificial intelligence, or AI, processing. The Company combines its processor design capabilities with its expertise in video and image processing, algorithms and software to provide a technology platform that is designed to be easily scalable across multiple applications and enable rapid and efficient product development. The Company’s system-on-a-chip, or SoC, designs fully integrate high-definition video processing, image processing, artificial intelligence (AI) computer vision algorithms, audio processing and system functions onto a single chip. These low power SoCs deliver exceptional video and image quality and can extract valuable data from high-resolution video and radar streams. The Company is currently addressing a broad range of human and computer vision applications, including video security, advanced driver assistance systems (ADAS), electronic mirrors, drive recorders, driver/cabin monitoring systems, autonomous driving, and industrial and robotic applications. The Company sells its solutions to leading original equipment manufacturers, or OEMs, who include the Company’s SoCs in their products, and original design manufacturers, or ODMs, who include the Company’s SoCs in the products that they supply to OEMs, globally. Basis of Consolidation The Company’s fiscal year ends on January 31. The consolidated financial statements of the Company and its subsidiaries have been prepared in conformity with U.S. GAAP. All intercompany transactions and balances have been eliminated upon consolidation. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reported periods. Actual results could differ from those estimates. On an ongoing basis, management evaluates its estimates and assumptions, including those related to (i) business combinations; (ii) write downs of excess and obsolete inventories; (iii) the estimated useful lives of long-lived assets; (iv) the valuation of stock-based compensation awards; (v) the realization of tax assets and estimates of tax liabilities, including reserves for uncertain tax positions and recognition or release of valuation allowance on deferred tax assets. These estimates and assumptions are based on historical experience and on various other factors which the Company believes to be reasonable under the circumstances. The Company may engage third-party valuation specialists to assist with estimates related to the valuation of assets and stock awards associated with various contractual arrangements. Such estimates often require the selection of appropriate valuation methodologies and significant judgment. Actual results could differ from these estimates under different assumptions or circumstances and such differences could be material. Concentration of Risk The Company’s products are manufactured, assembled and tested by third-party contractors located primarily in Asia. The Company does not have long-term agreements with these contractors. A significant disruption in the operations of one or more of these contractors would impact the production of the Company’s products which could have a material adverse effect on its business, financial condition and results of operations. A substantial portion of the Company’s revenue is derived from sales through one of its distributors, WT Microelectronics Co., Ltd., formerly Wintech Microelectronics Co., Ltd., or WT, which serves as its non-exclusive sales representative and fulfillment partner in Asia other than Japan, and to one ODM, Chicony Electronics Co., Ltd., or Chicony, which manufactures devices incorporating the Company’s solutions on behalf of multiple end-customers. Termination of the relationships with these customers could result in a temporary or permanent loss of revenue. Furthermore, any credit issues from these customers could impair their abilities to make timely payment to the Company. See Note 16 for additional information regarding revenue and credit concentration with these customers. Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents, marketable debt securities and accounts receivable. The Company maintains its cash primarily in checking accounts with reputable financial institutions. Cash deposits held with these financial institutions may exceed the amount of insurance provided on such deposits. The Company has not experienced any losses on deposits of its cash. In order to limit the exposure of each investment, the cash equivalents and marketable debt securities consist primarily of money market funds, commercial paper, corporate bonds, asset-backed securities and U.S. government securities which management assesses to be highly liquid. The Company does not hold or issue financial instruments for trading purposes. The Company performs ongoing credit evaluation of its customers and adjusts credit limits based upon payment history and customers’ credit worthiness. The Company regularly monitors collections and payments from its customers. Foreign Currency Transactions The U.S. dollar is the functional currency for the Company and its subsidiaries. Monetary assets and liabilities denominated in non-U.S. currencies are re-measured to U.S. dollars using current exchange rates in effect at the balance sheet date. Nonmonetary assets and liabilities are re-measured to U.S. dollars using historical exchange rates. Monetary and other accounts are re-measured to U.S. dollars using average exchange rates in effect during each period. Gains or losses from foreign currency re-measurement are included in other income, net in the consolidated statements of operations, and, to date, have not been material. Fair Value of Financial Instruments Fair value accounting is applied to all financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed in the financial statements on a recurring basis. The carrying amounts reflected in the consolidated balance sheets for cash equivalents, accounts receivable, accounts payable, accrued liabilities and other current liabilities, approximate fair value due to the short-term nature. Cash Equivalents and Marketable Debt Securities The Company considers all highly liquid debt security investments with original maturities of less than three months at the time of purchase to be cash equivalents. Debt security investments that are highly liquid with original maturities at the time of purchase greater than three months are considered marketable debt securities. The Company classifies these investments as “available-for-sale” (AFS) securities. In accordance with Accounting Standards Update (ASU) No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, the Company estimates the expected losses whenever a security’s fair value is below its amortized cost basis. The expected loss is computed at an individual security level using the discounted cash flow method with the effective interest rate on the purchase date. In the determination of credit-related losses, the Company excludes securities with zero loss expectation such as assets backed by government agencies. There are various factors considered in its assessment of credit-related losses, including the extent to which the fair value is less than the amortized cost basis, adverse conditions related to an industry or an underlying loan obligator, the payment structure of the security, changes to the rating of the security and other factors that may affect the security credit. The credit-related portion of the loss is recognized in other income, net in the consolidated statements of operations but is limited to the difference between the fair value and the amortized cost basis of the security, adjusted for accrued interest. The non-credit-related portion of the loss is recognized in accumulated other comprehensive loss in the consolidated balance sheets. The Company measures the fair value of money market funds using quoted prices in active markets for identical assets and classifies them within Level 1. The fair value of the Company’s investments in other debt securities are obtained based on quoted prices for similar asserts in active markets, or model driven valuations using significant inputs derived from or corroborated by observable market data and are classified within Level 2. The Company does not have debt securities under unobservable inputs and classified within Level 3. Restricted Cash Amounts included in restricted cash represent those required to be set aside to secure certain transactions in a foreign entity. As of January 31, 2024 and 2023, the restricted cash was immaterial, respectively. The following table presents cash, cash equivalents and restricted cash reported on the consolidated balance sheets, and the sums are presented on the consolidated statements of cash flows: As of January 31, 2024 2023 2022 (in thousands) Cash and cash equivalents $ 144,914 $ 113,541 $ 171,043 Restricted cash 7 8 10 Total as presented in the consolidated statements of cash flows $ 144,921 $ 113,549 $ 171,053 Trade Accounts Receivable and Allowance for Credit Losses The Company’s accounts receivables are recorded at invoiced amounts less allowance for any credit losses. In arrangements where revenue recognition occurs in advance of invoicing, an unbilled receivable is recorded, less allowance for any credit losses, within accounts receivable, when collection of these unbilled amounts are conditional only on the passage of time. According to ASU 2016-13, the Company recognizes credit losses based on a forward-looking current expected credit losses (CECL). The Company makes estimates of expected credit losses based upon its assessment of various factors, including historical collection experience, the age of accounts receivable balances, credit quality of its customers, current economic conditions, reasonable and supportable forecasts of future economic conditions, and other factors that may affect its ability to collect from customers. The changes in allowance for credit losses are recognized in the consolidated statement of operations. The uncollectible accounts receivables are written off in the period in which a determination is made that all commercially reasonable means of recovering them have been exhausted. There were no material credit losses and write-offs of accounts receivable for the fiscal years ended January 31, 2024, 2023 and 2022, respectively. There was no material allowance recorded as of January 31, 2024 and 2023, respectively. Inventories The Company records inventories at the lower of cost or net realizable value. The cost includes materials and other production costs and is computed using standard cost on a first-in, first-out basis. Inventory reserves are recorded for estimated obsolescence or unmarketable inventories based on forecast of future demand and market conditions. Any adjustments to reduce the cost of inventories to their net realizable value are recognized in earnings in the current period. Once inventory is written down, a new accounting cost basis is established and, accordingly, any associated reserve is not released until the inventory is sold or scrapped. Property and Equipment Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful life for computer equipment, computer software, machinery, equipment and furniture and fixtures. Leasehold improvements are amortized over the shorter of the lease term or their estimated useful lives. Repairs and maintenance are charged to expense as incurred. Intangible Assets The Company’s intangible assets primarily consist of acquired intangible assets, including developed technology, customer relationships and trade name, as well as software licenses. The acquired intangible assets are amortized over their estimated useful lives. The Company's in-process research and development, or IPR&D, is initially capitalized at fair value with an indefinite life and amortization commences upon completion of the underlying projects. When a project underlying reported IPR&D is completed, the corresponding amount of IPR&D is reclassified as an amortizable purchased intangible asset and is amortized over its estimated useful life. The Company accounts for a noncancelable on-premise internal-use software license as the acquisition of an intangible asset and the incurrence of a liability to the extent that all or a portion of the software licensing fees are not paid on or before the license acquisition date. The intangible asset and related liability are recorded at net present value and interest expense is recorded over the payment term. The software license is amortized over its license term. The Company expenses the cost of purchased software that is to be sold, leased or otherwise marketed as part of a product until the technological feasibility of the product has been established. Once the technological feasibility of the product, to be externally marketed, has been established or where the software has an alternative future use, the Company capitalizes the cost of purchased software until the associated product is available for general release to customers, at which point the capitalized cost is amortized on a product-by-product basis over the remaining estimated economic life of the product. Leases In accordance with the Accounting Standards Codification (ASC) Topic 842, Leases, the Company recognizes leases as operating lease right-of-use (“ROU”) assets and corresponding lease liabilities at the lease commencement date based on the present value of future lease payments, while recognizing lease expenses under straight-line method through the lease term. The Company also elected the practical expedient that does not recognize ROU assets and lease liabilities that arise from short-term (12 months or less) leases. The Company does not combine lease components with non-lease components, and as a result, the non-lease components are accounted for separately. In determining the present value of lease payments, the Company uses the implicit interest rate if readily determinable. When the implicit rate is not readily determinable, the Company uses its incremental borrowing rate based on the information available at the lease commencement date. The Company's leases mainly include its worldwide office facilities which are all classified as operating leases. Certain leases include renewal options that are under the Company's discretion. The renewal options are included in the ROU asset and liability calculation if it is reasonably certain that the Company will exercise the option. The Company's finance leases were immaterial as of January 31, 2024 and 2023, respectively. Business Combinations In the application of purchase accounting in a business combination, the Company allocates the purchase price to the assets acquired and liabilities assumed based on their estimated fair values. The excess of the purchase price over the fair values of the identifiable assets and liabilities is recorded as goodwill. The Company identifies an acquired intangible asset apart from goodwill whenever the intangible asset arises from contractual or other legal rights, or when it can be separately sold, transferred, licensed, rented or exchanged. Intangible assets consist primarily of developed technology, customer relationships and trade name. When determining the fair values of assets acquired and liabilities assumed, especially with respect to the intangible assets, the Company is required to make significant estimates and assumptions. Critical estimates and assumptions used in valuation techniques include, but are not limited to, revenue growth, technology migration curve, customer attrition rate, royalty rates and risk-adjusted discount rates. The estimates are based on historical data, various internal estimates, and external sources that the Company believes to be reasonable upon the acquisition date. Actual results could differ from these estimates under different assumptions or circumstances and such differences could be material. Goodwill The Company does not amortize goodwill. The Company tests goodwill for impairment at least annually in the fourth fiscal quarter, or sooner whenever events or changes in circumstances indicate that the asset may be impaired. There is only one single reporting unit for goodwill impairment test purposes based on the Company’s business and reporting structure. The Company is permitted to first assess qualitative factors to determine whether the two step goodwill impairment test is necessary. Further testing is only required if the Company determines, based on the qualitative assessment, that it is more likely than not that the reporting unit’s fair value is less than its carrying amount. Otherwise, no further impairment testing is required. Qualitative factors include industry and market considerations, overall financial performance, and other relevant events and factors affecting the reporting unit . No goodwill impairment has been identified to date based on the Company’s qualitative factors assessment. Impairment of Long-Lived Assets Excluding Goodwill The Company reviews property and equipment and intangible assets, excluding goodwill, for impairment at least annually in the fourth fiscal quarter or whenever events or changes in circumstances indicate that the carrying amount of an asset, or asset group, may not be recoverable. Determination of recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset, or asset group to estimated undiscounted future cash flows expected to be generated by the asset, or asset group. If the carrying amount of an asset or asset group exceeds its estimated undiscounted future cash flows, an impairment charge is recognized for the amount by which the carrying amount of the asset or asset group exceeds the estimated fair value of the asset or asset group. Fair value is determined based on the estimated discounted future cash flows expected to be generated by the asset or asset group. Events or changes in circumstances that may indicate that an asset is impaired include significant decreases in the market value of an asset, significant underperformance relative to expected historical or projected future results of operations, a change in the extent or manner in which an asset is utilized, significant declines in the estimated fair value of the overall Company for a sustained period, shifts in technology, loss of key management or personnel, changes in the Company’s operating model or strategy and competitive forces. There has been no occurrence of events or indications to date that would trigger an impairment. As such, no impairment charge has been recognized as of January 31, 2024. Equity Investments The Company accounts for its investments in privately held companies as equity investments and reports the investments in other non-current assets in the consolidated balance sheets. The Company chooses to measure these equity investments that do not have readily determinable fair value at cost minus any recorded impairments, adjusted for subsequent observable price changes in transactions for an identical or similar investment of the same issuers. Upon determining that an impairment or observable price change exists, the Company records any adjustment to the fair value of the investment through other income, net in the consolidated statements of operations. There was approximately $ 1.2 million of impairment recognized in the fiscal year ended January 31, 2024, while approximately $ 0.7 million of realized gain was recognized in the fiscal year ended January 31, 2023. There were no significant changes in the fair value of the investments and the Company did no t recognize any impairment losses related to these investments in the fiscal year ended January 31, 2022. Revenue Recognition In accordance with ASC 606, Revenue from Contracts with Customers, the Company recognizes revenue when control of its goods and services is transferred to its customers. Revenue recognition is evaluated through the following five steps: (i) identification of the contract, or contracts, with a customer; (ii) identification of the performance obligations in the contract; (iii) determination of the transaction price; (iv) allocation of the transaction price to the performance obligations in the contract; and (v) recognition of revenue when or as a performance obligation is satisfied. The sale of semiconductor products accounts for the substantial majority of the Company’s consolidated revenue. Sales agreements with customers are renewable periodically and contain terms and conditions with respect to payment, delivery, warranty, supply and other rights. The Company considers an accepted customer purchase order, governed by sales agreement, to be the contract with the customer. For each contract, the Company considers the promise to transfer tangible products to be the identified performance obligation. Product sales contracts may include volume-based tiered pricing or rebates that are fulfilled in cash or product. In determining the transaction price, the Company accounts for the right of returns, cash rebates, commissions and other pricing adjustments as variable consideration, estimates these amounts based on the expected amount to be provided to customers and reduces the revenue recognized. The Company estimates sales returns and rebates based on the Company’s historical patterns of return and pricing credits. As the Company’s standard payment terms are 30 days to 60 days, the contracts have no financing component. For a limited number of contracts that include volume-based tiered pricing, the Company estimates the total consideration to be received by using the expected value method for each contract, computes weighted average selling price for each unit shipped in cases where there is a material right due to the presence of volume-based tiered pricing, allocates the total consideration between the identified performance obligations, and recognizes revenue when control of its goods and services is transferred to its customers. The Company considers product control to be transferred at a point in time upon shipment or delivery because the Company has a present right to payment at that time, the customer has legal title to the asset, the Company has transferred physical possession of the asset, and the customer has significant risk and rewards of ownership of the asset. The Company also enters into various project service agreements with certain customers. These agreements may include multiple performance obligations, such as software development services, licensing of intellectual property and post-contract customer support, or PCS. These multiple performance obligations are highly interdependent, highly interrelated, are typically not sold separately and do not have standalone selling prices. They are all inputs to generate one combined output which is incorporating its SoC into the customer’s product. Accordingly, the Company determines that they are not separately identifiable and shall be treated as a single performance obligation. For fixed-price project service contracts, the Company recognizes revenue either over time as services are provided using an input method based on contract costs incurred to date compared to total estimated contract cost, or at a point in time upon completion and acceptance by the customer, depending on the terms of the arrangement. For project service contracts that are billed at a fixed rate for each hour of service provided, the Company recognizes revenue in the amount for which the Company has the right to invoice as the Company believes the amount invoiced directly corresponds with the value to the customer of its performance completed to date. 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. The Company’s contract assets are primarily related to the satisfied but unbilled performance obligations associated with project service agreements at the reporting date. As of January 31, 2024 and 2023, the contract assets for these unbilled receivables were not material, respectively. The Company’s contract liabilities consist of deferred revenue. The deferred revenue is primarily related to the nonrecurring engineering charges that are either invoiced or paid but performance obligations are not satisfied, as well as the portion of a transaction price that exceeds the weighted average selling price for products sold to date under tiered-pricing contracts that contain material rights. The deferred revenue is expected to be recognized over the period when performance obligations are satisfied associated with project service agreements, or over the course of the contract when products are delivered for future pricing below the weighted average selling price of the contract. During fiscal year 2024, the Company recognized approximately $ 2.2 million of revenue that was included in the deferred revenue balance at January 31, 2023. As of January 31, 2024, the amount of remaining unsatisfied performance obligations on contracts, primarily consisting of product purchase orders with original contract duration of more than one year , was approximately $ 6.9 million, of which approximately 96 % is expected to be recognized within the next 12 months . The Company also elects not to disclose the value of unsatisfied or partially unsatisfied performance obligations for contracts with original expected contract duration of one year or less, and elects to exclude amounts collected from customers for all sales taxes from the transaction price. Cost of Revenue Cost of revenue includes the cost of materials, such as wafers processed by third-party foundries, costs associated with packaging, assembly, testing and manufacturing support operations, such as logistics, planning and quality assurance, as well as personnel costs (including stock-based compensation) related to project service agreements. Cost of revenue also includes indirect costs, such as inventory valuation reserves, adverse purchase commitments, allocation of facility costs, amortization of developed technology and software licenses, warranty and other general overhead costs. Research and Development Research and development costs are expensed as incurred and consist primarily of personnel costs, product development costs, outside services, costs of development for software and hardware tools, costs and amortization of licensing intellectual property from third parties for product development, costs of fabrication of masks for prototype products, equipment expenses, depreciation of equipment and tools and allocation of facility costs. Selling, General and Administrative Selling, general and administrative expenses consist of personnel costs, travel and trade show costs, legal expenses, amortization of trade name and customer relationships, professional services and occupancy costs. Advertising expenses were not material for the fiscal years ended January 31, 2024, 2023 and 2022, respectively. Stock-Based Compensation The Company measures stock-based compensation for equity awards granted to employees and directors based on the estimated fair value on the grant date, and recognizes that compensation as expense using the straight-line attribution method for service condition awards or using the graded-vesting attribution method for awards with performance conditions over the requisite service period, which is typically the vesting period of each award. The Company determines the fair value of restricted stock and restricted stock units with service or performance conditions based on the fair market value of its ordinary shares on the grant date. The Company uses the Black-Scholes option pricing model to determine the fair value of stock options. Determining the fair value of stock options on the grant date requires the input of various assumptions, including stock price of the underlying ordinary share, the exercise price of the stock option, expected volatility, expected term, risk-free interest rate and dividend rate. The Company calculates expected volatility based on its own historical stock price for a period commensurate with the expected term, which is computed based on its own historical exercise behavior. The risk-free interest rate is derived from an average of the U.S. Treasury constant maturity rates for the respective periods most closely commensurate with the expected term. The expected dividend yield is zero because the Company has not historically paid dividends and has no present intention to pay dividends. The Company uses the Lattice pricing model and Monte Carlo Simulations to evaluate the fair value of awards with market conditions, including assumptions of historical volatility and risk-free interest rate commensurate with the vesting term. The Company elects to account for forfeitures as they occur. Income Taxes The Company records income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in its financial statements or tax returns. In estimating future tax consequences, generally all expected future events other than enactments or changes in the tax law or rates are considered. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized. The Company applies authoritative guidance for the accounting for uncertainty in income taxes. The guidance requires that tax effects of a position be recognized only if it is “more likely than not” to be sustained based solely on its technical merits as of the reporting date. Upon estimating its tax positions and tax benefits, the Company considers and evaluates numerous factors, which may require periodic adjustments and which may not reflect the final tax liabilities. The Company adjusts its financial statements to reflect only those tax positions that are more likely than not to be sustained under examination. As part of the process of preparing consolidated financial statements, the Company is required to estimate its taxes in each of the jurisdictions in which it operates. The Company estimates actual current tax exposure together with assessing temporary differences resulting from differing treatment of items, such as accruals and allowances not currently deductible for tax purposes. These differences result in deferred tax assets, which are included in the consolidated balance sheets. In general, deferred tax assets represent future tax benefits to be received when certain expenses previously recognized in the consolidated statements of operations become deductible expenses under applicable income tax laws, or loss or credit carryforwards are utilized. In assessing whether deferred tax assets may be realized, the Company considers whether it is more likely than not that some portion or all of deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income. The Company makes estimates and judgments about its future taxable income based on assumptions that are consistent with its plans and estimates. Should the actual amounts differ from estimates, the amount of valuation allowance could be materially impacted. Any adjustment to the deferred tax asset valuation allowance would be recorded in the consolidated statements of operations for the periods in which the adjustment is determined to be required. Net Income (Loss) Per Ordinary Share Basic earnings (losses) per share is computed by dividing net income (loss) available to ordinary shareholders by the weighted-average number of ordinary shares outstanding during the perio

