Intevac (IVAC) 10-K 17 Feb 22 2022 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Jan. 01, 2022	Feb. 14, 2022	Jul. 03, 2021
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Entity Interactive Data Current	Yes
Document Period End Date	Jan. 1, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Document Annual Report	true
Document Transition Report	false
Entity Registrant Name	INTEVAC, INC.
Entity Central Index Key	0001001902
Current Fiscal Year End Date	--01-01
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Trading Symbol	IVAC
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity File Number	0-26946
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-3125814
Entity Address, Address Line One	3560 Bassett 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	986-9888
Entity Small Business	true
Title of 12(b) Security	Common Stock
Entity Common Stock, Shares Outstanding		24,849,818
Security Exchange Name	NASDAQ
Entity Public Float			$ 155,279,012
ICFR Auditor Attestation Flag	false
Auditor Name	San Jose
Auditor Firm ID	207
Auditor Location	California

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Current assets:
Cash and cash equivalents	$ 102,728	$ 29,341
Short-term investments	10,221	14,839
Trade and other accounts receivable, net of allowances of $0 at both January 1, 2022 and January 2, 2021	14,261	28,646
Inventories	5,791	21,689
Prepaid expenses and other current assets	1,827	1,893
Total current assets	134,828	96,408
Property, plant and equipment, net	4,759	11,004
Operating lease right-of-use assets	4,520	8,165
Long-term investments	7,427	5,388
Restricted cash	786	787
Deferred income taxes and other long-term assets	5,449	5,486
Total assets	157,769	127,238
Current liabilities:
Current operating lease liabilities	3,119	2,853
Accounts payable	5,320	4,259
Accrued payroll and related liabilities	5,505	7,679
Other accrued liabilities	3,665	3,598
Customer advances	2,107	33
Total current liabilities	19,716	18,422
Noncurrent liabilities:
Noncurrent operating lease liabilities	3,675	6,803
Other long-term liabilities	363	457
Total noncurrent liabilities	4,038	7,260
Commitments and contingencies
Stockholders' equity:
Undesignated preferred stock, $0.001 par value, 10,000 shares authorized, no shares issued and outstanding		0
Common stock, $0.001 par value: Authorized shares — 50,000 issued and outstanding shares — 24,636 and 23,874 at January 1, 2022 and January 2, 2021, respectively	25	24
Additional paid-in capital	199,073	193,173
Treasury stock, 5,087 shares at both January 1, 2022 and January 2, 2021	(29,551)	(29,551)
Accumulated other comprehensive income	578	640
Accumulated deficit	(36,110)	(62,730)
Total stockholders' equity	134,015	101,556
Total liabilities and stockholders' equity	$ 157,769	$ 127,238

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Statement of Financial Position [Abstract]
Net of allowances of trade, note and other accounts receivable	$ 0	$ 0
Undesignated preferred stock, par value	$ 0.001	$ 0.001
Undesignated preferred stock, shares authorized	10,000	10,000
Undesignated preferred stock, shares issued	0	0
Undesignated preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000	50,000
Common stock, shares issued	24,636	23,874
Common stock, shares outstanding	24,636	23,874
Treasury stock, shares	5,087	5,087

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	Jan. 02, 2021	Jan. 01, 2022
Net revenues:
Total net revenues	$ 52,128	$ 38,524
Cost of net revenues:
Total cost of net revenues	29,711	31,457
Gross profit	22,417	7,067
Operating expenses:
Research and development	13,205	12,176
Selling, general and administrative	18,092	17,367
Total operating expenses	31,297	29,543
Operating loss	(8,880)	(22,476)
Interest income	284	29
Other income (expense), net	(128)	(35)
Loss from continuing operations before provision for income taxes	(8,724)	(22,482)
Provision for income taxes	1,711	575
Net loss from continuing operations	(10,435)	(23,057)
Income from discontinued operations:
Income (loss) from Photonics division, net of tax	11,491	(4,664)
Gain on sale of Photonics division, net of tax	0	54,341
Total income from discontinued operations, net of tax	11,491	49,677
Net income	$ 1,056	$ 26,620
Net income (loss) per share:
Basic and diluted—continuing operations	$ (0.44)	$ (0.95)
Basic and diluted—discontinued operations	0.49	2.04
Basic and diluted—net income	$ 0.04	$ 1.09
Weighted average shares outstanding:
Basic and diluted	23,669	24,348

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 26,620	$ 1,056
Other comprehensive income (loss), before tax
Change in unrealized net gain on available-for-sale investments	(68)	(5)
Foreign currency translation gains	6	221
Other comprehensive income (loss), before tax	(62)	216
Income tax expense related to items in other comprehensive income (loss)	0	0
Other comprehensive income (loss), net of tax	(62)	216
Comprehensive income	$ 26,558	$ 1,272

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income	Accumulated Deficit
Beginning balance at Dec. 28, 2019	$ 95,793	$ 23	$ 188,290	$ (29,158)	$ 424	$ (63,786)
Beginning Balance (in shares) at Dec. 28, 2019		23,346,000		4,989,000
Shares issued in connection with:
Exercise of stock options (in shares)		67,000
Exercise of stock options	$ 326		326
Settlement of RSUs (in shares)		244,000
Employee stock purchase plan (in shares)	392,000	392,000
Employee stock purchase plan	$ 1,571	$ 1	1,570
Shares withheld in connection with net share settlement of RSUs (in shares)		(77,000)
Shares withheld in connection with net share settlement of RSUs	(402)		(402)
Equity-based compensation expense	3,389		3,389
Net income	1,056					1,056
Other comprehensive income (loss)	216				216
Common stock repurchases	$ (393)			$ (393)
Common Stock Repurchases (in shares)	98,000	(98,000)		98,000
Ending balance at Jan. 02, 2021	$ 101,556	$ 24	193,173	$ (29,551)	640	(62,730)
Ending Balance (in shares) at Jan. 02, 2021		23,874,000		5,087,000
Beginning balance at Dec. 28, 2020					424
Shares issued in connection with:
Net income	1,056
Ending balance at Jan. 02, 2021	$ 101,556	$ 24	193,173	$ (29,551)	640	(62,730)
Ending Balance (in shares) at Jan. 02, 2021		23,874,000		5,087,000
Shares issued in connection with:
Exercise of stock options (in shares)	76,619	76,000
Exercise of stock options	$ 440		440
Settlement of RSUs (in shares)		383,000
Employee stock purchase plan (in shares)	435,000	435,000
Employee stock purchase plan	$ 2,192	$ 1	2,191
Shares withheld in connection with net share settlement of RSUs (in shares)		(132,000)
Shares withheld in connection with net share settlement of RSUs	(734)		(734)
Equity-based compensation expense	4,003		4,003
Net income	26,620					26,620
Other comprehensive income (loss)	(62)				(62)
Common stock repurchases	$ 0
Common Stock Repurchases (in shares)	0
Ending balance at Jan. 01, 2022	$ 134,015	$ 25	$ 199,073	$ (29,551)	$ 578	$ (36,110)
Ending Balance (in shares) at Jan. 01, 2022		24,636,000		5,087,000

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Operating activities
Net income	$ 26,620,000	$ 1,056,000
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Depreciation and amortization	3,456,000	3,206,000
Net amortization (accretion) of investment premiums and discounts	109,000	12,000
Amortization of intangible assets	0	274,000
Gain on sale of Photonics division	(54,341,000)
Asset impairment charges	1,246,000
Equity-based compensation	4,003,000	3,389,000
Straight-line rent adjustment and amortization of lease incentives	(463,000)	(286,000)
Deferred income taxes	25,000	917,000
Changes in assets and liabilities:
Accounts receivable	10,850,000	(27,000)
Inventories	9,597,000	3,218,000
Prepaid expenses and other assets	6,000	(462,000)
Accounts payable	(932,000)	60,000
Accrued payroll and other accrued liabilities	(1,972,000)	1,467,000
Customer advances	2,074,000	(3,974,000)
Total adjustments	(26,342,000)	7,794,000
Net cash and cash equivalents provided by operating activities	278,000	8,850,000
Investing activities
Purchase of investments	(17,148,000)	(23,342,000)
Proceeds from sales and maturities of investments	19,550,000	25,355,000
Proceeds from sale of Photonics division	70,000,000
Purchase of leasehold improvements and equipment	(1,198,000)	(2,612,000)
Net cash and cash equivalents provided by (used in) investing activities	71,204,000	(599,000)
Financing activities
Proceeds from issuance of common stock	2,632,000	1,897,000
Common stock repurchases	0	(393,000)
Taxes paid related to net share settlement	(734,000)	(402,000)
Net cash and cash equivalents provided by financing activities	1,898,000	1,102,000
Effect of exchange rate changes on cash	6,000	221,000
Net increase in cash, cash equivalents and restricted cash	73,386,000	9,574,000
Cash, cash equivalents and restricted cash at beginning of period	30,128,000	20,554,000
Cash, cash equivalents and restricted cash at end of period	103,514,000	30,128,000
Cash paid (received) for:
Income taxes	559,000	850,000
Income tax refund	$ (18,000)	$ (157,000)