Business Combination

Business Combination	12 Months Ended
Business Combination	Jan. 31, 2024
Business Combinations [Abstract]
Business Combination	2. Business Combination The Company did not enter into any business combination agreements during the fiscal years ended January 31, 2024 and 2023. The Company acquired the following business during the fiscal year ended January 31, 2022 which was accounted for as a business combination: On November 5, 2021 , pursuant to a merger agreement, the Company completed the 100 % voting rights acquisition of Oculii Corp., or Oculii, a privately-held Ohio-based company that develops adaptive radar perception algorithms for automotive, including advanced driver assistance systems, autonomous vehicle driving systems and other commercial applications, for a total purchase consideration of $ 355.7 million. As a result, there was $ 277.0 million attributed to goodwill, $ 32.8 million attributed to intangible assets and $ 45.9 million attributed to net assets acquired. Goodwill is primarily attributable to expected synergies for the combined operations and the assembled workforce acquired and is assigned to the Company’s sole reportable segment. The Company also assumed all of the unvested options to purchase Oculii capital stock that were held by continuing Oculii service providers, subject to customary adjustments with respect to the exercise price and number of shares underlying such options. The acquisition-related costs included in selling, general and administrative expense in the consolidated statements of operations were approximately $ 3.8 million in fiscal year 2022. The aggregate purchase consideration has been allocated as follows: Amount (in thousands) Cash consideration transferred $ 355,071 Net working capital adjustment 247 Fair value of stock-based compensation awards attributable to pre-combination services 407 Total purchase consideration $ 355,725 Below is a summary of intangible assets acquired in the acquisition: Acquisition Date Estimated Fair Value Useful Lives (in thousands) Trade name (1) $ 2,500 7 years Customer relationships (2) 13,200 9 years Developed technology (1) 17,100 7 years Total intangible assets acquired $ 32,800 _____________ (1) The fair values of trade name and developed technology were determined by applying the Relief-from-Royalty Method under the income approach. (2) Customer relationships represent the fair value of the existing relationships using the Multi-Period Excess Earnings Method. The finite-lived intangible assets will be amortized over the estimated useful lives based on the pattern in which the economic benefits are expected to be received to the cost of revenue and operating expenses and have a weighted average useful life of 7.8 years. Pro Forma Information (Unaudited) The following table presents unaudited pro forma information as if the acquisition of Oculii had occurred in the beginning of the applicable comparable prior annual reporting period. The unaudited pro forma information for the period indicated includes adjustments for non-recurring transaction costs, amortization of intangibles arising from the acquisition, stock-based compensation expense and the related income tax effects. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the acquisition been effected at the beginning of the period presented. In addition, these results are not intended to be a projection of future results and do not reflect events that may occur after the acquisition, including but not limited to revenue enhancements, cost savings or operating synergies that the combined entity may achieve as a result of the acquisition. Pro Forma Year Ended January 31, 2022 (unaudited, in thousands) Revenue $ 333,323 Net loss $ ( 35,330 ) Approximately $ 0.5 million of revenue and $ 6.1 million of net loss attributable to Oculii since the acquisition date of November 5, 2021 was included in the consolidated statements of operations for the fiscal year ended January 31, 2022.

Financial Instruments and Fair

Financial Instruments and Fair Value	12 Months Ended
Financial Instruments and Fair Value	Jan. 31, 2024
Investments, All Other Investments [Abstract]
Financial Instruments and Fair Value	3. Financial Instruments and Fair Value The Company invests a portion of its cash in money market funds and debt securities that are denominated in United States dollars. The debt security investment portfolio consists of commercial paper, corporate bonds, asset-backed securities and U.S. government securities. All of the investments are classified as available-for-sale securities and reported at fair value in the consolidated balance sheets as follows: As of January 31, 2024 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in thousands) Money market funds $ 296 $ — $ — $ 296 Commercial paper 30,806 — — 30,806 Corporate bonds 38,867 180 ( 135 ) 38,912 Asset-backed securities 15,212 14 ( 96 ) 15,130 U.S. government securities 21,118 — ( 146 ) 20,972 Total cash equivalents and marketable debt securities $ 106,299 $ 194 $ ( 377 ) $ 106,116 As of January 31, 2023 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in thousands) Money market funds $ 7,872 $ — $ — $ 7,872 Commercial paper 18,333 — — 18,333 Corporate bonds 23,472 50 ( 224 ) 23,298 Asset-backed securities 18,753 44 ( 149 ) 18,648 U.S. government securities 33,256 22 ( 235 ) 33,043 Total cash equivalents and marketable debt securities $ 101,686 $ 116 $ ( 608 ) $ 101,194 The following table provides the breakdown of unrealized losses as of January 31, 2024, aggregated by investment category and length of time that individual securities have been in a continuous loss position: As of January 31, 2024 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate bonds $ 9,050 $ ( 19 ) $ 8,363 $ ( 116 ) $ 17,413 $ ( 135 ) Asset-backed securities 4,821 ( 15 ) 6,289 ( 81 ) 11,110 ( 96 ) U.S. government securities 15,020 ( 65 ) 5,952 ( 81 ) 20,972 ( 146 ) Total marketable debt securities at loss position $ 28,891 $ ( 99 ) $ 20,604 $ ( 278 ) $ 49,495 $ ( 377 ) As of January 31, 2023, there were no money market funds or debt securities with unrealized losses for more than twelve months. As of January 31, 2024 January 31, 2023 (in thousands) Included in cash equivalents $ 31,103 $ 7,872 Included in marketable debt securities 75,013 93,322 Total cash equivalents and marketable debt securities $ 106,116 $ 101,194 The contractual maturities of the investments at January 31, 2024 and 2023 were as follows: As of January 31, 2024 January 31, 2023 (in thousands) Due within one year $ 50,216 $ 48,016 Due in 1-5 years 55,900 52,414 Due in 5-7 years — 764 Total cash equivalents and marketable debt securities $ 106,116 $ 101,194 The unrealized gains and losses on the available-for-sale securities were primarily caused by fluctuations in market value and interest rates as a result of the economic environment. In accordance with ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, the Company estimates the expected losses at an individual security level whenever a security’s fair value is below its amortized cost basis using the discounted cash flow method. The credit-related portion of the loss is recognized in other income, net in the consolidated statements of operations but is limited to the difference between the fair value and the amortized cost basis of the security, adjusted for accrued interest. The non-credit-related portion of the loss is recognized in accumulated other comprehensive loss in the consolidated balance sheets. The credit-related losses were not material for the fiscal years ended January 31, 2024, 2023 and 2022, respectively. Interest income, including amortization of premiums and accretion of discounts related to the investments, as well as realized gains and losses from sales of the investments are recorded in other income, net, in the consolidated statements of operations. For the fiscal years ended January 31, 2024, 2023, and 2022, interest income and realized gains and losses, net, were approximately $ 4.7 million, $ 1.7 million and $ 1.7 million, respectively. The following fair value hierarchy is applied for disclosure of the inputs used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows: Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities. Level 2—Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instruments. Level 3—Unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value. The inputs require significant management judgment or estimation. The Company measures the fair value of money market funds using quoted prices in active markets for identical assets and classifies them within Level 1. The fair value of the Company’s investments in other debt securities are obtained based on quoted prices for similar assets in active markets and are classified within Level 2. The following tables present the fair value of the financial instruments measured on a recurring basis as of January 31, 2024 and 2023, respectively: As of January 31, 2024 Total Level 1 Level 2 Level 3 (in thousands) Money market funds $ 296 $ 296 $ — $ — Commercial paper 30,806 — 30,806 — Corporate bonds 38,912 — 38,912 — Asset-backed securities 15,130 — 15,130 — U.S. government securities 20,972 — 20,972 — Total cash equivalents and marketable debt securities $ 106,116 $ 296 $ 105,820 $ — As of January 31, 2023 Total Level 1 Level 2 Level 3 (in thousands) Money market funds $ 7,872 $ 7,872 $ — $ — Commercial paper 18,333 — 18,333 — Corporate bonds 23,298 — 23,298 — Asset-backed securities 18,648 — 18,648 — U.S. government securities 33,043 — 33,043 — Total cash equivalents and marketable debt securities $ 101,194 $ 7,872 $ 93,322 $ — In addition to the available-for-sale securities, the Company also has fixed deposit accounts that are classified as cash equivalents. As of January 31, 2024, the total fair value of $ 7.0 million with fixed deposit accounts was considered to be equal to their book value.

Inventories

Inventories	12 Months Ended
Inventories	Jan. 31, 2024
Inventory Disclosure [Abstract]
Inventories	4. Inventories Inventories at January 31, 2024 and 2023 consisted of the following: As of January 31, 2024 2023 (in thousands) Work-in-progress $ 18,933 $ 26,023 Finished goods 10,110 14,463 Total $ 29,043 $ 40,486

Property and Equipment, Net

Property and Equipment, Net	12 Months Ended
Property and Equipment, Net	Jan. 31, 2024
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	5. Property and Equipment, net Depreciation expense was approximately $ 4.8 million, $ 3.9 million and $ 2.8 million for the fiscal years ended January 31, 2024, 2023 and 2022, respectively. Property and equipment at January 31, 2024 and 2023 consisted of the following: As of January 31, 2024 2023 (in thousands) Computer hardware and software $ 23,518 $ 20,733 Tools and equipment 8,564 8,325 Furniture and fixtures 1,351 1,311 Leasehold improvements 3,440 3,295 Construction in progress 166 513 37,039 34,177 Less: accumulated depreciation and amortization ( 26,600 ) ( 22,363 ) Total property and equipment, net $ 10,439 $ 11,814

Intangible Assets, Net

Intangible Assets, Net	12 Months Ended
Intangible Assets, Net	Jan. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets, Net	6. Intangible Assets, net Intangible assets primarily consist of software licenses as well as developed technology, customer relationships and trade name that were acquired from business combinations. In fiscal year 2022, the Company determined that the underlying project incorporating IPR&D from the prior acquisition of VisLab S.r.l., or VisLab, was completed. As a result, the $ 4.1 million of IPR&D was reclassified as definite-lived developed technology and started amortization over its estimated economic life of 7 years . The Company enters into certain software license agreements with third parties from time-to-time. The software licenses consist of noncancelable on-premise internal-use software and software with alternative use that is to be sold, leased or otherwise marketed as part of a product. The licenses have been capitalized as intangible assets and the corresponding future payments have been recorded as liabilities at net present value. As of January 31, 2024, $ 8.2 million was recorded in accrued and other current liabilities and $ 8.3 million was recorded in other long-term liabilities in the consolidated balance sheets. The components of intangible assets as of January 31, 2024 and 2023 were as follows: As of January 31, 2024 As of January 31, 2023 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in thousands) Software licenses $ 41,329 $ ( 12,029 ) $ 29,300 $ 34,128 $ ( 6,319 ) $ 27,809 Developed technology 21,200 ( 6,961 ) 14,239 21,200 ( 3,932 ) 17,268 Customer relationships 13,200 ( 3,300 ) 9,900 13,200 ( 1,833 ) 11,367 Trade name 2,500 ( 803 ) 1,697 2,500 ( 447 ) 2,053 Total intangible assets, net $ 78,229 $ ( 23,093 ) $ 55,136 $ 71,028 $ ( 12,531 ) $ 58,497 During the twelve months ended January 31, 2024, there were approximately $ 13.0 million of software licenses purchased and approximately $ 5.8 million of software licenses retired. The amortization expense associated with software licenses was approximately $ 11.5 million, $ 7.5 million and $ 6.4 million for the fiscal years ended January 31, 2024, 2023 and 2022, respectively. The amortization expense associated with acquisition-related intangible assets, including developed technology, customer relationship and trade name, was approximately $ 4.9 million, $ 4.9 million and $ 1.4 million for the fiscal years ended January 31, 2024, 2023 and 2022, respectively. As of January 31, 2024, the Company has not commenced amortization with respect to approximately $ 9.4 million of software licenses with alternative uses that are to be sold, leased or otherwise marketed as part of products. Once the associated products are available for general release to customers, the Company will commence amortization on a product-by-product basis over the remaining estimated economic life of the products. The expected future amortization expense related to these intangible assets as of January 31, 2024 is as follows: As of January 31, 2024 Fiscal Year (in thousands) 2025 $ 14,878 2026 12,548 2027 7,669 2028 6,127 2029 5,834 Thereafter 8,080 Total future amortization expenses: $ 55,136 Intangible assets are tested for impairment at least annually, in the fourth fiscal quarter, or more frequently if events or changes in circumstances indicate that the assets may be impaired. The Company is also required to test the impairment prior to changing the IPR&D from an indefinite-lived asset to a finite-lived asset. There were no intangible asset impairments for the fiscal years ended January 31, 2024, 2023 and 2022, respectively.

Goodwill

Goodwill	12 Months Ended
Goodwill	Jan. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	7. Goodwill Goodwill represents the excess of the purchase price over the fair value of net tangible and identifiable intangible assets acquired in a business combination. The Company has one reporting segment and accordingly, there is no goodwill assignment based on reporting units (refer to Note 16). As of January 31, 2024 and 2023, the total carrying amount of goodwill was $ 303.6 million, respectively. The Company does not amortize goodwill. In the fourth quarter of fiscal year 2024, 2023 and 2022, the Company performed annual goodwill tests and there were no goodwill impairments for the fiscal years ended January 31, 2024, 2023 and 2022, respectively.

Accrued and Other Current Liabi

Accrued and Other Current Liabilities	12 Months Ended
Accrued and Other Current Liabilities	Jan. 31, 2024
Payables and Accruals [Abstract]
Accrued and Other Current Liabilities	8. Accrued and Other Current Liabilities Accrued and other current liabilities at January 31, 2024 and 2023 consisted of the following: As of January 31, 2024 2023 (in thousands) Accrued employee compensation $ 16,610 $ 22,152 Accrued product development costs 18,290 19,433 Software license liabilities, current 8,161 7,059 Other accrued liabilities 5,537 8,011 Total accrued and other current liabilities $ 48,598 $ 56,655 Approximately $ 5.6 million of annual bonus included in the accrued employee compensation was paid in fiscal year 2024, of which $ 1.1 million was paid in cash and $ 4.5 million was settled with restricted stock units.

Leases

Leases	12 Months Ended
Leases	Jan. 31, 2024
Leases [Abstract]
Leases	9. Leases There were no material lease agreements entered or modified during the twelve months ended January 31, 2024. During the twelve months ended January 31, 2023, the Company extended leases for its Shenzhen office and one of its facilities in Santa Clara, California for an additional two years beginning October 1, 2022 to September 30, 2024 . For the lease extensions, the Company recorded an increase to the operating lease ROU assets and corresponding operating lease liabilities of approximately $ 0.8 million in the consolidated balance sheets. During the twelve months ended January 31, 2022, the Company extended its existing Shanghai office lease for an additional three years beginning December 1, 2021 to November 30, 2024 and extended its existing Hong Kong office lease for an additional five years beginning December 1, 2021 to November 30, 2026 . The Company also leased an additional space for its Shanghai office for a period of 40 months starting from August 1, 2021 through November 30, 2024 . The Company recorded an aggregate increase of approximately $ 4.4 million to the operating lease ROU assets and corresponding operating lease liabilities in the consolidated balance sheets as a result of these lease extensions and additional leased space. For the fiscal years ended January 31, 2024, 2023 and 2022, the operating lease expense was approximately $ 3.7 million, $ 3.7 million and $ 3.5 million, respectively. The Company's short-term leases and finance leases were immaterial as of January 31, 2024 and 2023, respectively. Supplemental cash flow information related to the operating leases is as follows: Year Ended January 31, 2024 January 31, 2023 (in thousands) Cash paid for operating leases included in operating cash flows $ 3,877 $ 4,011 Supplemental non-cash information related to lease liabilities arising from obtaining right-of-use assets $ 216 $ 319 Leased assets changes arising from lease modifications $ 348 $ 575 As of January 31, 2024, the weighted average remaining lease term is 1.77 years, and the weighted average discount rate is 3.63 %. Future minimum lease payments for the lease liabilities are as follows: As of January 31, 2024 Fiscal Year (in thousands) 2025 $ 3,567 2026 1,536 2027 291 2028 74 2029 — Thereafter — Total future annual minimum lease payments 5,468 Less: interest ( 129 ) Total lease liabilities $ 5,339

Other Long-Term Liabilities

Other Long-Term Liabilities	12 Months Ended
Other Long-Term Liabilities	Jan. 31, 2024
Other Liabilities Disclosure [Abstract]
Other Long-Term Liabilities	10. Other Long-Term Liabilities Other long-term liabilities at January 31, 2024 and 2023 consisted of the following: As of January 31, 2024 2023 (in thousands) Unrecognized tax benefits, including interest $ 3,762 $ 3,770 Deferred tax liabilities 855 1,120 Software license liabilities, non-current 8,288 9,614 Other long-term liabilities 4 1,044 Total other long-term liabilities $ 12,909 $ 15,548

Capital Stock

Capital Stock	12 Months Ended
Capital Stock	Jan. 31, 2024
Equity [Abstract]
Capital Stock	11. Capital Stock Preference shares Since the Company’s initial public offering, or IPO, a total of 20,000,000 preference shares, with a $ 0.00045 par value per share, were authorized. There were no preference shares issued and outstanding as of January 31, 2024 and 2023, respectively. Ordinary shares As of January 31, 2024 and 2023, the following ordinary shares were reserved for future issuance under the Company’s equity plans and employee stock purchase plan: As of January 31, 2024 2023 Shares reserved for options, restricted stock and restricted stock units under equity plans 4,492,705 5,822,819 Shares reserved for employee stock purchase plan 2,834,384 2,986,403 Shares repurchased There were no shares repurchased in fiscal years 2024, 2023 and 2022. On May 26, 2023, the Company's Board of Directors approved an extension of the existing share repurchase program for an additional twelve months through June 30, 2024 . As of January 31, 2024, there was approximately $ 49.0 million available for repurchases through June 30, 2024. Repurchases under the program may be made from time-to-time through open market purchases, 10b5-1 plans or privately negotiated transactions subject to market conditions, applicable legal requirements and other relevant factors. The repurchase program does not obligate the Company to acquire any particular amount of ordinary shares, and it may be suspended at any time at the company's discretion. Repurchases are funded using working capital and any repurchased shares will be recorded as authorized but unissued shares.

Employee Benefits and Stock-bas

Employee Benefits and Stock-based Compensation	12 Months Ended
Employee Benefits and Stock-based Compensation	Jan. 31, 2024
Postemployment Benefits [Abstract]
Employee Benefits and Stock-based Compensation	12. Employee Benefits and Stock-based Compensation 401(k) Plan The Company maintains a defined contribution 401(k) plan (the 401(k) Plan) for all of its eligible U.S. employees. Under the 401(k) Plan, eligible employees may contribute up to the Internal Revenue Service annual contribution limitation. The Company is responsible for administrative costs of the Plan. The Company’s contribution expense for the fiscal years ended January 31, 2024, 2023, and 2022 was approximately $ 0.8 million, $ 0.8 million and $ 0.6 million, respectively. Stock Option Plans 2012 Equity Incentive Plan. The 2012 Equity Incentive Plan, or 2012 EIP, permits the grant of ISOs, within the meaning of Section 422 of the Code, to employees of the Company and any of the Company’s subsidiary corporations, and the grant of NSOs, stock appreciation rights, restricted stock, restricted stock units, performance units, performance shares, deferred stock units and dividend equivalents to employees, directors and consultants of the Company and any of the Company’s subsidiary corporations’ employees and consultants. 2021 Equity Incentive Plan. In June 2021, the Company’s shareholders approved the 2021 Equity Incentive Plan, or 2021 EIP. The 2021 EIP permits the grant of ISOs, within the meaning of Section 422 of the Code, to employees of the Company and any of the Company’s subsidiary or parent corporations, and the grant of NSOs, stock appreciation rights, restricted stock, restricted stock units, and performance awards to employees, directors and consultants of the Company and any of the Company’s subsidiary or parent corporations’ employees and consultants. Upon adoption of the 2021 EIP, the total number of ordinary shares of the Company reserved for issuance under the 2021 Plan was equal to, subject to adjustments upon changes in capitalization as provided under the 2021 EIP, 1,350,000 ordinary shares, plus (i) any ordinary shares subject to outstanding awards granted under the 2012 EIP, that, after the date the 2012 EIP is terminated, are cancelled, expire or otherwise terminate without having been exercised in full or are forfeited to or repurchased by the Company due to failure to vest, and (ii) any ordinary shares that, as of immediately prior to the termination of the 2012 EIP, were available for grant under the 2012 EIP, up to a maximum of 6,834,208 ordinary shares pursuant to clauses (i) and (ii). In the first quarter of fiscal year 2022, the Company added 1,599,634 shares to the ordinary shares reserved for issuance, pursuant to an “evergreen” provision contained in the 2012 EIP. Upon the approval of the 2021 EIP, the 2012 EIP was terminated. No additional awards will be granted under the 2012 EIP and any shares that were reserved but not issued under the 2012 EIP became available for future grant or sale under the 2021 EIP. However, all outstanding stock options and other awards previously granted under the 2012 EIP will remain subject to the terms of the 2012 EIP. Oculii Corp. 2017 Stock Option Plan. In November 2021, the Company assumed the Oculii Corp. 2017 Stock Option Plan, or 2017 Plan, as part of the acquisition of Oculii. No additional awards will be granted under the 2017 Plan. However, all outstanding stock options previously granted under the 2017 Plan will remain subject to the terms of the 2017 Plan and any outstanding stock options that are cancelled or forfeited due to failure to vest will immediately expire from the 2017 Plan. The exercise price of ISOs granted to a holder of more than 10 % of the voting power of all classes of the Company’s shares shall be no less than 110 % of fair market value on the grant date. The exercise price of ISOs granted to other employees and NSOs shall be no less than 100 % of fair market value on the grant date. Options granted under the Plan have a term of up to 10 years from grant date. Options granted to new employees generally vest 25% on the first anniversary service date of the grant and the remainder vest ratably over the following 36 months. Restricted stock and restricted stock units granted to new employees generally vest as to 1/4th of the shares on the first anniversary service date of the grant and 1/16th of the shares vest every 3 months thereafter, so as to be 100% vested on the fourth anniversary of the vesting commencement date. Vesting schedules for other service condition, market condition or performance condition awards vary and are subject to approval by the Board of Directors; provided that the performance condition associated awards shall not vest at all until the performance conditions are achieved and are subject to the award’s holders continuing to provide services to the Company through such vesting dates. The performance condition awards are automatically forfeited in their entirety, without any cost to or action by the Company, if there has been no achievement of the performance. The holders of restricted stock have voting power and other rights with respect to such shares, provided, however, that such shares are held in escrow and subject to forfeiture until the shares vested. Amended and Restated 2012 Employee Stock Purchase Plan. The Amended and Restated 2012 Employee Stock Purchase Plan, or ESPP, permits eligible participants to purchase ordinary shares at a discount through contributions up to 15 % of their eligible compensation, subject to any IRS limitations. The ESPP provides each offering and purchasing period of six months in duration. The purchase price is 85 % of the lower of the closing price of the Company’s ordinary shares on the first trading day of each offering period or on the purchase date. In the first quarter of fiscal year 2024 and 2023, the Company added 488,037 and 466,285 shares, respectively, to the ordinary shares reserved for issuance, pursuant to an “evergreen” provision contained in the ESPP. Pursuant to such provision, on February 1st of each fiscal year, the number of ordinary shares reserved for issuance under the ESPP is automatically increased by a number equal to the lesser of (i) 1,500,000 ordinary shares, (ii) one and one quarter percent ( 1.25 %) of the aggregate number of ordinary shares outstanding on such date, or (iii) an amount determined by the Company’s Board of Directors or a duly authorized committee of the Board of Directors. Stock-based Compensation The following table presents the classification of stock-based compensation for the periods indicated: Year Ended January 31, 2024 2023 2022 (in thousands) Stock-based compensation: Cost of revenue $ 3,341 $ 3,597 $ 1,489 Research and development 72,759 71,236 54,787 Selling, general and administrative 35,216 36,325 31,525 Total stock-based compensation $ 111,316 $ 111,158 $ 87,801 As of January 31, 2024 and 2023, approximately $ 3.6 million and $ 4.6 million of stock-based compensation expense, respectively, was accrued in accrued and other current liabilities in the consolidated balance sheets. Total unrecognized compensation cost related to unvested stock options at January 31, 2024 was $ 6.7 million and is expected to be recognized over a weighted-average period of 1.25 years. Total unrecognized compensation cost related to unvested restricted stock units at January 31, 2024 was $ 165.5 million and is expected to be recognized over a weighted-average period of 2.43 years. In fiscal year 2024, the Company entered into a separation agreement and release with an executive associated with the retirement for his continued service through the separation date. The separation agreement provided for acceleration of vesting of 24,559 shares of restricted stock units and a one-time compensation of $ 693,000 which is expected to be settled through the issuance of restricted stock units with equivalent value. In accordance with the applicable accounting guidance, the one-time compensation was also recorded as stock-based compensation. As a result, there was approximately $ 1.6 million of additional stock-based compensation expense, net, recognized associated with the separation in the fiscal year ended January 31, 2024. In fiscal year 2023, the Company’s Compensation Committee of the Board of Directors approved the acceleration of vesting of 35,703 shares of unvested equity awards associated with the departure of an executive. As a result, there was approximately $ 1.7 million of additional stock-based compensation expense, net, recognized in the fiscal year ended January 31, 2023. The following table sets forth the weighted-average assumptions used to estimate the fair value of stock options and employee stock purchase plan awards for the periods indicated: Year Ended January 31, 2024 2023 2022 Stock Options: Volatility — — 51 % Risk-free interest rate — — 1.04 % Expected term (years) — — 5.06 Dividend yield — — 0 % Employee stock purchase plan awards: Volatility 56 % 81 % 57 % Risk-free interest rate 5.11 % 2.32 % 0.06 % Expected term (years) 0.5 0.5 0.5 Dividend yield 0 % 0 % 0 % The following table summarizes stock option activities for the periods indicated: Option Outstanding Weighted- Total Intrinsic Average Weighted- Weighted- Value of Remaining Aggregate Weighted- Average Average options Contractual Intrinsic Average Grant-date Acquisition-date Exercised Term Value Shares Exercise Price Fair Value Fair Value (in thousands) (in years) (in thousands) Outstanding at January 31, 2021 719,143 $ 38.33 Granted 14,700 110.19 $ 50.28 Assumed 163,581 23.10 $ 173.04 Exercised ( 269,287 ) 28.23 $ 25,622 Forfeited ( 7,669 ) 68.95 Expired ( 1,146 ) 9.86 Outstanding at January 31, 2022 619,322 40.08 Exercised ( 121,624 ) 30.34 $ 6,712 Forfeited ( 10,618 ) 55.97 Expired ( 2,289 ) 39.19 Outstanding at January 31, 2023 484,791 42.18 Exercised ( 104,931 ) 26.06 $ 4,479 Forfeited ( 926 ) 42.59 Expired ( 5,616 ) 63.39 Outstanding at January 31, 2024 373,318 46.39 3.43 $ 16,454 Exercisable at January 31, 2024 326,464 $ 47.75 2.95 $ 13,920 The intrinsic value of options outstanding and exercisable is calculated based on the difference between the fair market value of the Company’s ordinary shares on the reporting date and the exercise price. The closing price of the Company’s stock was $ 52.56 on January 31, 2024, as reported by The NASDAQ Global Select Market. The intrinsic value of exercised options is calculated based on the difference between the fair market value of the Company’s stock on the exercise date and the exercise price. The following table summarizes restricted stock unit activities for the periods indicated: Weighted- Average Grant-Date Shares Fair Value Unvested at January 31, 2021 2,871,801 $ 51.73 Granted 1,213,257 128.80 Vested ( 1,367,309 ) 53.85 Forfeited ( 66,614 ) 71.59 Unvested at January 31, 2022 2,651,135 85.41 Granted 1,549,174 74.45 Vested ( 1,513,972 ) 71.32 Forfeited ( 112,978 ) 99.46 Unvested at January 31, 2023 2,573,359 86.81 Granted 1,305,401 70.32 Vested ( 1,220,608 ) 78.62 Forfeited ( 225,512 ) 81.79 Unvested at January 31, 2024 2,432,640 $ 82.54 Total fair value of restricted stock units vested as of the respective vesting dates for the fiscal years ended January 31, 2024, 2023 and 2022 was approximately $ 88.0 million, $ 122.0 million, and $ 192.5 million, respectively. As of January 31, 2024, the aggregate intrinsic value of unvested restricted stock units was $ 127.9 million.

Net Loss Per Ordinary Share

Net Loss Per Ordinary Share	12 Months Ended
Net Loss Per Ordinary Share	Jan. 31, 2024
Earnings Per Share [Abstract]
Net Loss Per Ordinary Share	13. Net Loss Per Ordinary Share The following table sets forth the computation of basic and diluted net loss per ordinary share for the periods indicated: Year Ended January 31, 2024 2023 2022 (in thousands, except share and per share data) Numerator: Net loss $ ( 169,417 ) $ ( 65,386 ) $ ( 26,411 ) Denominator: Weighted-average ordinary shares - basic 39,878,872 38,363,638 36,577,120 Weighted-average ordinary shares - diluted 39,878,872 38,363,638 36,577,120 Net loss per ordinary share: Basic $ ( 4.25 ) $ ( 1.70 ) $ ( 0.72 ) Diluted $ ( 4.25 ) $ ( 1.70 ) $ ( 0.72 ) The following weighted-average potentially dilutive securities were excluded from the computation of diluted net loss per ordinary share as their effect would have been antidilutive: Year Ended January 31, 2024 2023 2022 Options to purchase ordinary shares 234,088 336,828 327,747 Restricted stock units 1,549,026 1,550,679 1,388,091 Employee stock purchase plan 10,483 10,883 8,904 1,793,597 1,898,390 1,724,742