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Jan. 01, 2022
Summary of Significant Accounting Policies	1. Summary of Significant Accounting Policies Principles of Consolidation and Basis of Presentation The consolidated financial statements include the accounts of Intevac, Inc. and its subsidiaries (Intevac, the Company or we) after elimination of inter-company balances and transactions. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. Fiscal Year End Date Intevac operates under a 52-53 Reportable Segment During fiscal 2021, we sold the business of one of our reporting segments, Photonics. Therefore, we have one reportable segment remaining. See Note 2 for additional disclosure related to discontinued operations. The remaining segment, Thin Film Equipment (“TFE”) segment, designs, develops and markets vacuum process equipment solutions for high-volume manufacturing of small substrates with precise thin-film properties, such as for the hard drive, solar cell, display cover panel (“DCP”) and advanced semiconductor packaging (“ASP”) industries, as well as other adjacent thin-film markets. Reclassification of Prior Periods On December 30, 2021, the Company completed the sale of its Photonics business to EOTECH, LLC, a Michigan limited liability company (“EOTECH”), in exchange for (i) $70.0 million in cash consideration (as may be increased or decreased by certain closing net working capital adjustments), (ii) up to $30.0 million in earnout payments and (iii) the assumption by EOTECH of certain liabilities of the Photonics business. Due to the sale of the Photonics business during the fourth quarter of 2021, we have classified the results of the Photonics business as discontinued operations in our consolidated statements of income for all periods presented. All amounts included in the Notes to Consolidated Financial Statements relate to continuing operations unless otherwise noted. Cash, Cash Equivalents and Investments Intevac considers all highly liquid investments with original maturities of three months or less when purchased to be cash equivalents. Available-for-sale available-for-sale Restricted Cash Restricted cash of $600,000 as of January 1, 2022 secures a standby letter of credit obligation associated with a lease obligation and the restriction on the cash will be removed when the letter of credit expires. In addition, Intevac pledged $186,000 as collateral for various guarantees with its bank. Derivative Instruments and Hedging Arrangements Foreign Exchange Exposure Management re-measurement non-functional Fair Value Measurement—Definition and Hierarchy Intevac reports certain financial assets and liabilities at fair value. Intevac defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements are classified and disclosed in one of the following three categories: Level 1 Level 2 Level 3 Trade Accounts Receivables and Doubtful Accounts Intevac evaluates the collectibility of trade accounts receivable on an ongoing basis and provides reserves against potential losses when appropriate. Management analyzes historical bad debts, customer concentrations, customer creditworthiness, changes in customer payment tendencies and current economic trends when evaluating the adequacy of the allowance for doubtful accounts. Customer accounts are written off against the allowance when the amount is deemed uncollectible. Inventories Inventories are generally stated at the lower of cost or net realizable value, with cost determined on an average cost basis. Property, Plant and Equipment Equipment and leasehold improvements are stated at cost. Depreciation is computed using the straight-line method over the estimated useful lives of the assets as follows: computers and software, 3 years; machinery and equipment, 5 years; furniture, 7 years; vehicles, 4 years; and leasehold improvements, remaining lease term. Impairment of Long-Lived Assets Long-lived assets and certain identifiable finite-lived intangible assets to be held and used are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Determination of recoverability of long-lived assets is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition. Measurement of an impairment loss for long-lived assets and certain identifiable intangible assets that management expects to hold and use is based on the fair value of the asset. When an impairment loss is recognized, the carrying amount of the asset is reduced to its estimated fair value. Income Taxes Intevac accounts for income taxes by recognizing deferred tax assets and liabilities using enacted tax rates for the effect of temporary differences between the book and tax bases of recorded assets and liabilities. Deferred tax assets and liabilities are recognized using enacted tax rates for the effect of temporary differences between book and tax bases of recorded assets and liabilities. Deferred tax assets are reduced by a valuation allowance if it is more likely than not that a portion of the deferred tax asset will not be realized. In determining whether to establish or maintain a valuation allowance against a deferred tax asset, the Company reviews available evidence to determine whether it is more likely than not that all or a portion of the Company’s net deferred tax assets will be realized in future periods. Consideration is given to various positive and negative factors that could affect the realization of the net deferred tax assets. In making such a determination, the Company considers, among other things, future reversals of existing taxable temporary differences, projected future taxable income, tax-planning The effective tax rate is highly dependent upon the level of Intevac’s projected earnings, the geographic composition of worldwide earnings, tax regulations governing each region, net operating loss carryforwards, availability of tax credits and the effectiveness of Intevac’s tax planning strategies. Intevac carefully monitors the changes in many factors and adjust its effective income tax rate on a timely basis. If actual results differ from the estimates, this could have a material effect on Intevac’s business, financial condition and results of operations. The calculation of tax liabilities involves significant judgment in estimating the impact of uncertainties in the application of complex tax laws. Resolution of these uncertainties in a manner inconsistent with Intevac’s expectations could have a material effect on Intevac’s business, financial condition and results of operations. Intevac recognizes accrued interest and penalties related to unrecognized tax benefits in the provision for income taxes. Sales and Value Added Taxes Taxes collected from customers and remitted to governmental authorities are presented on a net basis in the accompanying consolidated statements of income. Revenue Recognition A majority of our equipment sales revenue, which includes systems, technology upgrades, service and spare parts is recognized when products are shipped from our manufacturing facilities. We recognize revenue for equipment sales at a point in time following the transfer of control of such products to the customer, which typically occurs upon shipment or delivery depending on the terms of the underlying contracts. Intevac recognizes revenue in certain circumstances before delivery has occurred (commonly referred to as bill and hold transactions). In such circumstances, among other things, risk of ownership has passed to the customer, the customer has made a written fixed commitment to purchase the finished goods, the customer has requested the finished goods be held for future delivery as scheduled and designated by them, and no additional performance obligations exist by Intevac. For these transactions, the finished goods are segregated from inventory and normal billing and credit terms granted. Our contracts with customers may include multiple performance obligations. For such arrangements, under the revenue standard we allocate revenue to each performance obligation based on its relative standalone selling price. We generally determine standalone selling prices based on the prices charged to customers or by using expected cost plus margin. Under the revenue standard, the expected costs associated with our base warranties are recognized as expense when the equipment is sold. Government Grants and Credits The Company generally records grants from governmental agencies related to income as a reduction in operating expense. Grants are recognized when there is reasonable assurance that the Company will comply with the conditions attached to the grant arrangement and the grant will be received. Reimbursements of eligible expenditures pursuant to government assistance programs are recorded as reductions of operating costs when the related costs have been incurred and there is reasonable assurance regarding collection of the claim. Grant claims not settled by the balance sheet date are recorded as receivables, provided their receipt is reasonably assured. The determination Advertising Costs Advertising costs are expensed as incurred. Advertising costs were not material for all periods presented. Foreign Currency Translation The functional currency of Intevac’s foreign subsidiaries in Singapore and Hong Kong and the Taiwan branch is the U.S. dollar. The functional currency of Intevac’s foreign subsidiaries in China, Malaysia and Korea is the local currency of the country in which the respective subsidiary operates. Assets and liabilities recorded in foreign currencies are translated at year-end Comprehensive Income (Loss) The changes in accumulated other comprehensive income (loss) by component, were as follows for the years ended January 1, 2022 and January 2, 2021: Foreign Unrealized holding available-for-sale Total (in thousands) Balance at December 28, 2019 $ 381 $ 43 $ 424 Other comprehensive income (loss) before reclassification 221 (5 ) 216 Amounts reclassified from other comprehensive income (loss) — — — Net current-period other comprehensive income (loss) 221 (5 ) 216 Balance at January 2, 2021 602 38 640 Other comprehensive income (loss) before reclassification 6 (68 ) (62 ) Amounts reclassified from other comprehensive income (loss) — — — Net current-period other comprehensive income (loss) 6 (68 ) (62 ) Balance at January 1, 2022 $ 608 $ (30 ) $ 578 Employee Stock Plans Intevac has equity-based compensation plans that provide for the grant to employees of equity-based awards, including incentive or non-statutory non-statutory non-employee Recent Accounting Pronouncements Not Yet Adopted In November 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2021-10, Disclosures by Business Entities about Government Assistance In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848) 2021-01, Reference Rate Reform (Topic 848): Scope 2020-04 2020-04. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326).