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Jan. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	14. Income Taxes Loss before income taxes consisted of the following for the periods indicated: Year Ended January 31, 2024 2023 2022 (in thousands) U.S. operations $ ( 33,953 ) $ ( 18,968 ) $ ( 5,842 ) Non-U.S. operations ( 114,577 ) ( 51,970 ) ( 22,799 ) Loss before income taxes $ ( 148,530 ) $ ( 70,938 ) $ ( 28,641 ) Income tax provision (benefit) consisted of the following for the periods indicated: Year Ended January 31, 2024 2023 2022 (in thousands) Current: U.S. federal tax $ 303 $ ( 3,525 ) $ 907 U.S. state taxes 1 175 — Non-U.S. foreign taxes 1,711 2,395 1,778 2,015 ( 955 ) 2,685 Deferred: U.S. federal tax 18,909 ( 4,231 ) ( 4,819 ) U.S. state taxes — — ( 14 ) Non-U.S. foreign taxes ( 37 ) ( 366 ) ( 82 ) 18,872 ( 4,597 ) ( 4,915 ) Provision (benefit) for income taxes $ 20,887 $ ( 5,552 ) $ ( 2,230 ) The Company consists of a Cayman Islands parent company with various foreign and U.S. subsidiaries. Effective December 31, 2019, the Company has structured its activities to comply with the International Tax Co-Operation (Economic Substance) Law, 2018 in the Cayman Islands. As part of the new structure, the Company is the general partner of a Canadian limited partnership, the ultimate beneficial owner, and is allocated all of the earnings of the partnership. The primary jurisdiction where our foreign earnings are derived is the Cayman Islands, where the Company is domiciled. Under the current laws of the Cayman Islands, the Company is not subject to tax on its income. For purposes of the reconciliation between the provision (benefit) for income taxes at the statutory rate and the effective tax rate, a notional U.S. 21 % rate is applied to pretax income (loss) as a result of the following for the periods indicated, respectively: Year Ended January 31, 2024 2023 2022 (in thousands) Provision at U.S. notional statutory rate $ ( 31,191 ) $ ( 14,897 ) $ ( 6,015 ) U.S. state taxes 6 114 ( 11 ) Non-U.S. foreign tax differential 25,736 12,943 6,483 Stock-based compensation 4,847 10,004 1,900 U.S. R&D credit ( 7,232 ) ( 5,045 ) ( 5,886 ) Valuation allowance 28,311 2,124 765 FIN48 interest 45 ( 739 ) 311 Uncertain tax position release — ( 10,188 ) — Other 365 132 223 Provision (benefit) for income taxes $ 20,887 $ ( 5,552 ) $ ( 2,230 ) Temporary differences that gave rise to significant portions of the Company’s deferred tax assets and liabilities at January 31, 2024 and 2023 were as follows: As of January 31, 2024 2023 (in thousands) Deferred tax assets: Federal and state credits $ 51,344 $ 40,134 Net operating losses 6,099 6,659 Expenses not currently deductible 3,988 3,164 Operating lease liabilities 1,009 1,582 Stock-based compensation 3,820 3,678 Other deferred tax assets 220 262 Gross deferred tax assets 66,480 55,479 Valuation allowance ( 60,036 ) ( 28,596 ) Total deferred tax assets $ 6,444 $ 26,883 Deferred tax liabilities Intangible assets ( 5,722 ) ( 6,782 ) Property and equipment ( 460 ) ( 617 ) Operating lease assets ( 918 ) ( 1,452 ) Net deferred tax assets (liabilities) $ ( 656 ) $ 18,032 Tax valuation allowance for the periods indicated below were as follows: Deductions Additions Charged to Balance at Additions Charged to Expenses Balance at Beginning of Charged to Other or Other End of Period Expenses Account Accounts Period (in thousands) Tax Valuation Allowance Year ended January 31, 2024 $ 28,596 31,440 — — $ 60,036 Year ended January 31, 2023 $ 24,083 4,513 — — $ 28,596 Year ended January 31, 2022 $ 17,962 4,874 1,247 — $ 24,083 The Company conducts its business in several countries and regions and is subject to taxation in those jurisdictions. The Company is incorporated in the Cayman Islands with foreign subsidiaries in the U.S., China, Taiwan, Italy and other foreign countries and regions. As such, the Company’s worldwide operating income is subject to varying tax rates and its effective tax rate is highly dependent upon the geographic distribution of its earnings or losses and the tax laws and regulations in each geographical region. Consequently, the Company has experienced lower effective tax rates as a substantial amount of its operations are conducted in lower-tax jurisdictions. If the Company’s operational structure was to change in such a manner that would increase the amount of operating income subject to taxation in higher-tax jurisdictions, or if the Company was to commence operations in jurisdictions assessing relatively higher tax rates, its effective tax rate could fluctuate significantly on a quarterly basis and/or be adversely affected. Dividend distributions received from the Company’s U.S. subsidiary and certain other foreign subsidiaries may be subject to local country withholding taxes when, and if, distributed. Deferred tax liabilities have not been recorded on unremitted earnings of certain subsidiaries because management’s intent is to indefinitely reinvest any undistributed earnings in those subsidiaries. If dividend distributions from those subsidiaries were to occur, the liability as of January 31, 2024 would be approximately $ 7.8 million. Cumulative undistributed earnings of foreign subsidiaries for which no deferred taxes have been provided were approximated $ 86.4 million at January 31, 2024. As of January 31, 2024, and 2023, the Company had net deferred tax liabilities after valuation allowance of $ 0.7 million and net deferred tax assets after valuation allowance of $ 18.0 million, respectively. The decrease in net deferred tax assets is primarily due to an increase in valuation allowance established against certain U.S. net deferred tax assets as of January 31, 2024. The Company evaluated the need for a valuation allowance by considering among other things, the nature, frequency and severity of current losses, reversal of taxable temporary differences, tax planning strategies, future projections in the U.S. and the duration of statutory carryforward periods. The Company determined in the fourth quarter of fiscal year 2024, that the negative evidence outweighed the positive evidence and determined that it is no longer more likely than not that the net deferred tax assets in the federal and state jurisdiction will be realized as of January 31, 2024. Among this negative evidence is the current year losses of the Company's federal tax consolidated group for tax purposes, the projected U.S. cumulative loss position of the Company's federal tax consolidated group and the inability to generate sources of income to utilize its federal and state attributes. The Company has Federal and California net operating losses of $ 28.7 million and $ 1.0 million, respectively, as of January 31, 2024. The Federal net operating loss can be carried forward indefinitely, if not utilized. The California net operating loss begin to expire in fiscal year 2040 , if not utilized. For financial statement purposes these carry forwards are offset by uncertain tax positions. The Company also has Federal and California state research and development credit carryforwards of approximately $ 24.0 million and $ 34.6 million, respectively, as of January 31, 2024. The Federal credits begin to expire in the fiscal year 2036 . The California credits can be carried forward indefinitely. Utilization of the net operating loss and research credit carryforwards may be subject to an annual limitation due to the ownership percentage change limitations as defined by the U.S. Internal Revenue Code Section 382, as amended, and similar state provisions as well as separate return year limitation which limits the utilization of loss generated before a company joins the consolidated filing group. The annual limitations may result in the expiration of the U.S. Federal and state net operating loss (NOL) and research credit carryforwards before utilization. The Company has a full valuation allowance against all U.S. deferred tax assets due to lack of more likely than not future utilization of these deferred tax assets. The Company applies the provisions of FASB’s guidance on accounting for uncertainty in income taxes. As of January 31, 2024, the Company had approximately $ 22.6 million in unrecognized tax benefits, $ 3.1 million of which would affect the Company’s effective tax rate if recognized. The remainder of the unrecognized tax benefits would not affect the effective tax rate due to the full valuation recorded for U.S. deferred tax assets. The following table sets forth a reconciliation of the beginning and ending amount of unrecognized tax benefits: Year Ended January 31, 2024 2023 2022 (in thousands) Beginning balance: $ 21,656 $ 30,884 $ 29,527 Additions based on tax positions related to the 997 1,033 1,412 Additions for tax positions of prior years 168 195 55 Reductions for tax positions in prior years ( 38 ) ( 45 ) — Settlements for prior periods — — — Lapse of applicable statute of limitations ( 155 ) ( 10,411 ) ( 110 ) Ending balance: $ 22,628 $ 21,656 $ 30,884 The Company classified $ 3.1 million and $ 3.2 million of income tax liabilities as other long-term liabilities as of January 31, 2024, and 2023, respectively, because payment of cash or settlement is not anticipated within one year from the balance sheet date. The Company recognizes interest and penalties related to uncertain tax positions as a component of income tax expense. The Company recorded an expense of $ 0.05 million, benefit of $ 0.7 million and expense of $ 0.3 million for interest and penalties related to uncertain tax positions for the fiscal years ended January 31, 2024, 2023 and 2022, respectively. The Company recorded noncurrent liabilities of $ 0.7 million and $ 0.6 million related to interest and penalties for uncertain tax positions at January 31, 2024 and 2023, respectively. The primary jurisdiction where our foreign earnings are derived is the Cayman Islands, where the Company is domiciled. The Company files income tax returns in the U.S. federal jurisdiction as well as many U.S. state and foreign jurisdictions. As of January 31, 2024, the Company’s fiscal year 2021 through 2024 tax years are generally open and subject to potential examination by U.S. federal tax authorities. The Company’s fiscal year 2020 through 2024 tax years are generally open and subject to potential examination by state tax authorities. The Company’s fiscal years 2017 to 2024 remain open to examination by foreign tax authorities. Fiscal years outside of the normal statute of limitations remain open to audit by tax authorities due to tax attributes generated in those earlier years, which have been carried forward and may be audited in subsequent years when utilized. The Company regularly assesses the likelihood of adverse outcomes resulting from potential tax examinations to determine the adequacy of its provision for income taxes. These assessments can require considerable estimates and judgments. During the fiscal year ended January 31, 2024, the gross amount of unrecognized tax benefits increased by approximately $ 1.0 million to $ 22.6 million. The increase was primarily due to changes to our uncertain tax positions related to research credits. If the estimates of income tax liabilities prove to be less than the ultimate assessment, then a further charge to expense could be required. If events occur, and the payment of these amounts ultimately proves to be unnecessary, the reversal of the liabilities could result in tax benefits being recognized in the period in which the Company determines the liabilities are no longer necessary. It is reasonably possible that within the next 12 months the Company's unrecognized tax benefits could potentially be reduced by up to $ 9.0 million. As of January 31, 2024, the Company’s long-term income taxes payable, including estimated interest and penalties, was approximately $ 3.8 million. The Company was unable to make a reasonably reliable estimate of the timing of payments in individual years due to uncertainties in the timing of tax audits, if any, or their outcomes. On July 27, 2015, the United States Tax Court issued a decision (“Tax Court Decision”) in Altera Corp. v. Commissioner, which concluded that related parties in a cost sharing arrangement are not required to share expenses related to share-based compensation. The Tax Court Decision was appealed by the Commissioner to the Ninth Circuit Court of Appeals (“Ninth Circuit”). On June 7, 2019, the Ninth Circuit issued an opinion that reversed the Tax Court Decision. On July 22, 2019, the taxpayer requested a rehearing before the full Ninth Circuit and the request was denied on November 12, 2019. On February 10, 2020, the taxpayer filed a petition to appeal the decision with the Supreme Court of the United States which was denied on June 22, 2020. The denial of the request by the Supreme Court did not have a material impact to the Company’s provision for income taxes.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Jan. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	15. Commitments and Contingencies Contract Manufacturer Commitments The Company’s components and products are procured and built by independent contract manufacturers based on sales forecasts. These forecasts include estimates of future demand, historical trends, analysis of sales and marketing activities, and adjustment of overall market conditions. The Company regularly issues purchase orders to independent contract manufacturers which are cancelable upon agreement between the Company and third-party manufacturers. These manufacturing purchase commitments typically provide the Company with flexibility to cancel, reschedule or adjust requirements based upon business needs but the Company may incur certain costs depending on the production stage of the products. As of January 31, 2024 and 2023, total manufacturing purchase commitments were approximately $ 30.7 million and $ 43.6 million, respectively. The Company also reviews and assesses the need for any expected loss liabilities on quarterly basis for all products that it does not expect to sell for which it has committed purchases from suppliers. There were no material loss liabilities recorded in the consolidated balance sheets from adverse purchase commitments as of January 31, 2024. There was approximately $ 2.9 million loss liabilities recognized in the consolidated balance sheets from adverse purchase commitments as of January 31, 2023. Indemnification The Company, from time to time, in the normal course of business, indemnifies certain vendors with whom it enters into contractual relationships. The Company has agreed to hold the other party harmless against third-party claims in connection with the Company’s future products. The Company also indemnifies certain customers against third-party claims related to certain intellectual property and product liability matters. It is not possible to determine the maximum potential amount of liability under these indemnification obligations due to the limited history of prior indemnification claims and the unique facts and circumstances that are likely to be involved in each particular claim. The Company has no t made payments under these obligations as of January 31, 2024, and no liabilities have been recorded for these obligations in the consolidated balance sheets as of January 31, 2024 and 2023, respectively. Other Matters From time to time, the Company is subject to commercial disputes, employment issues, intellectual property claims and litigation, in the ordinary course of its business. Although the ultimate disposition of asserted claims cannot be predicted with certainty, it is the Company’s belief that the outcome of any such claims, either individually or on a combined basis, will not have a material adverse effect on its consolidated financial position. The results of any litigation cannot be predicted with certainty, and regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources, and other factors. As of January 31, 2024 and 2023, there were no accruals for contingent liabilities related to such matters recorded in the consolidated balance sheets.

Segment Reporting

Segment Reporting	12 Months Ended
Segment Reporting	Jan. 31, 2024
Segment Reporting [Abstract]
Segment Reporting	16. Segment Reporting The Company operates in one operating and reporting segment related to the development and sales of low-power, HD, Ultra HD video compression, image processing and computer vision solutions. The Chief Executive Officer of the Company has been identified as the Chief Operating Decision Maker (the CODM) and manages the Company’s operations as a whole. For the purpose of evaluating financial performance and allocating resources, the CODM reviews financial information presented on a consolidated basis accompanied by information by customer and geographic region. Geographic Revenue The following table sets forth the Company’s revenue by geographic region based on bill-to location for the periods indicated. Certain prior year amounts of revenue by geographic region have been adjusted to reflect the appropriate bill-to location for the related revenue. These adjustments did not impact the total revenues in any of the periods presented. Year Ended January 31, 2024 2023 2022 (in thousands) Taiwan $ 119,601 $ 191,692 $ 205,079 Asia Pacific 58,506 73,476 81,623 Europe 11,949 26,921 18,459 North America other than United States 25,754 32,901 21,572 United States 10,664 12,616 5,123 Total revenue $ 226,474 $ 337,606 $ 331,856 Substantially all of the Company’s property and equipment were located in the Asia Pacific region, United States and Europe. As of January 31, 2024, the net amount of these fixed assets located in these regions was approximately $ 5.3 million, $ 3.9 million and $ 1.2 million, respectively. As of January 31, 2023, the net amount of these fixed assets located in these regions was approximately $ 6.3 million, $ 4.0 million and $ 1.5 million, respectively. Major Customers The customers representing 10% or more of revenue for the fiscal years ended January 31, 2024, 2023 and 2022 were Wintech and Chicony. For the fiscal years ended January 31, 2024, 2023 and 2022, Wintech accounted for approximately 53 %, 57 % and 62 % of total revenue, respectively. For the fiscal years ended January 31, 2024, 2023 and 2022, Chicony accounted for approximately 14 %, 12 % and 13 % of total revenue, respectively. Accounts receivable with Wintech and Chicony were approximately $ 10.3 million and $ 7.0 million as of January 31, 2024, respectively. Accounts receivable with Wintech and Chicony were approximately $ 21.0 million and $ 9.4 million as of January 31, 2023, respectively.