Divestiture and Discontinued Op

Divestiture and Discontinued Operations	12 Months Ended
	Jan. 01, 2022
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract]
Divestiture and Discontinued Operations	2. Divestiture and Discontinued Operations Sale of Photonics On December 30, 2021, the Company entered into an asset purchase agreement (the “Purchase Agreement”) with EOTECH, governing the sale of the Company’s Photonics business to EOTECH in exchange for (i) $70.0 million in cash consideration (as may be increased or decreased by certain closing net working capital adjustments), (ii) up to $30.0 million in earnout payments and (iii) the assumption by EOTECH of certain liabilities of the Photonics business as specified in the Purchase Agreement. The transaction closed on December 30, 2021. Under the Purchase Agreement, EOTECH has also agreed to pay to the Company, if earned, earnout payments of up to an aggregate of $30.0 million based on achievement of fiscal year 2023, 2024 and 2025 Photonics segment revenue targets for the Integrated Visual Augmentation System (“IVAS”) program as specified in the Purchase Agreement. At any time prior to December 31, 2024, EOTECH may elect to pay to the Company $14.0 million, which would terminate EOTECH’s obligations with respect to any remaining earnout payments. The cash proceeds do not include any estimated future payments from the revenue earnout as the Company has elected to record the proceeds when the consideration is deemed realizable. The Company believes this disposition will allow it to benefit from a streamlined business model, simplified operating structure, and enhanced management focus. In connection with the Photonics sale, the Company and EOTECH have entered into a Transition Service Agreement (“TSA”) and a Lease Assignment Agreement. The TSA outlines the information technology, people, and facility support the parties will provide to each other for a period anticipated to be up to six months after the closing of the sale. The Lease Assignment Agreement assigns the lease obligation for two buildings in the company’s California campus to EOTECH. As part of the assignment, the Company has agreed to subsidize a portion of the EOTECH’s lease payments through the remainder of the lease term which expires in March 2024. The following table summarizes the components of the gain on sale of the Photonics segment (in thousands): Cash proceeds $ 70,000 Working capital adjustment (74 ) 69,926 Assets sold: Accounts receivable 3,535 Inventories 6,301 Other current assets 72 Property, plant and equipment 3,987 Total assets sold 13,895 Liabilities divested: Accounts payable 888 Other accrued expenses 594 Total liabilities divested 1,482 Transaction and other costs (3,172 ) Gain on sale $ 54,341 Discontinued operations Based on its magnitude and because the Company exited certain markets, the sale of the Photonics segment represents a significant strategic shift that has a material effect on the Company’s operations and financial results, and the Company has separately reported the results of its Photonics segment as discontinued operations in the consolidated statements of income for the years ended January 1, 2022 and January 2, 2021. The operating results of the discontinued operations only reflect revenues and expenses that are directly attributable to the Photonics segment that have been eliminated from continuing operations. Previously reported expenses for the Photonics segment have been recast to exclude certain allocated expenses that are not directly attributable to the Photonics segment. The key components from discontinued operations related to the Photonics segment are as follows (in thousands): Year Ended, January 1, January 2, (In thousands, except per share amounts) Net revenues: Systems and components $ 15,932 $ 22,751 Technology development 11,735 22,945 Total net revenues 27,667 45,696 Cost of net revenues: Systems and components 12,252 12,520 Technology development 8,885 15,048 Total cost of net revenues 21,137 27,568 Gross profit 6,530 18,128 Year Ended, January 1, January 2, (In thousands, except per share amounts) Operating expenses: Research and development 2,653 888 Selling, general and administrative 5,937 5,805 Asset impairment and restructuring charges 2,604 — Total operating expenses 11,194 6,693 Operating income (loss)—discontinued operations (4,664 ) 11,435 Other income (expense)—discontinued operations — 56 Income (loss) discontinued operations before provision for (benefit from) income taxes (4,664 ) 11,491 Gain on disposal of discontinued operations before income taxes 54,341 — Total income from discontinued operations, before tax 49,677 11,491 Provision for (benefit from) income taxes — — Net income from discontinued operations net of tax $ 49,677 $ 11,491 The cash flows related to discontinued operations have not been segregated and are included in the consolidated statements of cash flows. The following table presents cash flow and non-cash 2021 2020 (in thousands) Depreciation and amortization $ 1,366 $ 1,123 Amortization of intangible assets $ — $ 36 Asset impairment charges $ 1,246 $ — Equity-based compensation $ 1,167 $ 959 Purchase of leasehold improvements and equipment $ 429 $ 636 Revenue recognition The Photonics segment recognized revenues for cost plus fixed fee (“CPFF”) and firm fixed price (“FFP”) government contracts over time under the cost-to-cost non-U.S. cost-to-cost The majority of the contracts in the Photonics segment had a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and, therefore, not distinct. Some of the contracts have multiple performance obligations, most commonly due to the contract covering multiple phases of the product lifecycle (development and production). For contracts with multiple performance obligations, the contract’s transaction price was allocated to each performance obligation using the best estimate of the standalone selling price of each distinct good or service in the contract. The primary method used to estimate standalone selling price is the expected cost plus a margin approach, under which the expected costs of satisfying a performance obligation is forecasted and then an appropriate margin is added for that distinct good or service. In the Photonics segment, revenue for homogenous manufactured military products sold to the U.S. government and its contractors was recognized over time under the units-of-delivery units-of-delivery The nature of the contracts in the Photonics segment gave rise to several types of variable consideration including tiered pricing. Allocation of contract revenues among Photonics military products, and the timing of the recognition of those revenues, was impacted by agreements with tiered pricing or variable rate structures. Variable consideration was included in the estimated transaction price when there was a basis to reasonably estimate the amount of the consideration. These estimates were based on historical experience, anticipated performance and our best judgment at the time. Because of the certainty in estimating these amounts, they were included in the transaction price of our contracts and the associated remaining performance obligations. Accounting for CPFF and FFP contracts and programs involves the use of various techniques to estimate total contract revenue and costs. For these contracts, the profit on a contract was estimated as the difference between the total estimated revenue and expected costs to complete a contract and recognize that profit over the life of the contract. Contract estimates were based on various assumptions to project the outcome of future events. These assumptions included the complexity of the work to be performed; the cost and availability of materials; the performance of subcontractors; and the availability and timing of funding from the customer. As a significant change in one or more of these estimates could affect the profitability of the contracts, the contract-related estimates were reviewed and updated regularly. Adjustments in estimated profit on contracts were recognized under the cumulative catch-up Impairment of Long-Lived Assets In the fourth fiscal quarter of 2021, as a result of and in consideration of the Photonics sale, the assignment of leased space to EOTECH and the agreement to subsidize EOTECH for spaces that will no longer be utilized, the Company evaluated its lease right-of-use

Revenue

Revenue	12 Months Ended
	Jan. 01, 2022
Revenue from Contract with Customer [Abstract]
Revenue	3. Revenue The following tables represent a disaggregation of revenue from contracts with customers for fiscal 2021 and 2020. Major Products and Service Lines 2021 2020 (in thousands) HDD DCP PV ASP Total HDD PV Total Systems, upgrades and spare parts $ 28,300 $ 3 $ 258 $ 3,850 $ 32,411 $ 45,620 $ 426 $ 46,046 Field service 6,031 14 68 — 6,113 6,080 2 6,082 Total TFE net revenues $ 34,331 $ 17 $ 326 $ 3,850 $ 38,524 $ 51,700 $ 428 $ 52,128 Primary Geography Markets 2021 2020 (in thousands) United States $ 3,670 $ 6,450 Asia 31,004 45,611 Europe 3,850 67 Total net revenues $ 38,524 $ 52,128 Timing of Revenue Recognition 2021 2020 (in thousands) Products transferred at a point in time $38,524 $52,128 Products and services transferred over time — — Total net revenues $ 38,524 $ 52,128 The following table reflects the changes in our contract assets, which we classify as accounts receivable, unbilled or retainage and our contract liabilities which we classify as deferred revenue and customer advances for fiscal 2020: January 1, January 2, Change (In thousands) TFE: Contract assets: Accounts receivable, unbilled $ 99 $ 369 $ (270 ) Contract liabilities: Deferred revenue $ 65 $ 482 $ (417 ) Customer advances 2,107 33 2,074 $ 2,172 $ 515 $ 1,657 Photonics (included in discontinued operations): Contract assets: Accounts receivable, unbilled $ — $ 5,439 $ (5,439 ) Retainage — 126 (126 ) $ — $ 5,565 $ (5,565 ) Contract liabilities: Deferred revenue $ — $ 779 $ (779 ) Accounts receivable, unbilled in our TFE segment represents a contract asset for revenue that has been recognized in advance of billing the customer. For our system and certain upgrade sales, our TFE customers generally pay in three Customer advances in our TFE segment generally represent amounts billed to the customer prior to transferring goods which represents a contract liability. The Company has elected to use the practical expedient to disregard the effect of the time value of money in a significant financing component when its payment terms are less than one year. These contract advances are liquidated when revenue is recognized. Deferred revenue in our TFE segment generally represents amounts billed to a customer for completed systems at the customer site that are undergoing installation and acceptance testing where transfer of control has not yet occurred as Intevac does not yet have a demonstrated history of meeting the acceptance criteria upon the customer’s receipt of product and represents a contract liability. During fiscal 2021, we recognized revenue in our TFE segment of $33,000 and $427,000 that was included in customer advances and deferred revenue, respectively, at the beginning of the period. On January 1, 2022, we had $24.7 million of remaining performance obligations, which we also refer to as backlog and expect to recognize as revenue in 2022. On December 30, 2021, we sold assets comprising our Photonics business and we have separately reported the results of our Photonics segment as discontinued operations in our consolidated statements of income for the years ended January 1, 2022 and January 2, 2021, respectively. Accounts receivable, unbilled in our Photonics segment represented a contract asset for revenue that had been recognized in advance of billing the customer, which is common for contracts in the defense industry. In the Photonics segment, amounts were billed as work progressed in accordance with agreed-upon contractual terms, either at periodic intervals (e.g., monthly) or upon achievement of contractual milestones. Generally, billing occurred subsequent to revenue recognition, resulting in contract assets. These contracts with the U.S. government also contained retainage provisions. Retainage represents a contract asset for the portion of the contract price earned for work performed but held for payment by the U.S. government as a form of security until satisfactory completion of the contract. The retainage was billable upon completion of the contract performance and approval of final indirect expense rates by the government. During fiscal 2021, contract assets in the Photonics segment decreased by $5.6 million primarily due to invoicing upon the achievement of contractual milestones, offset in part to the revenue recognized reported in discontinued operations on FFP contracts in advance of billing and the accrual of revenue reported in discontinued operations incurred costs under CPFF contracts. Deferred revenue in the Photonics segment generally represented a contract liability for amounts billed to the customer upon achievement of contractual milestones. These amounts are liquidated when revenue was recognized. During fiscal 2021, the Photonics segment recognized revenue of $779,000 reported in discontinued operations that was included in deferred revenue at the beginning of the period.

Equity-Based Compensation

Equity-Based Compensation	12 Months Ended
	Jan. 01, 2022
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Equity-Based Compensation	4. Equity-Based Compensation Intevac accounts for share-based awards in accordance with the provisions of the accounting guidance which requires the measurement and recognition of compensation expense for all share-based payment awards made to employees, consultants and directors based upon the grant-date fair value of those awards. The estimated fair value of Intevac’s equity-based awards is amortized over the awards’ service periods using the graded vesting attribution method. Descriptions of Plans Equity Incentive Plans At January 1, 2022, Intevac had equity-based awards outstanding under the 2020 Equity Incentive Plan and the 2012 Equity Incentive Plan (the “Plans”) and the 2003 Employee Stock Purchase Plan (the “ESPP”). Intevac’s stockholders approved all of these plans. The Plans are a broad-based, long-term retention program intended to attract and retain qualified management and employees, and align stockholder and employee interests. The Plans permit the grant of incentive or non-statutory On January 19, 2022, the Board of Directors adopted the 2022 Inducement Equity Incentive Plan (the “Inducement Plan”) and, subject to the adjustment provisions of the Inducement Plan, reserved 1,200,000 shares of the Company’s common stock for issuance pursuant to equity awards granted under the Inducement Plan. The Inducement Plan provides for the grant of equity-based awards, including nonstatutory stock options, restricted stock units, restricted stock, stock appreciation rights, performance shares and performance units, and its terms are substantially similar to the Company’s 2020 Equity Incentive Plan. The Inducement Plan was adopted without stockholder approval pursuant to Rule 5635(c)(4) of the Nasdaq Listing Rules. In accordance with that rule, awards under the Inducement Plan may only be made to individuals not previously employees or non-employee directors of non-employment with 2003 Employee Stock Purchase Plan The ESPP provides that eligible employees may purchase Intevac’s common stock through payroll deductions at a price equal to 85% of the lower of the fair market value at the entry date of the applicable offering period or at the end of each applicable purchase interval. Offering periods are generally two years in length, and consist of a series of six-month six-month The effect of recording equity-based compensation for fiscal 2021 and 2020 was as follows (in thousands): 2021 2020 Equity-based compensation by type of award: Stock options $198 $504 RSUs 2,819 1,936 Employee stock purchase plan 986 949 Total equity-based compensation * $ 4,003 $ 3,389 *Included in the table above, equity based compensation reported in discontinued operations of $1.2 million and $1.0 million for fiscal years 2021 and 2020, respectively. Equity-based compensation expense is based on awards which vest. Intevac accounts for forfeitures as they occur, rather than estimating expected forfeitures. Stock Options The exercise price of each stock option equals the market price of Intevac’s stock on the date of grant. Most options are scheduled to vest over three 2021 2020 Stock Options: Weighted-average fair value of grants per share — $ 1.82 Expected volatility — 46.06 % Risk free interest rate — 0.44% Expected term of options (in years) — 4.39 Dividend yield — None The computation of the expected volatility assumption used in the Black-Scholes calculations for new grants is based on historical volatility of Intevac’s stock price. The risk-free interest rate is based on the yield available on U.S. Treasury Strips with an equivalent remaining term. The expected life of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding and was determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards and vesting schedules. The dividend yield assumption is based on Intevac’s history of not paying dividends and the assumption of not paying dividends in the future. A summary of the stock option activity is as follows: Shares Weighted Exercise Weighted Average Aggregate Intrinsic Value Options outstanding at January 2, 2021 1,814,467 $ 6.66 3.08 $ 2,520,722 Options cancelled and forfeited (280,261 ) $ 7.44 Options exercised (76,619 ) $ 5.74 Options outstanding at January 1, 2022 1,457,587 $ 6.55 2.31 $ 7,622 Options exercisable at January 1, 2022 1,267,664 $ 6.74 2.08 $ 3,513 The total intrinsic value of options exercised during fiscal years 2021 and 2020 was $101,000 and $110,000, respectively. At January 1, 2022, Intevac had $78,000 of total unrecognized compensation expense related to stock option plans that will be recognized over the weighted-average period of 0.72 years. RSUs A summary of the RSU activity is as follows: Shares Weighted Weighted Average Aggregate Non-vested 901,634 $ 5.30 1.50 $ 6,500,781 Granted 606,705 $ 6.03 Vested (382,747 ) $ 5.71 Cancelled (92,156 ) $ 4.79 Non-vested 1,033,436 $ 5.59 1.39 $ 4,867,484 Time-based RSUs are converted into shares of Intevac common stock upon vesting on a one-for-one three In May 2021, we granted 126,320 performance-based restricted stock units (“PRSUs”) to members of our senior management. The number of PRSUs that will vest is determined by our common stock achieving a certain Total Shareholder Return (“TSR”) for the Company, relative to the TSR of a specified peer group over a measurement period of two years from the time of grant. The fair value of each PRSU award was estimated on the date of grant using a Monte Carlo simulation. PRSU activity is included in the above RSU table. At the end of the performance measurement period, the Compensation Committee of the Board of Directors (the “Compensation Committee”) will determine the achievement against the performance objectives. Depending on the Company’s TSR relative to the peer group TSR, the actual number of shares that will be vested for each PRSU grant can range from zero to 200% of the initial grant. Intevac estimated the weighted-average fair value of PRSUs using the following weighted-average assumptions: 2021 Weighted-average fair value of grants per share $ 7.65 Expected volatility 56.26 % Risk-free interest rate 0.15 % Dividend yield None In May 2020, we granted 109,465 PRSUs to members of our senior management. The PRSUs were issued collectively in four separate tranches with individual one-year Intevac estimated the weighted-average fair value of PRSUs using the following weighted-average assumptions: 2020 Weighted-average fair value of grants per share $ 3.16 Expected volatility 46.7 % Risk-free interest rate 0.25 % Dividend yield None ESPP The fair value of the employee stock purchase right is estimated on the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions: 2021 2020 Stock Purchase Rights: Weighted-average fair value of grants per share $ 2.59 $ 2.20 Expected volatility 60.88 % 51.49 % Risk free interest rate 0.08 % 0.14 % Expected term of purchase rights (in years) 0.91 1.24 Dividend yield None None The expected life of purchase rights is the period of time remaining in the current offering period. The ESPP activity during fiscal 2021 and 2020 is as follows: 2021 2020 (in thousands, except per share amounts) Shares purchased 435 392 Weighted-average purchase price per share $ 5.05 $ 4.01 Aggregate intrinsic value of purchase rights exercised $ 671 $ 765 As of January 1, 2022, Intevac had $215,000 of total unrecognized compensation expense related to purchase rights that will be recognized over the weighted-average period of 0.5 years.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Jan. 01, 2022
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	5. Earnings Per Share Intevac calculates basic earnings per share (“EPS”) using net income (loss) and the weighted-average number of shares outstanding during the reporting period. Diluted EPS includes the effect from potential issuance of common stock pursuant to the exercise of employee stock options and vesting of RSUs. The following table sets forth the computation of basic and diluted net income (loss) per share: 2021 2020 (in thousands, except per share amounts) Net loss from continuing operations $ (23,057 ) $ (10,435 ) Net income from discontinued operations, net of tax 49,677 11,491 Net income $ 26,620 $ 1,056 Weighted-average shares – basic 24,348 23,669 Effect of dilutive potential common shares — — Weighted-average shares – diluted 24,348 23,669 Basic and diluted net income (loss) per share: Continuing operations $ (0.95 ) $ (0.44 ) Discontinued operations $ 2.04 $ 0.49 Net income per share $ 1.09 $ 0.04 As the Company is in a net loss position from continuing operations, all of the Company’s equity instruments are considered antidilutive.