Organization and Summary of S_2

Organization and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jan. 31, 2024
Accounting Policies [Abstract]
Organization	Organization Ambarella, Inc. (the Company) was incorporated in the Cayman Islands on January 15, 2004. The Company is a leading developer of low-power semiconductor solutions offering high-definition (HD) and Ultra HD compression, advanced image signal processing, and powerful artificial intelligence, or AI, processing. The Company combines its processor design capabilities with its expertise in video and image processing, algorithms and software to provide a technology platform that is designed to be easily scalable across multiple applications and enable rapid and efficient product development. The Company’s system-on-a-chip, or SoC, designs fully integrate high-definition video processing, image processing, artificial intelligence (AI) computer vision algorithms, audio processing and system functions onto a single chip. These low power SoCs deliver exceptional video and image quality and can extract valuable data from high-resolution video and radar streams. The Company is currently addressing a broad range of human and computer vision applications, including video security, advanced driver assistance systems (ADAS), electronic mirrors, drive recorders, driver/cabin monitoring systems, autonomous driving, and industrial and robotic applications. The Company sells its solutions to leading original equipment manufacturers, or OEMs, who include the Company’s SoCs in their products, and original design manufacturers, or ODMs, who include the Company’s SoCs in the products that they supply to OEMs, globally.
Basis of Consolidation	Basis of Consolidation The Company’s fiscal year ends on January 31. The consolidated financial statements of the Company and its subsidiaries have been prepared in conformity with U.S. GAAP. All intercompany transactions and balances have been eliminated upon consolidation.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reported periods. Actual results could differ from those estimates. On an ongoing basis, management evaluates its estimates and assumptions, including those related to (i) business combinations; (ii) write downs of excess and obsolete inventories; (iii) the estimated useful lives of long-lived assets; (iv) the valuation of stock-based compensation awards; (v) the realization of tax assets and estimates of tax liabilities, including reserves for uncertain tax positions and recognition or release of valuation allowance on deferred tax assets. These estimates and assumptions are based on historical experience and on various other factors which the Company believes to be reasonable under the circumstances. The Company may engage third-party valuation specialists to assist with estimates related to the valuation of assets and stock awards associated with various contractual arrangements. Such estimates often require the selection of appropriate valuation methodologies and significant judgment. Actual results could differ from these estimates under different assumptions or circumstances and such differences could be material.
Concentration of Risk	Concentration of Risk The Company’s products are manufactured, assembled and tested by third-party contractors located primarily in Asia. The Company does not have long-term agreements with these contractors. A significant disruption in the operations of one or more of these contractors would impact the production of the Company’s products which could have a material adverse effect on its business, financial condition and results of operations. A substantial portion of the Company’s revenue is derived from sales through one of its distributors, WT Microelectronics Co., Ltd., formerly Wintech Microelectronics Co., Ltd., or WT, which serves as its non-exclusive sales representative and fulfillment partner in Asia other than Japan, and to one ODM, Chicony Electronics Co., Ltd., or Chicony, which manufactures devices incorporating the Company’s solutions on behalf of multiple end-customers. Termination of the relationships with these customers could result in a temporary or permanent loss of revenue. Furthermore, any credit issues from these customers could impair their abilities to make timely payment to the Company. See Note 16 for additional information regarding revenue and credit concentration with these customers. Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents, marketable debt securities and accounts receivable. The Company maintains its cash primarily in checking accounts with reputable financial institutions. Cash deposits held with these financial institutions may exceed the amount of insurance provided on such deposits. The Company has not experienced any losses on deposits of its cash. In order to limit the exposure of each investment, the cash equivalents and marketable debt securities consist primarily of money market funds, commercial paper, corporate bonds, asset-backed securities and U.S. government securities which management assesses to be highly liquid. The Company does not hold or issue financial instruments for trading purposes. The Company performs ongoing credit evaluation of its customers and adjusts credit limits based upon payment history and customers’ credit worthiness. The Company regularly monitors collections and payments from its customers.
Foreign Currency Transactions	Foreign Currency Transactions The U.S. dollar is the functional currency for the Company and its subsidiaries. Monetary assets and liabilities denominated in non-U.S. currencies are re-measured to U.S. dollars using current exchange rates in effect at the balance sheet date. Nonmonetary assets and liabilities are re-measured to U.S. dollars using historical exchange rates. Monetary and other accounts are re-measured to U.S. dollars using average exchange rates in effect during each period. Gains or losses from foreign currency re-measurement are included in other income, net in the consolidated statements of operations, and, to date, have not been material.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value accounting is applied to all financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed in the financial statements on a recurring basis. The carrying amounts reflected in the consolidated balance sheets for cash equivalents, accounts receivable, accounts payable, accrued liabilities and other current liabilities, approximate fair value due to the short-term nature.
Cash Equivalents and Marketable Debt Securities	Cash Equivalents and Marketable Debt Securities The Company considers all highly liquid debt security investments with original maturities of less than three months at the time of purchase to be cash equivalents. Debt security investments that are highly liquid with original maturities at the time of purchase greater than three months are considered marketable debt securities. The Company classifies these investments as “available-for-sale” (AFS) securities. In accordance with Accounting Standards Update (ASU) No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, the Company estimates the expected losses whenever a security’s fair value is below its amortized cost basis. The expected loss is computed at an individual security level using the discounted cash flow method with the effective interest rate on the purchase date. In the determination of credit-related losses, the Company excludes securities with zero loss expectation such as assets backed by government agencies. There are various factors considered in its assessment of credit-related losses, including the extent to which the fair value is less than the amortized cost basis, adverse conditions related to an industry or an underlying loan obligator, the payment structure of the security, changes to the rating of the security and other factors that may affect the security credit. The credit-related portion of the loss is recognized in other income, net in the consolidated statements of operations but is limited to the difference between the fair value and the amortized cost basis of the security, adjusted for accrued interest. The non-credit-related portion of the loss is recognized in accumulated other comprehensive loss in the consolidated balance sheets. The Company measures the fair value of money market funds using quoted prices in active markets for identical assets and classifies them within Level 1. The fair value of the Company’s investments in other debt securities are obtained based on quoted prices for similar asserts in active markets, or model driven valuations using significant inputs derived from or corroborated by observable market data and are classified within Level 2. The Company does not have debt securities under unobservable inputs and classified within Level 3.
Restricted Cash	Restricted Cash Amounts included in restricted cash represent those required to be set aside to secure certain transactions in a foreign entity. As of January 31, 2024 and 2023, the restricted cash was immaterial, respectively. The following table presents cash, cash equivalents and restricted cash reported on the consolidated balance sheets, and the sums are presented on the consolidated statements of cash flows: As of January 31, 2024 2023 2022 (in thousands) Cash and cash equivalents $ 144,914 $ 113,541 $ 171,043 Restricted cash 7 8 10 Total as presented in the consolidated statements of cash flows $ 144,921 $ 113,549 $ 171,053
Trade Accounts Receivable and Allowance for Credit Losses	Trade Accounts Receivable and Allowance for Credit Losses The Company’s accounts receivables are recorded at invoiced amounts less allowance for any credit losses. In arrangements where revenue recognition occurs in advance of invoicing, an unbilled receivable is recorded, less allowance for any credit losses, within accounts receivable, when collection of these unbilled amounts are conditional only on the passage of time. According to ASU 2016-13, the Company recognizes credit losses based on a forward-looking current expected credit losses (CECL). The Company makes estimates of expected credit losses based upon its assessment of various factors, including historical collection experience, the age of accounts receivable balances, credit quality of its customers, current economic conditions, reasonable and supportable forecasts of future economic conditions, and other factors that may affect its ability to collect from customers. The changes in allowance for credit losses are recognized in the consolidated statement of operations. The uncollectible accounts receivables are written off in the period in which a determination is made that all commercially reasonable means of recovering them have been exhausted. There were no material credit losses and write-offs of accounts receivable for the fiscal years ended January 31, 2024, 2023 and 2022, respectively. There was no material allowance recorded as of January 31, 2024 and 2023, respectively.
Inventories	Inventories The Company records inventories at the lower of cost or net realizable value. The cost includes materials and other production costs and is computed using standard cost on a first-in, first-out basis. Inventory reserves are recorded for estimated obsolescence or unmarketable inventories based on forecast of future demand and market conditions. Any adjustments to reduce the cost of inventories to their net realizable value are recognized in earnings in the current period. Once inventory is written down, a new accounting cost basis is established and, accordingly, any associated reserve is not released until the inventory is sold or scrapped.
Property and Equipment	Property and Equipment Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful life for computer equipment, computer software, machinery, equipment and furniture and fixtures. Leasehold improvements are amortized over the shorter of the lease term or their estimated useful lives. Repairs and maintenance are charged to expense as incurred.
Intangible Assets	Intangible Assets The Company’s intangible assets primarily consist of acquired intangible assets, including developed technology, customer relationships and trade name, as well as software licenses. The acquired intangible assets are amortized over their estimated useful lives. The Company's in-process research and development, or IPR&D, is initially capitalized at fair value with an indefinite life and amortization commences upon completion of the underlying projects. When a project underlying reported IPR&D is completed, the corresponding amount of IPR&D is reclassified as an amortizable purchased intangible asset and is amortized over its estimated useful life. The Company accounts for a noncancelable on-premise internal-use software license as the acquisition of an intangible asset and the incurrence of a liability to the extent that all or a portion of the software licensing fees are not paid on or before the license acquisition date. The intangible asset and related liability are recorded at net present value and interest expense is recorded over the payment term. The software license is amortized over its license term. The Company expenses the cost of purchased software that is to be sold, leased or otherwise marketed as part of a product until the technological feasibility of the product has been established. Once the technological feasibility of the product, to be externally marketed, has been established or where the software has an alternative future use, the Company capitalizes the cost of purchased software until the associated product is available for general release to customers, at which point the capitalized cost is amortized on a product-by-product basis over the remaining estimated economic life of the product.
Leases	Leases In accordance with the Accounting Standards Codification (ASC) Topic 842, Leases, the Company recognizes leases as operating lease right-of-use (“ROU”) assets and corresponding lease liabilities at the lease commencement date based on the present value of future lease payments, while recognizing lease expenses under straight-line method through the lease term. The Company also elected the practical expedient that does not recognize ROU assets and lease liabilities that arise from short-term (12 months or less) leases. The Company does not combine lease components with non-lease components, and as a result, the non-lease components are accounted for separately. In determining the present value of lease payments, the Company uses the implicit interest rate if readily determinable. When the implicit rate is not readily determinable, the Company uses its incremental borrowing rate based on the information available at the lease commencement date. The Company's leases mainly include its worldwide office facilities which are all classified as operating leases. Certain leases include renewal options that are under the Company's discretion. The renewal options are included in the ROU asset and liability calculation if it is reasonably certain that the Company will exercise the option. The Company's finance leases were immaterial as of January 31, 2024 and 2023, respectively.
Business Combinations	Business Combinations In the application of purchase accounting in a business combination, the Company allocates the purchase price to the assets acquired and liabilities assumed based on their estimated fair values. The excess of the purchase price over the fair values of the identifiable assets and liabilities is recorded as goodwill. The Company identifies an acquired intangible asset apart from goodwill whenever the intangible asset arises from contractual or other legal rights, or when it can be separately sold, transferred, licensed, rented or exchanged. Intangible assets consist primarily of developed technology, customer relationships and trade name. When determining the fair values of assets acquired and liabilities assumed, especially with respect to the intangible assets, the Company is required to make significant estimates and assumptions. Critical estimates and assumptions used in valuation techniques include, but are not limited to, revenue growth, technology migration curve, customer attrition rate, royalty rates and risk-adjusted discount rates. The estimates are based on historical data, various internal estimates, and external sources that the Company believes to be reasonable upon the acquisition date. Actual results could differ from these estimates under different assumptions or circumstances and such differences could be material.
Goodwill	Goodwill The Company does not amortize goodwill. The Company tests goodwill for impairment at least annually in the fourth fiscal quarter, or sooner whenever events or changes in circumstances indicate that the asset may be impaired. There is only one single reporting unit for goodwill impairment test purposes based on the Company’s business and reporting structure. The Company is permitted to first assess qualitative factors to determine whether the two step goodwill impairment test is necessary. Further testing is only required if the Company determines, based on the qualitative assessment, that it is more likely than not that the reporting unit’s fair value is less than its carrying amount. Otherwise, no further impairment testing is required. Qualitative factors include industry and market considerations, overall financial performance, and other relevant events and factors affecting the reporting unit . No goodwill impairment has been identified to date based on the Company’s qualitative factors assessment.
Impairment of Long-Lived Assets Excluding Goodwill	Impairment of Long-Lived Assets Excluding Goodwill The Company reviews property and equipment and intangible assets, excluding goodwill, for impairment at least annually in the fourth fiscal quarter or whenever events or changes in circumstances indicate that the carrying amount of an asset, or asset group, may not be recoverable. Determination of recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset, or asset group to estimated undiscounted future cash flows expected to be generated by the asset, or asset group. If the carrying amount of an asset or asset group exceeds its estimated undiscounted future cash flows, an impairment charge is recognized for the amount by which the carrying amount of the asset or asset group exceeds the estimated fair value of the asset or asset group. Fair value is determined based on the estimated discounted future cash flows expected to be generated by the asset or asset group. Events or changes in circumstances that may indicate that an asset is impaired include significant decreases in the market value of an asset, significant underperformance relative to expected historical or projected future results of operations, a change in the extent or manner in which an asset is utilized, significant declines in the estimated fair value of the overall Company for a sustained period, shifts in technology, loss of key management or personnel, changes in the Company’s operating model or strategy and competitive forces. There has been no occurrence of events or indications to date that would trigger an impairment. As such, no impairment charge has been recognized as of January 31, 2024.
Equity Investments	Equity Investments The Company accounts for its investments in privately held companies as equity investments and reports the investments in other non-current assets in the consolidated balance sheets. The Company chooses to measure these equity investments that do not have readily determinable fair value at cost minus any recorded impairments, adjusted for subsequent observable price changes in transactions for an identical or similar investment of the same issuers. Upon determining that an impairment or observable price change exists, the Company records any adjustment to the fair value of the investment through other income, net in the consolidated statements of operations. There was approximately $ 1.2 million of impairment recognized in the fiscal year ended January 31, 2024, while approximately $ 0.7 million of realized gain was recognized in the fiscal year ended January 31, 2023. There were no significant changes in the fair value of the investments and the Company did no t recognize any impairment losses related to these investments in the fiscal year ended January 31, 2022.
Revenue Recognition	Revenue Recognition In accordance with ASC 606, Revenue from Contracts with Customers, the Company recognizes revenue when control of its goods and services is transferred to its customers. Revenue recognition is evaluated through the following five steps: (i) identification of the contract, or contracts, with a customer; (ii) identification of the performance obligations in the contract; (iii) determination of the transaction price; (iv) allocation of the transaction price to the performance obligations in the contract; and (v) recognition of revenue when or as a performance obligation is satisfied. The sale of semiconductor products accounts for the substantial majority of the Company’s consolidated revenue. Sales agreements with customers are renewable periodically and contain terms and conditions with respect to payment, delivery, warranty, supply and other rights. The Company considers an accepted customer purchase order, governed by sales agreement, to be the contract with the customer. For each contract, the Company considers the promise to transfer tangible products to be the identified performance obligation. Product sales contracts may include volume-based tiered pricing or rebates that are fulfilled in cash or product. In determining the transaction price, the Company accounts for the right of returns, cash rebates, commissions and other pricing adjustments as variable consideration, estimates these amounts based on the expected amount to be provided to customers and reduces the revenue recognized. The Company estimates sales returns and rebates based on the Company’s historical patterns of return and pricing credits. As the Company’s standard payment terms are 30 days to 60 days, the contracts have no financing component. For a limited number of contracts that include volume-based tiered pricing, the Company estimates the total consideration to be received by using the expected value method for each contract, computes weighted average selling price for each unit shipped in cases where there is a material right due to the presence of volume-based tiered pricing, allocates the total consideration between the identified performance obligations, and recognizes revenue when control of its goods and services is transferred to its customers. The Company considers product control to be transferred at a point in time upon shipment or delivery because the Company has a present right to payment at that time, the customer has legal title to the asset, the Company has transferred physical possession of the asset, and the customer has significant risk and rewards of ownership of the asset. The Company also enters into various project service agreements with certain customers. These agreements may include multiple performance obligations, such as software development services, licensing of intellectual property and post-contract customer support, or PCS. These multiple performance obligations are highly interdependent, highly interrelated, are typically not sold separately and do not have standalone selling prices. They are all inputs to generate one combined output which is incorporating its SoC into the customer’s product. Accordingly, the Company determines that they are not separately identifiable and shall be treated as a single performance obligation. For fixed-price project service contracts, the Company recognizes revenue either over time as services are provided using an input method based on contract costs incurred to date compared to total estimated contract cost, or at a point in time upon completion and acceptance by the customer, depending on the terms of the arrangement. For project service contracts that are billed at a fixed rate for each hour of service provided, the Company recognizes revenue in the amount for which the Company has the right to invoice as the Company believes the amount invoiced directly corresponds with the value to the customer of its performance completed to date. 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. The Company’s contract assets are primarily related to the satisfied but unbilled performance obligations associated with project service agreements at the reporting date. As of January 31, 2024 and 2023, the contract assets for these unbilled receivables were not material, respectively. The Company’s contract liabilities consist of deferred revenue. The deferred revenue is primarily related to the nonrecurring engineering charges that are either invoiced or paid but performance obligations are not satisfied, as well as the portion of a transaction price that exceeds the weighted average selling price for products sold to date under tiered-pricing contracts that contain material rights. The deferred revenue is expected to be recognized over the period when performance obligations are satisfied associated with project service agreements, or over the course of the contract when products are delivered for future pricing below the weighted average selling price of the contract. During fiscal year 2024, the Company recognized approximately $ 2.2 million of revenue that was included in the deferred revenue balance at January 31, 2023. As of January 31, 2024, the amount of remaining unsatisfied performance obligations on contracts, primarily consisting of product purchase orders with original contract duration of more than one year , was approximately $ 6.9 million, of which approximately 96 % is expected to be recognized within the next 12 months . The Company also elects not to disclose the value of unsatisfied or partially unsatisfied performance obligations for contracts with original expected contract duration of one year or less, and elects to exclude amounts collected from customers for all sales taxes from the transaction price.
Cost of Revenue	Cost of Revenue Cost of revenue includes the cost of materials, such as wafers processed by third-party foundries, costs associated with packaging, assembly, testing and manufacturing support operations, such as logistics, planning and quality assurance, as well as personnel costs (including stock-based compensation) related to project service agreements. Cost of revenue also includes indirect costs, such as inventory valuation reserves, adverse purchase commitments, allocation of facility costs, amortization of developed technology and software licenses, warranty and other general overhead costs.
Research and Development	Research and Development Research and development costs are expensed as incurred and consist primarily of personnel costs, product development costs, outside services, costs of development for software and hardware tools, costs and amortization of licensing intellectual property from third parties for product development, costs of fabrication of masks for prototype products, equipment expenses, depreciation of equipment and tools and allocation of facility costs.
Selling, General and Administrative	Selling, General and Administrative Selling, general and administrative expenses consist of personnel costs, travel and trade show costs, legal expenses, amortization of trade name and customer relationships, professional services and occupancy costs. Advertising expenses were not material for the fiscal years ended January 31, 2024, 2023 and 2022, respectively.
Stock-Based Compensation	Stock-Based Compensation The Company measures stock-based compensation for equity awards granted to employees and directors based on the estimated fair value on the grant date, and recognizes that compensation as expense using the straight-line attribution method for service condition awards or using the graded-vesting attribution method for awards with performance conditions over the requisite service period, which is typically the vesting period of each award. The Company determines the fair value of restricted stock and restricted stock units with service or performance conditions based on the fair market value of its ordinary shares on the grant date. The Company uses the Black-Scholes option pricing model to determine the fair value of stock options. Determining the fair value of stock options on the grant date requires the input of various assumptions, including stock price of the underlying ordinary share, the exercise price of the stock option, expected volatility, expected term, risk-free interest rate and dividend rate. The Company calculates expected volatility based on its own historical stock price for a period commensurate with the expected term, which is computed based on its own historical exercise behavior. The risk-free interest rate is derived from an average of the U.S. Treasury constant maturity rates for the respective periods most closely commensurate with the expected term. The expected dividend yield is zero because the Company has not historically paid dividends and has no present intention to pay dividends. The Company uses the Lattice pricing model and Monte Carlo Simulations to evaluate the fair value of awards with market conditions, including assumptions of historical volatility and risk-free interest rate commensurate with the vesting term. The Company elects to account for forfeitures as they occur.
Income Taxes	Income Taxes The Company records income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in its financial statements or tax returns. In estimating future tax consequences, generally all expected future events other than enactments or changes in the tax law or rates are considered. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized. The Company applies authoritative guidance for the accounting for uncertainty in income taxes. The guidance requires that tax effects of a position be recognized only if it is “more likely than not” to be sustained based solely on its technical merits as of the reporting date. Upon estimating its tax positions and tax benefits, the Company considers and evaluates numerous factors, which may require periodic adjustments and which may not reflect the final tax liabilities. The Company adjusts its financial statements to reflect only those tax positions that are more likely than not to be sustained under examination. As part of the process of preparing consolidated financial statements, the Company is required to estimate its taxes in each of the jurisdictions in which it operates. The Company estimates actual current tax exposure together with assessing temporary differences resulting from differing treatment of items, such as accruals and allowances not currently deductible for tax purposes. These differences result in deferred tax assets, which are included in the consolidated balance sheets. In general, deferred tax assets represent future tax benefits to be received when certain expenses previously recognized in the consolidated statements of operations become deductible expenses under applicable income tax laws, or loss or credit carryforwards are utilized. In assessing whether deferred tax assets may be realized, the Company considers whether it is more likely than not that some portion or all of deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income. The Company makes estimates and judgments about its future taxable income based on assumptions that are consistent with its plans and estimates. Should the actual amounts differ from estimates, the amount of valuation allowance could be materially impacted. Any adjustment to the deferred tax asset valuation allowance would be recorded in the consolidated statements of operations for the periods in which the adjustment is determined to be required.
Net Income (Loss) Per Ordinary Share	Net Income (Loss) Per Ordinary Share Basic earnings (losses) per share is computed by dividing net income (loss) available to ordinary shareholders by the weighted-average number of ordinary shares outstanding during the period. Diluted earnings (losses) per share is computed by dividing net income (loss) available to ordinary shareholders by the weighted-average number of ordinary shares outstanding during the period increased to include the number of additional ordinary shares that would have been outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include outstanding stock options, shares to be purchased under the Company’s employee stock purchase plan and unvested restricted stock units. The dilutive effect of potentially dilutive securities is reflected in diluted earnings (losses) per share by application of the treasury stock method.
Comprehensive Loss	Comprehensive Loss Comprehensive loss includes unrealized gains or losses from available-for-sale securities that are excluded from net loss.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In November 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures . This new guidance requires public entities to disclose significant segment expenses and other segment items on an annual and interim basis and to provide in interim periods all disclosures about a reportable segment’s profit or loss and assets that are currently required annually. Public entities with a single reportable segment are required to provide the new disclosures and all the disclosures required under ASC 280 Segment Reporting . The ASU shall be applied retrospectively to all periods presented in financial statements and is effective for fiscal years beginning after December 15, 2023 and for interim periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of adoption of this new guidance on its consolidated financial statements and disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures . This new guidance requires additional disclosures related to effective tax rate reconciliation, disaggregated income taxes paid and other modified income tax-related disclosures. The ASU shall be applied on a prospective basis with retrospective application permitted, and is effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of adoption of this new guidance on its consolidated financial statements and disclosures. In March 2024, the Securities and Exchange Commission (SEC) adopted final rules that will require the registrants to disclose climate-related risks that are reasonably likely to have a material impact on a registrant's business strategy, results of operations and financial condition. The new rules include disclosures relating to climate-related risks and risk managements, registrant's governance of such risks, financial impact on the audited financial statements, as well as greenhouse gas emissions. The new rules shall be applied prospectively, with information for prior periods required only to the extent it was previously disclosed in an SEC filing. The earliest adoption date starts from the registrant's fiscal year beginning calendar 2025. The Company is currently evaluating the impact of adoption of this new guidance on its consolidated financial statements and disclosures.