Concentrations

Concentrations	12 Months Ended
	Jan. 01, 2022
Risks and Uncertainties [Abstract]
Concentrations	6. Concentrations Credit Risk and Significant Customers Financial instruments that potentially subject the Company to significant concentrations of credit risk consist of cash equivalents, short- and long-term investments, restricted cash, and accounts receivable. Intevac generally invests its excess cash in money market funds, certificates of deposit, commercial paper, obligations of the U.S. government and its agencies, corporate debt securities, asset backed securities and municipal bonds. The Company has adopted an investment policy and established guidelines relating to credit quality, diversification and maturities of its investments in order to preserve principal and maintain liquidity. All investment securities in Intevac’s portfolio have an investment grade credit rating. Intevac’s accounts receivable tend to be concentrated in a limited number of customers. The following customers accounted for at least 10 percent of Intevac’s accounts receivable at January 1, 2022 and January 2, 2021. 2021 2020 Seagate Technology 47 % 45 % Western Digital Corporation 30 % 16 % Amkor Technology, Inc. 22 % * U.S. Government (included in discontinued operations). — 26 % * Less than 10% Intevac’s largest customers tend to change from period to period. Historically, a significant portion of Intevac’s revenues in any particular period have been attributable to sales to a limited number of customers. Intevac performs credit evaluations of its customers’ financial condition and generally requires deposits on system orders but does not generally require collateral or other security to support customer receivables. The following customers accounted for at least 10 percent of Intevac’s consolidated net revenues in fiscal 2021 and/or 2020. 2021 2020 Seagate Technology 60 % 79 % Western Digital Corporation 25 % 18 % Amkor Technology, Inc. 10 % * * Less than 10% Products Disk manufacturing products contributed a significant portion of Intevac’s revenues in fiscal 2021 and 2020. Intevac expects that the ability to maintain or expand its current levels of revenues in the future will depend upon continuing market demand for its products; its success in enhancing its existing systems and developing and manufacturing competitive disk manufacturing equipment, such as the 200 Lean; its success in utilizing Intevac’s expertise in complex manufacturing equipment to develop and sell new manufacturing equipment products for PV, DCP and ASP.

Balance Sheet Details

Balance Sheet Details	12 Months Ended
	Jan. 01, 2022
Balance Sheet Details	7. Balance Sheet Details Balance sheet details were as follows as of January 1, 2022 and January 2, 2021: Trade and Other Accounts Receivable, Net January 1, January 2, (in thousands) Trade receivables and other $ 14,162 $ 22,712 Unbilled costs and accrued profits 99 5,934 Less: allowance for doubtful accounts — — $ 14,261 $ 28,646 Inventories Inventories are stated at the lower of average cost or net realizable value and consist of the following: January 1, January 2, (in thousands) Raw materials $ 5,323 $ 9,999 Work-in-progress 468 4,832 Finished goods — 6,858 $ 5,791 $ 21,689 Property, Plant and Equipment, Net January 1, January 2, (in thousands) Leasehold improvements $ 9,847 $ 16,323 Machinery and equipment 23,818 46,846 33,665 63,169 Less accumulated depreciation and amortization 28,906 52,165 Total property, plant and equipment, net $ 4,759 $ 11,004 Net property, plant and equipment by geographic region at January 1, 2022 and January 2, 2021 was as follows: January 1, January 2, (in thousands) United States $ 4,385 $ 10,678 Asia 374 326 Net property, plant & equipment $ 4,759 $ 11,004 Deferred Income Taxes and Other Long-Term Assets January 1, January 2, (in thousands) Deferred income taxes $ 5,310 $ 5,335 Prepaid expenses 139 151 $ 5,449 $ 5,486 Accounts Payable Included in accounts payable is $109,000 and $84,000 of book overdraft at January 1, 2022 and January 2, 2021, respectively. Other Accrued Liabilities January 1, January 2, (in thousands) Other taxes payable $ 1,318 $ 935 Litigation settlement 1,000 — Income taxes payable 370 263 Restructuring 347 — Accrued product warranties 301 405 Other 264 734 Deferred revenue 65 1,261 Total other accrued liabilities $ 3,665 $ 3,598 Other Long-Term Liabilities January 1, January 2, (in thousands) Restructuring $ 318 $ — Accrued product warranties 45 75 Employer payroll taxes — 382 Total other long-term liabilities $ 363 $ 457

Financial Instruments

Financial Instruments	12 Months Ended
	Jan. 01, 2022
Cash Flow Hedges Derivative Instruments at Fair Value, Net [Abstract]
Financial Instruments	8. Financial Instruments Cash, Cash Equivalents and Investments Cash and cash equivalents, short-term investments and long-term investments consist of: January 1, 2022 Amortized Unrealized Unrealized Fair Value (in thousands) Cash and cash equivalents: Cash $ 102,494 $ — $ — $ 102,494 Money market funds 234 — — 234 Total cash and cash equivalents $ 102,728 $ — $ — $ 102,728 Short-term investments: Certificates of deposit $ 4,300 $ — $ — $ 4,300 Commercial paper 400 — — 400 Corporate bonds and medium-term notes 2,916 — 3 2,913 Municipal bonds 700 — — 700 U.S. treasury securities 1,910 — 2 1,908 Total short-term investments $ 10,226 $ — $ 5 $ 10,221 Long-term investments: Asset backed securities $ 2,040 $ — $ 3 $ 2,037 Certificates of deposit 500 — 3 497 Corporate bonds and medium-term notes 1,521 — 6 1,515 Municipal bonds 145 — 1 144 U.S. treasury securities 3,246 — 12 3,234 Total long-term investments $ 7,452 $ — $ 25 $ 7,427 Total cash, cash equivalents, and investments $ 120,406 $ — $ 30 $ 120,376 January 2, 2021 Amortized Unrealized Unrealized Fair (in thousands) Cash and cash equivalents: Cash $ 24,729 $ — $ — $ 24,729 Money market funds 3,612 — — 3,612 Certificates of deposit 1,000 — — 1,000 Total cash and cash equivalents $ 29,341 $ — $ — $ 29,341 Short-term investments: Certificates of deposit $ 6,450 $ 2 $ — $ 6,452 Commercial paper 500 — — 500 Corporate bonds and medium-term notes 2,929 6 — 2,935 Municipal bonds 400 — — 400 U.S. treasury securities 4,527 25 — 4,552 Total short-term investments $ 14,806 $ 33 $ — $ 14,839 Long-term investments: Certificates of deposit $ 500 $ — $ — $ 500 Corporate bonds and medium-term notes 3,474 4 — 3,478 U.S. treasury securities 1,409 1 — 1,410 Total long-term investments $ 5,383 $ 5 $ — $ 5,388 Total cash, cash equivalents, and investments $ 49,530 $ 38 $ — $ 49,568 The contractual maturities of investment securities at January 1, 2022 are presented in the following table. Amortized Cost Fair Value (in thousands) Due in one year or less $ 10,460 $ 10,455 Due after one through five years 7,452 7,427 $ 17,912 $ 17,882 The following table provides the fair market value of Intevac’s investments with unrealized losses that are not deemed to be other-than temporarily impaired as of January 1, 2022. January 1, 2022 In Loss Position for Less than 12 Months In Loss Position for Greater than 12 Months Fair Value Gross Unrealized Fair Value Gross Unrealized (In thousands) Asset backed securities $ 2,037 $ 3 $ — $ — Certificates of deposit 1,497 3 — — Corporate bonds and medium-term notes 3,424 9 — — Municipal bond 464 1 — — U.S. treasury securities 4,642 14 — — $ 12,064 $ 30 $ — $ — All prices for the fixed maturity securities including U.S. treasury and agency securities, asset backed securities, certificates of deposit, commercial paper, corporate bonds, and municipal bonds are received from independent pricing services utilized by Intevac’s outside investment manager. This investment manager performs a review of the pricing methodologies and inputs utilized by the independent pricing services for each asset type priced by the vendor. In addition, on at least an annual basis, the investment manager conducts due diligence visits and interviews with each pricing vendor to verify the inputs utilized for each asset class. The due diligence visits include a review of the procedures performed by each vendor to ensure that pricing evaluations are representative of the price that would be received to sell a security in an orderly transaction. Any pricing where the input is based solely on a broker price is deemed to be a Level 3 price. Intevac uses the pricing data obtained from its outside investment manager as the primary input to make its assessments and determinations as to the ultimate valuation of the above-mentioned securities and has not made, during the periods presented, any material adjustments to such inputs. The following table represents the fair value hierarchy of Intevac’s investment securities measured at fair value on a recurring basis as of January 1, 2022. Fair Value Measurements at January 1, 2022 Total Level 1 Level 2 (in thousands) Recurring fair value measurements: Money market funds $ 234 $ 234 $ — U.S. treasury securities 5,142 5,142 — Asset backed securities 2,037 — 2,037 Certificates of deposit 4,797 — 4,797 Commercial paper 400 — 400 Corporate bonds and medium-term notes 4,428 — 4,428 Municipal bonds 844 — 844 Total recurring fair value measurements $ 17,882 $ 5,376 $ 12,506 Derivatives The Company uses foreign currency forward contracts to mitigate variability in gains and losses generated from the re-measurement re-measurement The following table summarizes the Company’s outstanding derivative instruments on a gross basis as recorded in its consolidated balance sheets as of January 1, 2022 and January 2, 2021: Notional Amounts Derivative Derivative Liabilities Derivative Instrument January 1, January 2, January 1, January 2, Balance Sheet Line Fair Value Balance Sheet Line Fair Value (in thousands) Undesignated Hedges: Forward Foreign Currency Contracts $ 815 983 a $ 1 b $ 3 Total Hedges $ 815 983 $ 1 $ 3 a Other current assets b Other accrued liabilities

Equity

Equity	12 Months Ended
	Jan. 01, 2022
Equity [Abstract]
Equity	9. Equity Stock Repurchase Program On November 21, 2013, Intevac’s Board of Directors approved a stock repurchase program authorizing up to $30.0 million in repurchases. On August 15, 2018, Intevac’s Board of Directors approved a $10.0 million increase to the original stock repurchase program authorizing up to $40.0 million. Under this authorization, Intevac purchases shares of its common stock under a systematic stock repurchase program and may also make supplemental stock repurchases from time to time, depending on market conditions, stock price and other factors. At January 1, 2022, $10.4 million remains available for future stock repurchases under the repurchase program. The following table summarizes Intevac’s stock repurchases for fiscal 2021 and 2020: 2021 2020 (in thousands, except per share amounts) Shares of common stock repurchased — 98 Cost of stock repurchased $ — $ 393 Average price paid per share $ — $ 3.97 Intevac records treasury stock purchases under the cost method using the first-in, first-out paid-in paid-in

Income Taxes

Income Taxes	12 Months Ended
	Jan. 01, 2022
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes The provision for income taxes on income from operations for fiscal 2021 and 2020 consists of the following (in thousands): 2021 2020 Federal: Current $ — $ (915 ) Deferred — — — (915 ) State: Current 4 4 Deferred — — 4 4 Foreign: Current 546 1,705 Deferred 25 917 571 2,622 Total $ 575 $ 1,711 Income taxes on discontinued operations $ — $ — Income taxes on continuing operations $ 575 $ 1,711 Income (loss) before income taxes for fiscal 2021 and 2020 consisted of the following (in thousands): 2021 2020 U.S $ (22,694 ) $ (14,784 ) Foreign 212 6,060 $ (22,482 ) $ (8,724 ) Effective tax rate (2.6 %) (19.6 %) As a result of the adoption of ASU 2019-12 Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts for income tax purposes. Significant components of deferred tax assets are as follows (in thousands): January 1, January 2, Deferred tax assets: Vacation, warranty and other accruals $ 627 $ 651 Intangible amortization 282 551 Purchased technology 17 14 Inventory valuation 1,653 1,101 Equity-based compensation 1,343 1,494 Lease liability 1,659 — Net operating loss, research and other tax credit carryforwards 53,684 55,322 Other 22 30 59,287 59,163 Valuation allowance for deferred tax assets (52,703 ) (52,088 ) Total deferred tax assets 6,584 7,075 January 1, January 2, Deferred tax liabilities: Depreciation and amortization (201 ) (341 ) ROU asset (1,073 ) — Unbilled revenue — (1,399 ) Total deferred tax liabilities (1,274 ) (1,740 ) Net deferred tax assets $ 5,310 $ 5,335 As reported on the consolidated balance sheets: Non-current $ 5,310 $ 5,335 Intevac accounts for income taxes in accordance with ASC 740, Income Taxes Accounting standards also require that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some portion of or all of the deferred tax assets will not be realized. Management assesses the available positive and negative evidence to estimate if sufficient future taxable income will be generated to use the existing deferred tax assets. In fiscal 2014, a valuation allowance of $9.4 million was established to record the portion of the Singapore deferred tax assets that more likely than not will not be realized. The Company concluded that, as of December 29, 2018, it is more likely than not that the Company will generate sufficient taxable income in Singapore to realize its deferred tax assets and reversed the valuation allowance during the fourth quarter of 2018. This reversal resulted in the recognition of a non-cash In fiscal 2012, a valuation allowance of $23.4 million was established to record the portion of the U.S. federal deferred tax asset that more likely than not will not be realized. For fiscal 2021 a valuation allowance increase of $1.1 million and for fiscal 2020 a valuation allowance decrease of $416,000 were recorded for the U.S. federal deferred tax assets. A valuation allowance is recorded against the entire state deferred tax assets, which consists of state income tax temporary differences and deferred research and other tax credits that are not realizable in the foreseeable future. As of January 1, 2022, our federal, foreign and state net operating loss carryforwards for income tax purposes were approximately $29.4 million, $30.2 million and $70.2 million, respectively. The federal and state net operating loss carryforwards are subject to various limitations under Section 382 of the Internal Revenue Code and applicable state tax laws. If not utilized, the federal net operating loss carryforwards and the state net operating loss carryforwards will begin to expire in 2030 and 2028, respectively. The foreign net operating loss carryforwards do not expire. As of January 1, 2022, our federal and state tax credit carryforwards for income tax purposes were approximately $20.5 million and $16.0 million, respectively. If not utilized, the federal tax credit carryforwards will begin to expire in 2022 and the state tax credits carry forward indefinitely. We account for Global Intangible Low-Taxed The Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was enacted on March 27, 2020 in the United States. The CARES Act includes several significant provisions for corporations, including the usage of net operating losses and payroll benefits. Several foreign (non-U.S.) non-U.S. Under the CARES Act, we elected to defer payment, on an interest-free basis, of the employer portion of social security payroll taxes incurred from March 27, 2020 to December 31, 2020. One-half In Singapore, Intevac receives government assistance under the Job Support Scheme (“JSS”). The purpose of the JSS is to provide wage support to employers to help them retain their local employees. During fiscal 2021, the Company received $83,000 in JSS grants, of which $56,000 is reported as a reduction of cost of net revenues, $10,000 is reported as a reduction of R&D expenses and $17,000 is reported as a reduction of selling, general and administrative expenses on the consolidated statements of income. During fiscal 2020, the Company received $567,000 in JSS grants, of which $328,000 is reported as a reduction of cost of net revenues, $90,000 is reported as a reduction of R&D expenses and $149,000 is reported as a reduction of selling, general and administrative expenses on the consolidated statement of income. The difference between the tax provision at the statutory federal income tax rate and the tax provision for fiscal 2021 and 2020 on continuing operations was as follows (in thousands): 2021 2020 Income tax at the federal statutory rate $ (4,721 ) $ (1,832 ) State income taxes, net of federal benefit 4 4 Change in valuation allowance: U.S 94 40 Foreign — — Effect of foreign operations taxed at various rates 48 (235 ) Research tax credits (1,135 ) (1,306 ) Effect of tax rate changes, permanent differences and adjustments of prior deferrals 6,285 4,461 Unrecognized tax benefits — 579 Total income tax expense on continuing operations $ 575 $ 1,711 Intevac has not provided for foreign withholding taxes on approximately $1.6 million of undistributed earnings from non-U.S. The total amount of gross unrecognized tax benefits was $718,000 as of January 1, 2022, none of which would affect Intevac’s effective tax rate if realized. The aggregate changes in the balance of gross unrecognized tax benefits were as follows for fiscal 2021 and 2020 2021 2020 Beginning balance $ 7,327 $ 7,683 Additions based on tax positions related to the current year 24 589 Decreases for tax positions of prior years (6,622 ) — Lapse of statute of limitations (11 ) (945 ) Ending balance $ 718 $ 7,327 The Company does not anticipate any changes in the amount of unrecognized tax benefits in the next twelve months. It is Intevac’s policy to include interest and penalties related to unrecognized tax benefits in the provision for income taxes on the consolidated statements of operations. During fiscal 2021 and 2020, Intevac recognized a net tax expense (benefit) of $0 and ($2,000), respectively. As of January 1, 2022 Intevac did not have any accrued interest related to unrecognized tax benefits. Intevac did not accrue any penalties related to these unrecognized tax benefits because Intevac has other tax attributes which would offset any potential taxes due. Intevac is subject to income taxes in the U.S. federal jurisdiction, and various state and foreign jurisdictions. Tax regulations within each jurisdiction are subject to the interpretation of the related tax laws and regulations and require significant judgment to apply. As of January 1, 2022, all of the tax years remained open to examination by the federal and state taxing authorities, for three The Inland Revenue Authority of Singapore (“IRAS”) conducted a review of the fiscal 2009 through 2010 tax returns of the Company’s wholly-owned subsidiary, Intevac Asia Pte. Ltd. IRAS challenged the Company’s tax position with respect to certain deductions. The Company paid all contested taxes and the related interest to have the right to defend its position under Singapore tax law. During 2019, the Company received an unfavorable decision on its appeal to the Singapore Income Tax Board of Review. The Company appealed the decision to the Singapore High Court. In October 2020, the Company received an unfavorable decision on its appeal to the Singapore High Court. Management decided not to pursue additional appeals and the matter is fully settled. Presently, there are no other active income tax examinations in the jurisdictions where Intevac operates.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Jan. 01, 2022
Employee Benefit Plans	11. Employee Benefit Plans Employee Savings and Retirement Plan In 1991, Intevac established a defined contribution retirement plan with 401(k) plan features. The plan covers all United States employees eighteen years and older. Employees may make contributions by a percentage reduction in their salaries, not to exceed the statutorily prescribed annual limit. Intevac made cash contributions of $188,000 for fiscal 2021 and $201,000 for fiscal 2020. Employees may choose among several investment options for their contributions and their share of Intevac’s contributions, and they are able to move funds between investment options at any time. Intevac’s common stock is not one of the investment options. Administrative expenses relating to the plan are insignificant. Employee Bonus Plans Intevac has various employee bonus plans. A profit-sharing plan provides for the distribution of a percentage of pre-tax