Organization and Summary of S_3

Organization and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Jan. 31, 2024
Accounting Policies [Abstract]
Schedule of Cash, Cash Equivalents and Restricted Cash	The following table presents cash, cash equivalents and restricted cash reported on the consolidated balance sheets, and the sums are presented on the consolidated statements of cash flows: As of January 31, 2024 2023 2022 (in thousands) Cash and cash equivalents $ 144,914 $ 113,541 $ 171,043 Restricted cash 7 8 10 Total as presented in the consolidated statements of cash flows $ 144,921 $ 113,549 $ 171,053

Business Combination (Tables)

Business Combination (Tables)	12 Months Ended
Business Combination (Tables)	Jan. 31, 2024
Business Combinations [Abstract]
Summary of Aggregate Purchase Consideration	The aggregate purchase consideration has been allocated as follows: Amount (in thousands) Cash consideration transferred $ 355,071 Net working capital adjustment 247 Fair value of stock-based compensation awards attributable to pre-combination services 407 Total purchase consideration $ 355,725
Summary of Intangible Assets Acquired in Acquisition	Below is a summary of intangible assets acquired in the acquisition: Acquisition Date Estimated Fair Value Useful Lives (in thousands) Trade name (1) $ 2,500 7 years Customer relationships (2) 13,200 9 years Developed technology (1) 17,100 7 years Total intangible assets acquired $ 32,800 _____________ (1) The fair values of trade name and developed technology were determined by applying the Relief-from-Royalty Method under the income approach. (2) Customer relationships represent the fair value of the existing relationships using the Multi-Period Excess Earnings Method.
Summary of Unaudited Information	The following table presents unaudited pro forma information as if the acquisition of Oculii had occurred in the beginning of the applicable comparable prior annual reporting period. The unaudited pro forma information for the period indicated includes adjustments for non-recurring transaction costs, amortization of intangibles arising from the acquisition, stock-based compensation expense and the related income tax effects. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the acquisition been effected at the beginning of the period presented. In addition, these results are not intended to be a projection of future results and do not reflect events that may occur after the acquisition, including but not limited to revenue enhancements, cost savings or operating synergies that the combined entity may achieve as a result of the acquisition. Pro Forma Year Ended January 31, 2022 (unaudited, in thousands) Revenue $ 333,323 Net loss $ ( 35,330 )

Financial Instruments and Fai_2

Financial Instruments and Fair Value (Tables)	12 Months Ended
Financial Instruments and Fair Value (Tables)	Jan. 31, 2024
Investments, All Other Investments [Abstract]
Schedule of Available-for-Sale Securities at Fair Value	All of the investments are classified as available-for-sale securities and reported at fair value in the consolidated balance sheets as follows: As of January 31, 2024 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in thousands) Money market funds $ 296 $ — $ — $ 296 Commercial paper 30,806 — — 30,806 Corporate bonds 38,867 180 ( 135 ) 38,912 Asset-backed securities 15,212 14 ( 96 ) 15,130 U.S. government securities 21,118 — ( 146 ) 20,972 Total cash equivalents and marketable debt securities $ 106,299 $ 194 $ ( 377 ) $ 106,116 As of January 31, 2023 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in thousands) Money market funds $ 7,872 $ — $ — $ 7,872 Commercial paper 18,333 — — 18,333 Corporate bonds 23,472 50 ( 224 ) 23,298 Asset-backed securities 18,753 44 ( 149 ) 18,648 U.S. government securities 33,256 22 ( 235 ) 33,043 Total cash equivalents and marketable debt securities $ 101,686 $ 116 $ ( 608 ) $ 101,194
Schedule of Available-for-Sale Securities Unrealized Loss Position at Fair Value	The following table provides the breakdown of unrealized losses as of January 31, 2024, aggregated by investment category and length of time that individual securities have been in a continuous loss position: As of January 31, 2024 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate bonds $ 9,050 $ ( 19 ) $ 8,363 $ ( 116 ) $ 17,413 $ ( 135 ) Asset-backed securities 4,821 ( 15 ) 6,289 ( 81 ) 11,110 ( 96 ) U.S. government securities 15,020 ( 65 ) 5,952 ( 81 ) 20,972 ( 146 ) Total marketable debt securities at loss position $ 28,891 $ ( 99 ) $ 20,604 $ ( 278 ) $ 49,495 $ ( 377 )
Schedule of Cash Equivalents and Marketable Debt Securities	As of January 31, 2024 January 31, 2023 (in thousands) Included in cash equivalents $ 31,103 $ 7,872 Included in marketable debt securities 75,013 93,322 Total cash equivalents and marketable debt securities $ 106,116 $ 101,194
Summary of Contractual Maturities of Investments	The contractual maturities of the investments at January 31, 2024 and 2023 were as follows: As of January 31, 2024 January 31, 2023 (in thousands) Due within one year $ 50,216 $ 48,016 Due in 1-5 years 55,900 52,414 Due in 5-7 years — 764 Total cash equivalents and marketable debt securities $ 106,116 $ 101,194
Schedule of Fair Value of Financial Instruments Measured on Recurring Basis	The following tables present the fair value of the financial instruments measured on a recurring basis as of January 31, 2024 and 2023, respectively: As of January 31, 2024 Total Level 1 Level 2 Level 3 (in thousands) Money market funds $ 296 $ 296 $ — $ — Commercial paper 30,806 — 30,806 — Corporate bonds 38,912 — 38,912 — Asset-backed securities 15,130 — 15,130 — U.S. government securities 20,972 — 20,972 — Total cash equivalents and marketable debt securities $ 106,116 $ 296 $ 105,820 $ — As of January 31, 2023 Total Level 1 Level 2 Level 3 (in thousands) Money market funds $ 7,872 $ 7,872 $ — $ — Commercial paper 18,333 — 18,333 — Corporate bonds 23,298 — 23,298 — Asset-backed securities 18,648 — 18,648 — U.S. government securities 33,043 — 33,043 — Total cash equivalents and marketable debt securities $ 101,194 $ 7,872 $ 93,322 $ — In addition to the available-for-sale securities, the Company also has fixed deposit accounts that are classified as cash equivalents. As of January 31, 2024, the total fair value of $ 7.0 million with fixed deposit accounts was considered to be equal to their book value.

Inventories (Tables)

Inventories (Tables)	12 Months Ended
Inventories (Tables)	Jan. 31, 2024
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories at January 31, 2024 and 2023 consisted of the following: As of January 31, 2024 2023 (in thousands) Work-in-progress $ 18,933 $ 26,023 Finished goods 10,110 14,463 Total $ 29,043 $ 40,486

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
Property and Equipment, Net (Tables)	Jan. 31, 2024
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment at January 31, 2024 and 2023 consisted of the following: As of January 31, 2024 2023 (in thousands) Computer hardware and software $ 23,518 $ 20,733 Tools and equipment 8,564 8,325 Furniture and fixtures 1,351 1,311 Leasehold improvements 3,440 3,295 Construction in progress 166 513 37,039 34,177 Less: accumulated depreciation and amortization ( 26,600 ) ( 22,363 ) Total property and equipment, net $ 10,439 $ 11,814

Intangible Assets, Net (Tables)

Intangible Assets, Net (Tables)	12 Months Ended
Intangible Assets, Net (Tables)	Jan. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Components of Intangible Assets	The components of intangible assets as of January 31, 2024 and 2023 were as follows: As of January 31, 2024 As of January 31, 2023 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in thousands) Software licenses $ 41,329 $ ( 12,029 ) $ 29,300 $ 34,128 $ ( 6,319 ) $ 27,809 Developed technology 21,200 ( 6,961 ) 14,239 21,200 ( 3,932 ) 17,268 Customer relationships 13,200 ( 3,300 ) 9,900 13,200 ( 1,833 ) 11,367 Trade name 2,500 ( 803 ) 1,697 2,500 ( 447 ) 2,053 Total intangible assets, net $ 78,229 $ ( 23,093 ) $ 55,136 $ 71,028 $ ( 12,531 ) $ 58,497
Summary of Expected Future Amortization Expense Related to Intangible Assets	The expected future amortization expense related to these intangible assets as of January 31, 2024 is as follows: As of January 31, 2024 Fiscal Year (in thousands) 2025 $ 14,878 2026 12,548 2027 7,669 2028 6,127 2029 5,834 Thereafter 8,080 Total future amortization expenses: $ 55,136

Accrued and Other Current Lia_2

Accrued and Other Current Liabilities (Tables)	12 Months Ended
Accrued and Other Current Liabilities (Tables)	Jan. 31, 2024
Payables and Accruals [Abstract]
Schedule of Accrued and Other Current Liabilities	Accrued and other current liabilities at January 31, 2024 and 2023 consisted of the following: As of January 31, 2024 2023 (in thousands) Accrued employee compensation $ 16,610 $ 22,152 Accrued product development costs 18,290 19,433 Software license liabilities, current 8,161 7,059 Other accrued liabilities 5,537 8,011 Total accrued and other current liabilities $ 48,598 $ 56,655

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Jan. 31, 2024
Leases [Abstract]
Schedule of Supplemental Cash Flow Information Related to Operating Leases	Supplemental cash flow information related to the operating leases is as follows: Year Ended January 31, 2024 January 31, 2023 (in thousands) Cash paid for operating leases included in operating cash flows $ 3,877 $ 4,011 Supplemental non-cash information related to lease liabilities arising from obtaining right-of-use assets $ 216 $ 319 Leased assets changes arising from lease modifications $ 348 $ 575
Schedule of Future Minimum Lease Payments for Lease Liabilities	As of January 31, 2024, the weighted average remaining lease term is 1.77 years, and the weighted average discount rate is 3.63 %. Future minimum lease payments for the lease liabilities are as follows: As of January 31, 2024 Fiscal Year (in thousands) 2025 $ 3,567 2026 1,536 2027 291 2028 74 2029 — Thereafter — Total future annual minimum lease payments 5,468 Less: interest ( 129 ) Total lease liabilities $ 5,339

Other Long-Term Liabilities (Ta

Other Long-Term Liabilities (Tables)	12 Months Ended
Other Long-Term Liabilities (Tables)	Jan. 31, 2024
Other Liabilities Disclosure [Abstract]
Schedule of Other Long-Term Liabilities	Other long-term liabilities at January 31, 2024 and 2023 consisted of the following: As of January 31, 2024 2023 (in thousands) Unrecognized tax benefits, including interest $ 3,762 $ 3,770 Deferred tax liabilities 855 1,120 Software license liabilities, non-current 8,288 9,614 Other long-term liabilities 4 1,044 Total other long-term liabilities $ 12,909 $ 15,548

Capital Stock (Tables)

Capital Stock (Tables)	12 Months Ended
Capital Stock (Tables)	Jan. 31, 2024
Equity [Abstract]
Schedule of Ordinary Shares Reserved for Future Issuance under Company's Equity Plans and Employee Stock Purchase Plan	As of January 31, 2024 and 2023, the following ordinary shares were reserved for future issuance under the Company’s equity plans and employee stock purchase plan: As of January 31, 2024 2023 Shares reserved for options, restricted stock and restricted stock units under equity plans 4,492,705 5,822,819 Shares reserved for employee stock purchase plan 2,834,384 2,986,403

Employee Benefits and Stock-b_2

Employee Benefits and Stock-based Compensation (Tables)	12 Months Ended
Employee Benefits and Stock-based Compensation (Tables)	Jan. 31, 2024
Postemployment Benefits [Abstract]
Classification of Stock-based Compensation	The following table presents the classification of stock-based compensation for the periods indicated: Year Ended January 31, 2024 2023 2022 (in thousands) Stock-based compensation: Cost of revenue $ 3,341 $ 3,597 $ 1,489 Research and development 72,759 71,236 54,787 Selling, general and administrative 35,216 36,325 31,525 Total stock-based compensation $ 111,316 $ 111,158 $ 87,801
Weighted-Average Assumptions Used to Estimate Fair Value	The following table sets forth the weighted-average assumptions used to estimate the fair value of stock options and employee stock purchase plan awards for the periods indicated: Year Ended January 31, 2024 2023 2022 Stock Options: Volatility — — 51 % Risk-free interest rate — — 1.04 % Expected term (years) — — 5.06 Dividend yield — — 0 % Employee stock purchase plan awards: Volatility 56 % 81 % 57 % Risk-free interest rate 5.11 % 2.32 % 0.06 % Expected term (years) 0.5 0.5 0.5 Dividend yield 0 % 0 % 0 %
Stock Option Activities	The following table summarizes stock option activities for the periods indicated: Option Outstanding Weighted- Total Intrinsic Average Weighted- Weighted- Value of Remaining Aggregate Weighted- Average Average options Contractual Intrinsic Average Grant-date Acquisition-date Exercised Term Value Shares Exercise Price Fair Value Fair Value (in thousands) (in years) (in thousands) Outstanding at January 31, 2021 719,143 $ 38.33 Granted 14,700 110.19 $ 50.28 Assumed 163,581 23.10 $ 173.04 Exercised ( 269,287 ) 28.23 $ 25,622 Forfeited ( 7,669 ) 68.95 Expired ( 1,146 ) 9.86 Outstanding at January 31, 2022 619,322 40.08 Exercised ( 121,624 ) 30.34 $ 6,712 Forfeited ( 10,618 ) 55.97 Expired ( 2,289 ) 39.19 Outstanding at January 31, 2023 484,791 42.18 Exercised ( 104,931 ) 26.06 $ 4,479 Forfeited ( 926 ) 42.59 Expired ( 5,616 ) 63.39 Outstanding at January 31, 2024 373,318 46.39 3.43 $ 16,454 Exercisable at January 31, 2024 326,464 $ 47.75 2.95 $ 13,920
Restricted Stock Unit Activities	The following table summarizes restricted stock unit activities for the periods indicated: Weighted- Average Grant-Date Shares Fair Value Unvested at January 31, 2021 2,871,801 $ 51.73 Granted 1,213,257 128.80 Vested ( 1,367,309 ) 53.85 Forfeited ( 66,614 ) 71.59 Unvested at January 31, 2022 2,651,135 85.41 Granted 1,549,174 74.45 Vested ( 1,513,972 ) 71.32 Forfeited ( 112,978 ) 99.46 Unvested at January 31, 2023 2,573,359 86.81 Granted 1,305,401 70.32 Vested ( 1,220,608 ) 78.62 Forfeited ( 225,512 ) 81.79 Unvested at January 31, 2024 2,432,640 $ 82.54