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Jan. 01, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. Commitments and Contingencies Leases Intevac leases certain manufacturing facilities, warehouses, office space, and equipment under non-cancelable The Company and EOTECH have entered into a Lease Assignment Agreement that assigns a portion of the Company’s lease obligation regarding its Santa Clara, California campus to EOTECH. The Company is contingently liable should EOTECH default on future lease obligations through the lease termination date of March 2024. The aggregate amount of the future lease obligations under this arrangement is $3.4 million as of January 1, 2022. As the Company is not being released as the primary obligor under the original lease, the lease assignment has been accounted for as a sublease. In consideration of EOTECH’s assumption of the above-mentioned lease obligations, which assumed lease obligations pertain in part to excess space beyond that required for EOTECH’s currently anticipated operation of the Photonics business, the Company agreed to pay to EOTECH the amount of $2.1 million (the “Unused Space Amount”), which Unused Space Amount is payable in (i) one initial installment of $308,000 on January 10, 2022 and (ii) seven (7) equal quarterly installments of $259,000. The following table reflects our lease assets and our lease liabilities at January 1, 2022 and January 2, 2021. January 1, 2022 January 2, 2021 (in thousands) Assets: Operating lease ROU assets $ 4,520 $ 8,165 Liabilities: Current operating lease liabilities $ 3,119 $ 2,853 Noncurrent operating lease liabilities 3,675 6,803 $ 6,794 $ 9,656 Lease Costs: The components of lease costs were as follows: 2021 2020 (in thousands) Operating lease cost $ 2,944 $ 2,942 Short-term lease cost 98 93 Total lease cost $ 3,042 $ 3,035 As of January 1, 2022 the maturity of operating lease liabilities was as follows: Continuing Discontinued Total (in thousands) 2022 $ 1,805 $ 1,661 $ 3,466 2023 1,577 1,710 3,287 2024 256 286 542 Total lease payments $ 3,638 $ 3,657 7,295 Less: Interest (242 ) (259 ) (501 ) Present value of lease liabilities $ 3,396 $ 3,398 6,794 The operating lease liabilities in discontinued operations represent the lease obligations that were assigned to EOTECH but which will be accounted for as a sublease as the Company has not been relieved of its primary obligations with the landlord. Lease Term and Discount Rate: January 1, 2022 January 2, 2021 Weighted-average remaining lease term (in years) 2.11 3.09 Weighted-average discount rate 6.40 % 6.39 % Other information: Supplemental cash flow information related to leases was as follows (in thousands): 2021 2020 (in thousands) Operating cash outflows from operating leases $ 3,382 $ 3,332 ROU asset impairment expense (reported in discontinued operations) $ 1,246 $ — ROU assets obtained in exchange for new operating lease liabilities $ — $ 128 Guarantees Officer and Director Indemnifications As permitted or required under Delaware law and to the maximum extent allowable under that law, Intevac has certain obligations to indemnify its current and former officers and directors for certain events or occurrences while the officer or director is, or was, serving at Intevac’s request in such capacity. These indemnification obligations are valid as long as the director or officer acted in good faith and in a manner the person reasonably believed to be in, or not opposed to, the best interests of the Company and, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful. The maximum potential amount of future payments Intevac could be required to make under these indemnification obligations is unlimited; however, Intevac has a director and officer insurance policy that mitigates Intevac’s exposure and enables Intevac to recover a portion of any future amounts paid. As a result of Intevac’s insurance policy coverage, Intevac believes the estimated fair value of these indemnification obligations is not material. Other Indemnifications As is customary in Intevac’s industry, many of Intevac’s contracts provide remedies to certain third parties such as defense, settlement, or payment of judgments for intellectual property claims related to the use of its products. Such indemnification obligations may not be subject to maximum loss clauses. Historically, payments made related to these indemnifications have been immaterial. Letters of Credit As of January 1, 2022, we had letters of credit and bank guarantees outstanding totaling $786,000, including the standby letter of credit outstanding under the Santa Clara, California facility lease and various other guarantees with its bank. These letters of credit and bank guarantees are collateralized by $786,000 of restricted cash. Warranty Intevac provides for the estimated cost of warranty when revenue is recognized. Intevac’s warranty is subject to contract terms and, for its HDD manufacturing, DCP manufacturing, solar cell manufacturing and ASP manufacturing systems, the warranty typically ranges between 12 and 24 months from customer acceptance. During this warranty period any defective non-consumable On the consolidated balance sheets, the short-term portion of the warranty provision is included in other accrued liabilities, while the long-term portion is included in other long-term liabilities. The expense associated with product warranties issued or adjusted is included in cost of net revenues on the consolidated statements of income. The following table displays the activity in the warranty provision account for fiscal 2021 and 2020: 2021 2020 (in thousands) Beginning balance $ 480 $ 1,022 Expenditures incurred under warranties (622 ) (493 ) Expenditures incurred under warranties included in discontinued operations (89 ) (19 ) Accruals for product warranties 502 237 Accruals for product warranties included in discontinued operations 122 43 Adjustments to previously existing warranty accruals 31 (306 ) Adjustments to previously existing warranty accruals included in discontinued operations (31 ) (4 ) Sale of Photonics division (47 ) — Ending balance $ 346 $ 480 Legal Matters From time to time, Intevac receives notification from third parties, including customers and suppliers, seeking indemnification, litigation support, payment of money or other actions in connection with claims made against them. In addition, from time to time, Intevac receives notification from third parties claiming that Intevac may be or is infringing their intellectual property or other rights. Intevac also is subject to various other legal proceedings and claims, both asserted and unasserted, that arise in the ordinary course of business. Although the outcome of these claims and proceedings cannot be predicted with certainty, Intevac does not believe that any of these other existing proceedings or claims will have a material adverse effect on its consolidated financial condition or results of operations. In July 2020, Robin Quiusky, a former contract employee who worked for us via a staffing agency, filed an action against us under the Private Attorneys General Act (“PAGA”) in California state court (Quiusky v. Intevac, Inc., et al) alleging that the Company failed to provide rest and meal breaks, pay overtime and reimburse business expenses for non-exempt