Net Loss Per Ordinary Share (Ta

Net Loss Per Ordinary Share (Tables)	12 Months Ended
Net Loss Per Ordinary Share (Tables)	Jan. 31, 2024
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Loss Per Ordinary Share	The following table sets forth the computation of basic and diluted net loss per ordinary share for the periods indicated: Year Ended January 31, 2024 2023 2022 (in thousands, except share and per share data) Numerator: Net loss $ ( 169,417 ) $ ( 65,386 ) $ ( 26,411 ) Denominator: Weighted-average ordinary shares - basic 39,878,872 38,363,638 36,577,120 Weighted-average ordinary shares - diluted 39,878,872 38,363,638 36,577,120 Net loss per ordinary share: Basic $ ( 4.25 ) $ ( 1.70 ) $ ( 0.72 ) Diluted $ ( 4.25 ) $ ( 1.70 ) $ ( 0.72 )
Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Ordinary Share	The following weighted-average potentially dilutive securities were excluded from the computation of diluted net loss per ordinary share as their effect would have been antidilutive: Year Ended January 31, 2024 2023 2022 Options to purchase ordinary shares 234,088 336,828 327,747 Restricted stock units 1,549,026 1,550,679 1,388,091 Employee stock purchase plan 10,483 10,883 8,904 1,793,597 1,898,390 1,724,742

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Jan. 31, 2024
Income Tax Disclosure [Abstract]
Summary of Loss before Income Taxes	Loss before income taxes consisted of the following for the periods indicated: Year Ended January 31, 2024 2023 2022 (in thousands) U.S. operations $ ( 33,953 ) $ ( 18,968 ) $ ( 5,842 ) Non-U.S. operations ( 114,577 ) ( 51,970 ) ( 22,799 ) Loss before income taxes $ ( 148,530 ) $ ( 70,938 ) $ ( 28,641 )
Schedule of Income Tax Provision (Benefit)	Income tax provision (benefit) consisted of the following for the periods indicated: Year Ended January 31, 2024 2023 2022 (in thousands) Current: U.S. federal tax $ 303 $ ( 3,525 ) $ 907 U.S. state taxes 1 175 — Non-U.S. foreign taxes 1,711 2,395 1,778 2,015 ( 955 ) 2,685 Deferred: U.S. federal tax 18,909 ( 4,231 ) ( 4,819 ) U.S. state taxes — — ( 14 ) Non-U.S. foreign taxes ( 37 ) ( 366 ) ( 82 ) 18,872 ( 4,597 ) ( 4,915 ) Provision (benefit) for income taxes $ 20,887 $ ( 5,552 ) $ ( 2,230 )
Schedule of Reconciliation Between the Provision (Benefit) for Income Taxes at the Statutory Rate and the Effective Tax Rate	For purposes of the reconciliation between the provision (benefit) for income taxes at the statutory rate and the effective tax rate, a notional U.S. 21 % rate is applied to pretax income (loss) as a result of the following for the periods indicated, respectively: Year Ended January 31, 2024 2023 2022 (in thousands) Provision at U.S. notional statutory rate $ ( 31,191 ) $ ( 14,897 ) $ ( 6,015 ) U.S. state taxes 6 114 ( 11 ) Non-U.S. foreign tax differential 25,736 12,943 6,483 Stock-based compensation 4,847 10,004 1,900 U.S. R&D credit ( 7,232 ) ( 5,045 ) ( 5,886 ) Valuation allowance 28,311 2,124 765 FIN48 interest 45 ( 739 ) 311 Uncertain tax position release — ( 10,188 ) — Other 365 132 223 Provision (benefit) for income taxes $ 20,887 $ ( 5,552 ) $ ( 2,230 )
Schedule of Deferred Tax Assets and Liabilities	Temporary differences that gave rise to significant portions of the Company’s deferred tax assets and liabilities at January 31, 2024 and 2023 were as follows: As of January 31, 2024 2023 (in thousands) Deferred tax assets: Federal and state credits $ 51,344 $ 40,134 Net operating losses 6,099 6,659 Expenses not currently deductible 3,988 3,164 Operating lease liabilities 1,009 1,582 Stock-based compensation 3,820 3,678 Other deferred tax assets 220 262 Gross deferred tax assets 66,480 55,479 Valuation allowance ( 60,036 ) ( 28,596 ) Total deferred tax assets $ 6,444 $ 26,883 Deferred tax liabilities Intangible assets ( 5,722 ) ( 6,782 ) Property and equipment ( 460 ) ( 617 ) Operating lease assets ( 918 ) ( 1,452 ) Net deferred tax assets (liabilities) $ ( 656 ) $ 18,032
Summary of Tax Valuation Allowance	Tax valuation allowance for the periods indicated below were as follows: Deductions Additions Charged to Balance at Additions Charged to Expenses Balance at Beginning of Charged to Other or Other End of Period Expenses Account Accounts Period (in thousands) Tax Valuation Allowance Year ended January 31, 2024 $ 28,596 31,440 — — $ 60,036 Year ended January 31, 2023 $ 24,083 4,513 — — $ 28,596 Year ended January 31, 2022 $ 17,962 4,874 1,247 — $ 24,083
Schedule of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits	The following table sets forth a reconciliation of the beginning and ending amount of unrecognized tax benefits: Year Ended January 31, 2024 2023 2022 (in thousands) Beginning balance: $ 21,656 $ 30,884 $ 29,527 Additions based on tax positions related to the 997 1,033 1,412 Additions for tax positions of prior years 168 195 55 Reductions for tax positions in prior years ( 38 ) ( 45 ) — Settlements for prior periods — — — Lapse of applicable statute of limitations ( 155 ) ( 10,411 ) ( 110 ) Ending balance: $ 22,628 $ 21,656 $ 30,884

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
Segment Reporting (Tables)	Jan. 31, 2024
Segment Reporting [Abstract]
Company's Revenue by Geographic Region Based on Bill-to Location	The following table sets forth the Company’s revenue by geographic region based on bill-to location for the periods indicated. Certain prior year amounts of revenue by geographic region have been adjusted to reflect the appropriate bill-to location for the related revenue. These adjustments did not impact the total revenues in any of the periods presented. Year Ended January 31, 2024 2023 2022 (in thousands) Taiwan $ 119,601 $ 191,692 $ 205,079 Asia Pacific 58,506 73,476 81,623 Europe 11,949 26,921 18,459 North America other than United States 25,754 32,901 21,572 United States 10,664 12,616 5,123 Total revenue $ 226,474 $ 337,606 $ 331,856

Organization and Summary of S_4

Organization and Summary of Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	$ 144,914	$ 113,541	$ 171,043
Restricted cash	7	8	10
Total as presented in the consolidated statements of cash flows	$ 144,921	$ 113,549	$ 171,053	$ 241,284

Organization and Summary of S_5

Organization and Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Jan. 31, 2024 USD ($) Reportingunit	Jan. 31, 2023 USD ($)	Jan. 31, 2022 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reporting unit for goodwill impairment \| Reportingunit	1
Goodwill impairment	$ 0
Impairment of long-lived assets	0
Impairment losses on investment	1,200,000		$ 0
Realized gain on investments recognized		$ 700,000
Deferred revenue recognized	$ 2,200,000
Remaining duration of performance obligation	1 year
Amount of remaining performance obligation	$ 6,900,000
Percentage of remaining performance obligation	96%
Description of expected timing to be recognized	expected to be recognized within the next 12 months
Expected dividend yield	0%	0%	0%
Allowance for credit losses	$ 0	$ 0
Write-offs of accounts receivable	$ 0	$ 0	$ 0

Business Combination - Addition

Business Combination - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Nov. 05, 2021	Jan. 31, 2022	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Business Acquisition [Line Items]
Goodwill			$ 303,625	$ 303,625
Revenue			226,474	337,606	$ 331,856
Net loss			$ (169,417)	$ (65,386)	$ (26,411)
Oculii Corp [Member]
Business Acquisition [Line Items]
Date of acquisition					Nov. 05, 2021
Percentage of voting rights	100%
Total purchase consideration	$ 355,725
Goodwill	277,000
Intangible assets	32,800
Net assets acquired	$ 45,900
Estimated useful lives	7 years 9 months 18 days
Oculii Corp [Member] \| Post Combination [Member]
Business Acquisition [Line Items]
Revenue		$ 500
Net loss		$ (6,100)
Selling General and Administrative Expenses [Member] \| Oculii Corp [Member]
Business Acquisition [Line Items]
Acquisition related costs					$ 3,800

Business Combination - Summary

Business Combination - Summary of Aggregate Purchase Consideration (Details) - Oculii Corp [Member] $ in Thousands	Nov. 05, 2021 USD ($)
Business Acquisition [Line Items]
Cash consideration transferred	$ 355,071
Net working capital adjustment	247
Fair value of stock-based compensation awards attributable to pre-combination services	407
Total purchase consideration	$ 355,725

Business Combination - Summar_2

Business Combination - Summary of Intangible Assets Acquired in Acquisition (Details) - Oculii Corp [Member] $ in Thousands	Nov. 05, 2021 USD ($)
Business Acquisition [Line Items]
Total intangible assets acquired	$ 32,800
Trade Name [Member]
Business Acquisition [Line Items]
Total intangible assets acquired	$ 2,500
Estimated useful lives	7 years
Customer Relationships [Member]
Business Acquisition [Line Items]
Total intangible assets acquired	$ 13,200
Estimated useful lives	9 years
Developed Technology [Member]
Business Acquisition [Line Items]
Total intangible assets acquired	$ 17,100
Estimated useful lives	7 years

Business Combination - Summar_3

Business Combination - Summary of Unaudited Information (Details) - Oculii Corp [Member] $ in Thousands	12 Months Ended
	Jan. 31, 2022 USD ($)
Business Acquisition [Line Items]
Revenue	$ 333,323
Net loss	$ (35,330)

Financial Instruments and Fai_3

Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities at Fair Value (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 106,299	$ 101,686
Unrealized Gains	194	116
Unrealized Losses	(377)	(608)
Fair Value	106,116	101,194
Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	296	7,872
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	296	7,872
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	30,806	18,333
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	30,806	18,333
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	38,867	23,472
Unrealized Gains	180	50
Unrealized Losses	(135)	(224)
Fair Value	38,912	23,298
Asset-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	15,212	18,753
Unrealized Gains	14	44
Unrealized Losses	(96)	(149)
Fair Value	15,130	18,648
U.S. government securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	21,118	33,256
Unrealized Gains	0	22
Unrealized Losses	(146)	(235)
Fair Value	$ 20,972	$ 33,043

Financial Instruments and Fai_4

Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities Unrealized Loss Position at Fair Value (Detail) $ in Thousands	Jan. 31, 2024 USD ($)
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	$ 28,891
12 Months or Greater, Fair Value	20,604
Total, Fair Value	49,495
Less than 12 Months, Unrealized Losses	(99)
12 Months or Greater, Unrealized Losses	(278)
Total, Unrealized Losses	(377)
Corporate bonds [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	9,050
12 Months or Greater, Fair Value	8,363
Total, Fair Value	17,413
Less than 12 Months, Unrealized Losses	(19)
12 Months or Greater, Unrealized Losses	(116)
Total, Unrealized Losses	(135)
Asset-backed securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	4,821
12 Months or Greater, Fair Value	6,289
Total, Fair Value	11,110
Less than 12 Months, Unrealized Losses	(15)
12 Months or Greater, Unrealized Losses	(81)
Total, Unrealized Losses	(96)
U.S. government securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	15,020
12 Months or Greater, Fair Value	5,952
Total, Fair Value	20,972
Less than 12 Months, Unrealized Losses	(65)
12 Months or Greater, Unrealized Losses	(81)
Total, Unrealized Losses	$ (146)

Financial Instruments and Fai_5

Financial Instruments and Fair Value - Additional Information (Detail) - USD ($)	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Debt Securities, Available-for-Sale [Line Items]
Money market funds or debt securities with unrealized losses for more than twelve months	$ 20,604,000
Interest income and realized gains and losses from available-for-sale debt securities	4,700,000	$ 1,700,000	$ 1,700,000
Debt Securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Money market funds or debt securities with unrealized losses for more than twelve months		0
Money Market Funds [Member]
Debt Securities, Available-for-Sale [Line Items]
Money market funds or debt securities with unrealized losses for more than twelve months		$ 0
Fixed Deposit Accounts [Member]
Debt Securities, Available-for-Sale [Line Items]
Fixed deposit accounts classified as cash equivalents	$ 7,000,000

Financial Instruments and Fai_6

Financial Instruments and Fair Value - Schedule of Cash Equivalents and Marketable Debt Securities (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Schedule of Available-for-sale Securities [Line Items]
Total cash equivalents and marketable debt securities	$ 106,116	$ 101,194
Included in cash equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Total cash equivalents and marketable debt securities	31,103	7,872
Included in marketable debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total cash equivalents and marketable debt securities	$ 75,013	$ 93,322

Financial Instruments and Fai_7

Financial Instruments and Fair Value - Summary of Contractual Maturities of Investments (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]
Due within one year	$ 50,216	$ 48,016
Due in 1-5 years	55,900	52,414
Due in 5-7 years	0	764
Total cash equivalents and marketable debt securities	$ 106,116	$ 101,194

Financial Instruments and Fai_8

Financial Instruments and Fair Value - Schedule of Fair Value of Financial Instruments Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	$ 106,116	$ 101,194
Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	296	7,872
Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	30,806	18,333
Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	38,912	23,298
Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	15,130	18,648
U.S. government securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	20,972	33,043
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	296	7,872
Level 1 [Member] \| Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	296	7,872
Level 1 [Member] \| Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 1 [Member] \| Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 1 [Member] \| Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 1 [Member] \| U.S. government securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	105,820	93,322
Level 2 [Member] \| Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 2 [Member] \| Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	30,806	18,333
Level 2 [Member] \| Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	38,912	23,298
Level 2 [Member] \| Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	15,130	18,648
Level 2 [Member] \| U.S. government securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	20,972	33,043
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] \| Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] \| Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] \| Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] \| Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] \| U.S. government securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	$ 0	$ 0

Inventories - Schedule of Inven

Inventories - Schedule of Inventory (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Inventory Disclosure [Abstract]
Work-in-progress	$ 18,933	$ 26,023
Finished goods	10,110	14,463
Total	$ 29,043	$ 40,486

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Property, Plant and Equipment [Abstract]
Depreciation of property and equipment	$ 4.8	$ 3.9	$ 2.8

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 37,039	$ 34,177
Less: accumulated depreciation and amortization	(26,600)	(22,363)
Total property and equipment, net	10,439	11,814
Computer hardware and software [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	23,518	20,733
Tools and equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	8,564	8,325
Furniture and fixtures [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,351	1,311
Leasehold improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	3,440	3,295
Construction in progress [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 166	$ 513

Intangible Assets, Net - Additi

Intangible Assets, Net - Additional Information (Detail) - USD ($)	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Finite Lived Intangible Assets [Line Items]
Liabilities associated with software license at net present value, current	$ 8,161,000	$ 7,059,000
Liabilities associated with software license at net present value, non-current	8,288,000	9,614,000
Software licenses purchased	13,000,000
Unamortized software licenses with alternative uses to be sold, leased or marketed	9,400,000
Impairment of intangible assets	$ 0	0	$ 0
IPR&D [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets acquired			4,100,000
Estimated economic life	7 years
Software licenses [Member]
Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 11,500,000	7,500,000	6,400,000
Internal-use software licenses [Member]
Finite Lived Intangible Assets [Line Items]
Fully amortized software license retired	5,800,000
Acquired Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 4,900,000	$ 4,900,000	$ 1,400,000

Intangible Assets, Net - Summar

Intangible Assets, Net - Summary of Components of Intangible Assets (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 78,229	$ 71,028
Accumulated Amortization	(23,093)	(12,531)
Net Carrying Amount	55,136	58,497
Software licenses [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	41,329	34,128
Accumulated Amortization	(12,029)	(6,319)
Net Carrying Amount	29,300	27,809
Developed technology [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,200	21,200
Accumulated Amortization	(6,961)	(3,932)
Net Carrying Amount	14,239	17,268
Customer relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	13,200	13,200
Accumulated Amortization	(3,300)	(1,833)
Net Carrying Amount	9,900	11,367
Trade Name [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,500	2,500
Accumulated Amortization	(803)	(447)
Net Carrying Amount	$ 1,697	$ 2,053

Intangible Assets, Net - Summ_2

Intangible Assets, Net - Summary of Expected Future Amortization Expense Related to Intangible Assets (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
2025	$ 14,878
2026	12,548
2027	7,669
2028	6,127
2029	5,834
Thereafter	8,080
Net Carrying Amount	$ 55,136	$ 58,497

Goodwill - Additional Informati

Goodwill - Additional Information (Detail)	12 Months Ended
Goodwill - Additional Information (Detail)	Jan. 31, 2024 USD ($) Segment	Jan. 31, 2023 USD ($)	Jan. 31, 2022 USD ($)
Finite Lived Intangible Assets [Line Items]
Number of reportable segment \| Segment	1
Goodwill	$ 303,625,000	$ 303,625,000
Goodwill impairment	$ 0	$ 0	$ 0

Accrued and Other Current Lia_3

Accrued and Other Current Liabilities - Schedule of Accrued and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Payables and Accruals [Abstract]
Accrued employee compensation	$ 16,610	$ 22,152
Accrued product development costs	18,290	19,433
Software license liabilities, current	8,161	7,059
Other accrued liabilities	5,537	8,011
Total accrued and other current liabilities	$ 48,598	$ 56,655

Accrued and Other Current Lia_4

Accrued and Other Current Liabilities - Additional Information (Detail) $ in Millions	12 Months Ended
	Jan. 31, 2024 USD ($)
Schedule of Accrued Liabilities [Line Items]
Annual bonus paid	$ 5.6
Cash [Member]
Schedule of Accrued Liabilities [Line Items]
Annual bonus paid	1.1
Restricted stock units [Member]
Schedule of Accrued Liabilities [Line Items]
Annual bonus paid	$ 4.5

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Lessee Lease Description [Line Items]
Increase to operating lease liabilities		$ 0.8	$ 4.4
Increase to operating lease ROU assets		0.8	4.4
Operating lease expense	$ 3.7	$ 3.7	$ 3.5
Weighted-average remaining lease term - operating leases	1 year 9 months 7 days
Weighted-average discount rate - operating leases	3.63%
Shanghai [Member] \| Extended Office Lease [Member]
Lessee Lease Description [Line Items]
Lease inception date			Dec. 01, 2021
Expiration date			Nov. 30, 2024
Lease term			3 years
Shanghai [Member] \| Additional Office Space [Member]
Lessee Lease Description [Line Items]
Lease inception date			Aug. 01, 2021
Expiration date			Nov. 30, 2024
Lease term			40 months
Shenzhen and Santa Clara [Member] \| Extended Office Lease [Member]
Lessee Lease Description [Line Items]
Lease inception date		Oct. 01, 2022
Expiration date		Sep. 30, 2024
Shenzhen [Member] \| Extended Office Lease [Member]
Lessee Lease Description [Line Items]
Lease term		2 years
Santa Clara [Member] \| Extended Office Lease [Member]
Lessee Lease Description [Line Items]
Lease term		2 years
Hong Kong [Member] \| Extended Office Lease [Member]
Lessee Lease Description [Line Items]
Lease inception date			Dec. 01, 2021
Expiration date			Nov. 30, 2026
Lease term			5 years

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Leases [Abstract]
Cash paid for operating leases included in operating cash flows	$ 3,877	$ 4,011
Supplemental non-cash information related to lease liabilities arising from obtaining right-of-use assets	216	319
Leased assets changes arising from lease modifications	$ 348	$ 575

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments for Lease Liabilities (Detail) $ in Thousands	Jan. 31, 2024 USD ($)
Leases [Abstract]
2025	$ 3,567
2026	1,536
2027	291
2028	74
2029	0
Thereafter	0
Total future annual minimum lease payments	5,468
Less: interest	(129)
Total lease liabilities	$ 5,339

Other Long-Term Liabilities - S

Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Other Liabilities Disclosure [Abstract]
Unrecognized tax benefits, including interest	$ 3,762	$ 3,770
Deferred tax liabilities	855	1,120
Software license liabilities, non-current	8,288	9,614
Other long-term liabilities	4	1,044
Total other long-term liabilities	$ 12,909	$ 15,548

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Class Of Stock [Line Items]
Preference shares, shares authorized	20,000,000	20,000,000
Preference shares, par value	$ 0.00045	$ 0.00045
Preference shares, shares issued	0	0
Preference shares, shares outstanding	0	0
Stock repurchase program, expiration date	Jun. 30, 2024
Stock repurchased, shares	0	0	0
Stock Repurchase Program $50.0 Million Authorization [Member]
Class Of Stock [Line Items]
Amount available under stock repurchase program	$ 49

Capital Stock - Schedule of Ord

Capital Stock - Schedule of Ordinary Shares Reserved for Future Issuance under Company's Equity Plans and Employee Stock Purchase Plan (Detail) - shares	Jan. 31, 2024	Jan. 31, 2023
Equity Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved	4,492,705	5,822,819
ESPP [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved	2,834,384	2,986,403

Employee Benefits and Stock-b_3

Employee Benefits and Stock-based Compensation - Additional Information (Detail) - USD ($)		2 Months Ended	3 Months Ended			12 Months Ended
	Nov. 05, 2021	Jun. 30, 2021	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Contribution expense						$ 800,000	$ 800,000	$ 600,000
Voting power of all classes of company's shares						10%
Additional stock-based compensation expense, net related to departure recognized						$ 693,000
Stock-based compensation expense, net						111,316,000	111,158,000	$ 87,801,000
Accrued stock-based compensation expense liabilities						$ 3,600,000	$ 4,600,000
Closing price of stock						$ 52.56
Executive [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Acceleration of vesting of shares of unvested equity awards							35,703
Additional stock-based compensation expense, net related to departure recognized							$ 1,700,000
Stock-based compensation expense, net						$ 1,600,000
Stock options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option's term of up to 10 years from grant date						10 years	10 years	10 years
Vesting schedule						vest 25% on the first anniversary service date of the grant and the remainder vest ratably over the following 36 months.
Total unrecognized compensation cost, stock options						$ 6,700,000
Weighted average recognition period						1 year 3 months
Restricted Stock and Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting schedule						1/4th of the shares on the first anniversary service date of the grant and 1/16th of the shares vest every 3 months thereafter, so as to be 100% vested on the fourth anniversary of the vesting commencement date.
Restricted stock units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average recognition period						2 years 5 months 4 days
Total unrecognized compensation cost, restricted stock units						$ 165,500,000
Aggregate intrinsic value of unvested restricted stock units						127,900,000
Total fair value of vesting dates of restricted stock units vested						$ 88,000,000	$ 122,000,000	$ 192,500,000
Restricted stock units [Member] \| Executive [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Acceleration of vesting of shares of unvested equity awards						24,559
2021 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ordinary shares reserved for issuance						1,350,000
Maximum number of ordinary shares reserved for issuance						6,834,208
2012 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional ordinary shares reserved for issuance		0
Additional ordinary shares reserved for issuance					1,599,634
2017 Stock Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional ordinary shares reserved for issuance	0
Incentive stock options granted to 10% ownership [Member] \| Stock options [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase price of ordinary shares, percentage						110%
Non statutory stock options and incentive stock options granted to less than 10% ownership [Member] \| Stock options [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase price of ordinary shares, percentage						100%
ESPP [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase price of ordinary shares, percentage						85%	85%	85%
Percentage of salary contribution by employees						15%
Additional ordinary shares reserved for issuance			488,037	466,285
ESPP [Member] \| Scenario, plan automatically increased by the lessor of [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Annual increase in ordinary shares for available for future issuance			1,500,000	1,500,000
Annual shares increase for future issuance by percentage under 2012 employee stock purchase plan			1.25%	1.25%

Employee Benefits and Stock-b_4

Employee Benefits and Stock-based Compensation - Classification of Stock-based Compensation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Stock-based compensation:
Total stock-based compensation	$ 111,316	$ 111,158	$ 87,801
Cost of revenue [Member]
Stock-based compensation:
Total stock-based compensation	3,341	3,597	1,489
Research and development [Member]
Stock-based compensation:
Total stock-based compensation	72,759	71,236	54,787
Selling, general and administrative [Member]
Stock-based compensation:
Total stock-based compensation	$ 35,216	$ 36,325	$ 31,525

Employee Benefits and Stock-b_5

Employee Benefits and Stock-based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value (Detail)	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend yield	0%	0%	0%
Stock options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Volatility	0%	0%	51%
Risk-free interest rate	0%	0%	1.04%
Expected term (years)			5 years 21 days
Dividend yield	0%	0%	0%
Employee stock purchase plan awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Volatility	56%	81%	57%
Risk-free interest rate	5.11%	2.32%	0.06%
Expected term (years)	6 months	6 months	6 months
Dividend yield	0%	0%	0%

Employee Benefits and Stock-b_6

Employee Benefits and Stock-based Compensation - Stock Option Activities (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Share-Based Payment Arrangement [Abstract]
Shares, Outstanding	484,791	619,322	719,143
Shares, Granted			14,700
Shares, Assumed			163,581
Shares, Exercised	(104,931)	(121,624)	(269,287)
Shares, Forfeited	(926)	(10,618)	(7,669)
Shares, Expired	(5,616)	(2,289)	(1,146)
Shares, Outstanding	373,318	484,791	619,322
Shares, Exercisable	326,464
Weighted-Average Exercise Price, Outstanding	$ 42.18	$ 40.08	$ 38.33
Weighted-Average Exercise Price, Granted			110.19
Weighted-Average Exercise Price, Assumed			23.1
Weighted-Average Exercise Price, Exercised	26.06	30.34	28.23
Weighted-Average Exercise Price, Forfeited	42.59	55.97	68.95
Weighted-Average Exercise Price, Expired	63.39	39.19	9.86
Weighted-Average Exercise Price, Outstanding	46.39	$ 42.18	40.08
Weighted-Average Exercise Price, Exercisable	$ 47.75
Weighted-Average Grant-date Fair Value, Granted			50.28
Weighted-Average Acquisition-date Fair Value, Assumed			$ 173.04
Total Intrinsic Value of options Exercised	$ 4,479	$ 6,712	$ 25,622
Weighted-Average Remaining Contractual Term, Outstanding	3 years 5 months 4 days
Weighted-Average Remaining Contractual Term, Exercisable	2 years 11 months 12 days
Aggregate Intrinsic Value, Outstanding	$ 16,454
Aggregate Intrinsic Value, Exercisable	$ 13,920

Employee Benefits and Stock-b_7

Employee Benefits and Stock-based Compensation - Restricted Stock Unit Activities (Detail) - Restricted Stock Unit [Member] - $ / shares	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Unvested, beginning balance	2,573,359	2,651,135	2,871,801
Shares, Granted	1,305,401	1,549,174	1,213,257
Shares, Vested	(1,220,608)	(1,513,972)	(1,367,309)
Shares, Forfeited	(225,512)	(112,978)	(66,614)
Shares, Unvested, ending balance	2,432,640	2,573,359	2,651,135
Weighted-Average Grant-Date Fair Value, Unvested, beginning balance	$ 86.81	$ 85.41	$ 51.73
Weighted-Average Grant-Date Fair Value, Granted	70.32	74.45	128.8
Weighted-Average Grant-Date Fair Value, Vested	78.62	71.32	53.85
Weighted-Average Grant-Date Fair Value, Forfeited	81.79	99.46	71.59
Weighted-Average Grant-Date Fair Value, Unvested, ending balance	$ 82.54	$ 86.81	$ 85.41

Net Loss Per Ordinary Share - C

Net Loss Per Ordinary Share - Computation of Basic and Diluted Net Loss Per Ordinary Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Numerator:
Net loss	$ (169,417)	$ (65,386)	$ (26,411)
Denominator:
Weighted-average ordinary shares - basic	39,878,872	38,363,638	36,577,120
Weighted-average ordinary shares - diluted	39,878,872	38,363,638	36,577,120
Net loss per ordinary share:
Basic	$ (4.25)	$ (1.7)	$ (0.72)
Diluted	$ (4.25)	$ (1.7)	$ (0.72)

Net Loss Per Ordinary Share - W

Net Loss Per Ordinary Share - Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Ordinary Share (Detail) - shares	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share	1,793,597	1,898,390	1,724,742
Options to purchase ordinary shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share	234,088	336,828	327,747
Restricted stock units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share	1,549,026	1,550,679	1,388,091
Employee stock purchase plan awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share	10,483	10,883	8,904

Income Taxes - Summary of Loss

Income Taxes - Summary of Loss before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Results of Operations, Income before Income Taxes [Abstract]
U.S. operations	$ (33,953)	$ (18,968)	$ (5,842)
Non-U.S. operations	(114,577)	(51,970)	(22,799)
Loss before income taxes	$ (148,530)	$ (70,938)	$ (28,641)

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Current:
U.S. federal tax	$ 303	$ (3,525)	$ 907
U.S. state taxes	1	175	0
Non-U.S. foreign taxes	1,711	2,395	1,778
Current income tax provision	2,015	(955)	2,685
Deferred:
U.S. federal tax	18,909	(4,231)	(4,819)
U.S. state taxes	0	0	(14)
Non-U.S. foreign taxes	(37)	(366)	(82)
Deferred income tax provision	18,872	(4,597)	(4,915)
Provision (benefit) for income taxes	$ 20,887	$ (5,552)	$ (2,230)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
Income Taxes - Additional Information (Detail) - USD ($)	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Income Taxes [Line Items]
Statutory tax rate	21%	21%	21%
Deferred tax liabilities, not recognized	$ 7,800,000
Cumulative undistributed earnings of foreign subsidiaries	86,400,000
Net deferred tax liabilities after valuation allowance	656,000
Net deferred tax assets after valuation allowance		$ 18,032,000
Valuation allowance	60,036,000	28,596,000
Unrecognized tax benefits	22,628,000	21,656,000	$ 30,884,000	$ 29,527,000
Unrecognized tax benefits that would impact effective tax rate	3,100,000
Interest expense and penalties related to uncertain tax positions	50,000	(700,000)	$ 300,000
Noncurrent liabilities related to interest and penalties for uncertain tax positions	700,000	600,000
Increased (reduced) unrecognized tax benefits	1,000,000
Long term income taxes payable, including estimated interest and penalties	3,800,000
Maximum [Member]
Income Taxes [Line Items]
Increased (reduced) unrecognized tax benefits	(9,000,000)
Other Long-Term Liabilities [Member]
Income Taxes [Line Items]
Income tax liabilities considered as other long term liabilities	$ 3,100,000	$ 3,200,000
U.S. state tax authorities [Member] \| Earliest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2020
U.S. state tax authorities [Member] \| Latest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2024
U.S. federal tax authorities [Member] \| Earliest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2021
U.S. federal tax authorities [Member] \| Latest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2024
Foreign tax authorities [Member] \| Earliest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2017
Foreign tax authorities [Member] \| Latest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2024
California state [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 1,000,000
Net operating loss carryforwards begin to expire in fiscal year	2040
Research and development credit carryforwards	$ 34,600,000
Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	28,700,000
Research and development credit carryforwards	$ 24,000,000
Federal credits begin to expire in fiscal year	2036

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation Between the Provision (Benefit) for Income Taxes at the Statutory Rate and the Effective Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Income Tax Disclosure [Abstract]
Provision at U.S. notional statutory rate	$ (31,191)	$ (14,897)	$ (6,015)
U.S. state taxes	6	114	(11)
Non-U.S. foreign tax differential	25,736	12,943	6,483
Stock-based compensation	4,847	10,004	1,900
U.S. R&D credit	(7,232)	(5,045)	(5,886)
Valuation allowance	28,311	2,124	765
FIN48 interest	45	(739)	311
Uncertain tax position release	0	(10,188)	0
Other	365	132	223
Provision (benefit) for income taxes	$ 20,887	$ (5,552)	$ (2,230)

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Deferred tax assets:
Federal and state credits	$ 51,344	$ 40,134
Net operating losses	6,099	6,659
Expenses not currently deductible	3,988	3,164
Operating lease liabilities	1,009	1,582
Stock-based compensation	3,820	3,678
Other deferred tax assets	220	262
Gross deferred tax assets	66,480	55,479
Valuation allowance	(60,036)	(28,596)
Total deferred tax assets	6,444	26,883
Deferred tax liabilities
Intangible assets	(5,722)	(6,782)
Property and equipment	(460)	(617)
Operating lease assets	(918)	(1,452)
Net deferred tax assets		$ 18,032
Net deferred tax liabilities	$ (656)

Income Taxes - Summary of Tax V

Income Taxes - Summary of Tax Valuation Allowance (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 28,596
Balance at End of Period	60,036	$ 28,596
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	28,596	24,083	$ 17,962
Additions Charged to Expenses	31,440	4,513	4,874
Additions Charged to Other Account	0	0	1,247
Deductions Charged to Expenses or Other Accounts	0	0	0
Balance at End of Period	$ 60,036	$ 28,596	$ 24,083

Income Taxes - Schedule of Re_2

Income Taxes - Schedule of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Income Tax Disclosure [Abstract]
Beginning balance	$ 21,656	$ 30,884	$ 29,527
Additions based on tax positions related to the current year	997	1,033	1,412
Additions for tax positions of prior years	168	195	55
Reductions for tax positions in prior years	(38)	(45)	0
Settlements for prior periods	0	0	0
Lapse of applicable statute of limitations	(155)	(10,411)	(110)
Ending balance	$ 22,628	$ 21,656	$ 30,884

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	Jan. 31, 2024	Jan. 31, 2023
Loss Contingencies [Line Items]
Total manufacturing purchase commitments	$ 30,700,000	$ 43,600,000
Loss recognized from adverse purchase commitments	0	2,900,000
Indemnification agreement [Member]
Loss Contingencies [Line Items]
Payments under indemnification obligations	0
Liabilities recorded under indemnification obligations	0	0
Other Matters [Member]
Loss Contingencies [Line Items]
Liabilities recorded under indemnification obligations	$ 0	$ 0

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail) $ in Thousands	12 Months Ended
	Jan. 31, 2024 USD ($) Segment	Jan. 31, 2023 USD ($)	Jan. 31, 2022
Concentration Risk [Line Items]
Number of reportable segment \| Segment	1
Property and equipment, net	$ 10,439	$ 11,814
Accounts receivable	$ 24,950	$ 51,987
Sales revenue, net [Member] \| Wintech [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	53%	57%	62%
Sales revenue, net [Member] \| Chicony [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	14%	12%	13%
Accounts receivable [Member] \| Wintech [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 10,300	$ 21,000
Accounts receivable [Member] \| Chicony [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	7,000	9,400
Asia Pacific [Member]
Concentration Risk [Line Items]
Property and equipment, net	5,300	6,300
United States [Member]
Concentration Risk [Line Items]
Property and equipment, net	3,900	4,000
Europe [Member]
Concentration Risk [Line Items]
Property and equipment, net	$ 1,200	$ 1,500

Segment Reporting - Company's R

Segment Reporting - Company's Revenue by Geographic Region Based on Bill-to Location (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Revenue from External Customer [Line Items]
Total revenue	$ 226,474	$ 337,606	$ 331,856
Taiwan [Member]
Revenue from External Customer [Line Items]
Total revenue	119,601	191,692	205,079
Asia Pacific [Member]
Revenue from External Customer [Line Items]
Total revenue	58,506	73,476	81,623
Europe [Member]
Revenue from External Customer [Line Items]
Total revenue	11,949	26,921	18,459
North America other than United States [Member]
Revenue from External Customer [Line Items]
Total revenue	25,754	32,901	21,572
United States [Member]
Revenue from External Customer [Line Items]
Total revenue	$ 10,664	$ 12,616	$ 5,123