Restructuring Charges

Restructuring Charges	12 Months Ended
	Jan. 02, 2021
Restructuring and Related Activities [Abstract]
Restructuring Charges	13. Restructuring Charges During the fourth quarter of fiscal 2021, the Company recorded asset impairment and restructuring charges associated with the sale of the Photonics division including (i) $693,000 in severance and other employee-related costs related to the termination of the Photonics general manager; (ii) $1.2 million in asset impairment charges on the Company’s ROU asset and (iii) $665,000 in accruals for common area charges associated with an unused space commitment to EOTECH. In consideration of EOTECH’s assumption of certain lease obligations related to the Company’s Santa Clara, California campus, which assumed lease obligations pertain in part to excess space beyond that required EOTECH’s currently anticipated operation of the Photonics division, the Company agreed to pay EOTECH the amount of $2.1 million, which is payable in (i) one initial installment of $308,000 on January 10, 2022 and (ii) seven equal quarterly installments of $259,000. The Company recorded an asset impairment charge against its ROU asset in the amount of $1.2 million associated with the excess space noted above. The Company recorded a liability to EOTECH in the amount of $665,000, the amount related to common area charges which are not included in the base rental payments or the lease liability on the Company’s consolidated balance sheet. During the third quarter of fiscal 2021, Intevac substantially completed implementation of the 2021 cost reduction plan (the “2021 Cost Reduction Plan”), which was intended to reduce expenses and reduce its workforce by 5.2 percent. The cost of implementing the 2021 Cost Reduction Plan was reported under cost of net revenues and operating expenses in the consolidated statements of income. Substantially all cash outlays in connection with the Cost Reduction Plan occurred in the first nine months of fiscal 2021. Implementation of the 2021 Cost Reduction Plan is expected to reduce salary, wages and other employee-related expenses by approximately $2.0 million on an annual basis. During the third quarter of fiscal 2020, Intevac substantially completed implementation of the 2020 cost reduction plan (the “2020 Cost Reduction Plan”), which was intended to reduce expenses and reduce its workforce by 1.0 percent. The cost of implementing the 2020 Cost Reduction Plan was reported under cost of net revenues and operating expenses in the consolidated statements of income. Substantially all cash outlays in connection with the 2020 Cost Reduction Plan occurred in the third quarter of fiscal 2020. Implementation of the 2020 Cost Reduction reduced salary, wages and other employee-related expenses by approximately $864,000 on an annual basis. As of January 1, 2022, activities related to the 2021 Plan and the 2020 Plan were complete. The following table summarizes the significant activities within, and components of, the restructuring liabilities. Employee Other Total (in thousands) Balance at December 28, 2019 $ — $ — $ — Provision for restructuring charges under the 2020 Cost Reduction Plan 103 — 103 Cash payments made (103 ) — (103 ) Balance at January 2, 2021 $ — $ — $ — Provision for restructuring charges under the 2021 Cost Reduction Plan 319 — 319 Cash payments made (319 ) — (319 ) Provision for restructuring charges associated with Photonics sale (a) 693 1,911 2,604 Cash payments made (96 ) — (96 ) Non-cash (239 )(b) (1,246 )(c) (1,485 ) Balance at January 1, 2022 $ 358 (d) $ 665 $ 1,023 (a) Included in income from discontinued operations (See note 2). (b) Acceleration of equity awards. (c) Impairment of ROU asset. (d) Liability for employee termination costs is included in accrued payroll and related liabilities.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jan. 01, 2022
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation The consolidated financial statements include the accounts of Intevac, Inc. and its subsidiaries (Intevac, the Company or we) after elimination of inter-company balances and transactions. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates.
Fiscal Year End Date	Fiscal Year End Date Intevac operates under a 52-53
Reportable Segment	Reportable Segment During fiscal 2021, we sold the business of one of our reporting segments, Photonics. Therefore, we have one reportable segment remaining. See Note 2 for additional disclosure related to discontinued operations. The remaining segment, Thin Film Equipment (“TFE”) segment, designs, develops and markets vacuum process equipment solutions for high-volume manufacturing of small substrates with precise thin-film properties, such as for the hard drive, solar cell, display cover panel (“DCP”) and advanced semiconductor packaging (“ASP”) industries, as well as other adjacent thin-film markets.
Reclassification of Prior Periods	Reclassification of Prior Periods On December 30, 2021, the Company completed the sale of its Photonics business to EOTECH, LLC, a Michigan limited liability company (“EOTECH”), in exchange for (i) $70.0 million in cash consideration (as may be increased or decreased by certain closing net working capital adjustments), (ii) up to $30.0 million in earnout payments and (iii) the assumption by EOTECH of certain liabilities of the Photonics business. Due to the sale of the Photonics business during the fourth quarter of 2021, we have classified the results of the Photonics business as discontinued operations in our consolidated statements of income for all periods presented. All amounts included in the Notes to Consolidated Financial Statements relate to continuing operations unless otherwise noted.
Cash, Cash Equivalents and Investments	Cash, Cash Equivalents and Investments Intevac considers all highly liquid investments with original maturities of three months or less when purchased to be cash equivalents. Available-for-sale available-for-sale
Restricted Cash	Restricted Cash Restricted cash of $600,000 as of January 1, 2022 secures a standby letter of credit obligation associated with a lease obligation and the restriction on the cash will be removed when the letter of credit expires. In addition, Intevac pledged $186,000 as collateral for various guarantees with its bank.
Derivative Instruments and Hedging Arrangements	Derivative Instruments and Hedging Arrangements Foreign Exchange Exposure Management re-measurement non-functional
Fair Value Measurement-Definition and Hierarchy	Fair Value Measurement—Definition and Hierarchy Intevac reports certain financial assets and liabilities at fair value. Intevac defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements are classified and disclosed in one of the following three categories: Level 1 Level 2 Level 3
Trade Accounts Receivables and Doubtful Accounts	Trade Accounts Receivables and Doubtful Accounts Intevac evaluates the collectibility of trade accounts receivable on an ongoing basis and provides reserves against potential losses when appropriate. Management analyzes historical bad debts, customer concentrations, customer creditworthiness, changes in customer payment tendencies and current economic trends when evaluating the adequacy of the allowance for doubtful accounts. Customer accounts are written off against the allowance when the amount is deemed uncollectible.
Inventories	Inventories Inventories are generally stated at the lower of cost or net realizable value, with cost determined on an average cost basis.
Property, Plant and Equipment	Property, Plant and Equipment Equipment and leasehold improvements are stated at cost. Depreciation is computed using the straight-line method over the estimated useful lives of the assets as follows: computers and software, 3 years; machinery and equipment, 5 years; furniture, 7 years; vehicles, 4 years; and leasehold improvements, remaining lease term.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Long-lived assets and certain identifiable finite-lived intangible assets to be held and used are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Determination of recoverability of long-lived assets is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition. Measurement of an impairment loss for long-lived assets and certain identifiable intangible assets that management expects to hold and use is based on the fair value of the asset. When an impairment loss is recognized, the carrying amount of the asset is reduced to its estimated fair value.
Income Taxes	Income Taxes Intevac accounts for income taxes by recognizing deferred tax assets and liabilities using enacted tax rates for the effect of temporary differences between the book and tax bases of recorded assets and liabilities. Deferred tax assets and liabilities are recognized using enacted tax rates for the effect of temporary differences between book and tax bases of recorded assets and liabilities. Deferred tax assets are reduced by a valuation allowance if it is more likely than not that a portion of the deferred tax asset will not be realized. In determining whether to establish or maintain a valuation allowance against a deferred tax asset, the Company reviews available evidence to determine whether it is more likely than not that all or a portion of the Company’s net deferred tax assets will be realized in future periods. Consideration is given to various positive and negative factors that could affect the realization of the net deferred tax assets. In making such a determination, the Company considers, among other things, future reversals of existing taxable temporary differences, projected future taxable income, tax-planning The effective tax rate is highly dependent upon the level of Intevac’s projected earnings, the geographic composition of worldwide earnings, tax regulations governing each region, net operating loss carryforwards, availability of tax credits and the effectiveness of Intevac’s tax planning strategies. Intevac carefully monitors the changes in many factors and adjust its effective income tax rate on a timely basis. If actual results differ from the estimates, this could have a material effect on Intevac’s business, financial condition and results of operations. The calculation of tax liabilities involves significant judgment in estimating the impact of uncertainties in the application of complex tax laws. Resolution of these uncertainties in a manner inconsistent with Intevac’s expectations could have a material effect on Intevac’s business, financial condition and results of operations. Intevac recognizes accrued interest and penalties related to unrecognized tax benefits in the provision for income taxes.
Sales and Value Added Taxes	Sales and Value Added Taxes Taxes collected from customers and remitted to governmental authorities are presented on a net basis in the accompanying consolidated statements of income.
Revenue Recognition	Revenue Recognition A majority of our equipment sales revenue, which includes systems, technology upgrades, service and spare parts is recognized when products are shipped from our manufacturing facilities. We recognize revenue for equipment sales at a point in time following the transfer of control of such products to the customer, which typically occurs upon shipment or delivery depending on the terms of the underlying contracts. Intevac recognizes revenue in certain circumstances before delivery has occurred (commonly referred to as bill and hold transactions). In such circumstances, among other things, risk of ownership has passed to the customer, the customer has made a written fixed commitment to purchase the finished goods, the customer has requested the finished goods be held for future delivery as scheduled and designated by them, and no additional performance obligations exist by Intevac. For these transactions, the finished goods are segregated from inventory and normal billing and credit terms granted. Our contracts with customers may include multiple performance obligations. For such arrangements, under the revenue standard we allocate revenue to each performance obligation based on its relative standalone selling price. We generally determine standalone selling prices based on the prices charged to customers or by using expected cost plus margin. Under the revenue standard, the expected costs associated with our base warranties are recognized as expense when the equipment is sold.
Government Grants And Credits	Government Grants and Credits The Company generally records grants from governmental agencies related to income as a reduction in operating expense. Grants are recognized when there is reasonable assurance that the Company will comply with the conditions attached to the grant arrangement and the grant will be received. Reimbursements of eligible expenditures pursuant to government assistance programs are recorded as reductions of operating costs when the related costs have been incurred and there is reasonable assurance regarding collection of the claim. Grant claims not settled by the balance sheet date are recorded as receivables, provided their receipt is reasonably assured. The determination
Advertising Costs	Advertising Costs Advertising costs are expensed as incurred. Advertising costs were not material for all periods presented.
Foreign Currency Translation	Foreign Currency Translation The functional currency of Intevac’s foreign subsidiaries in Singapore and Hong Kong and the Taiwan branch is the U.S. dollar. The functional currency of Intevac’s foreign subsidiaries in China, Malaysia and Korea is the local currency of the country in which the respective subsidiary operates. Assets and liabilities recorded in foreign currencies are translated at year-end
Comprehensive Income	Comprehensive Income (Loss) The changes in accumulated other comprehensive income (loss) by component, were as follows for the years ended January 1, 2022 and January 2, 2021: Foreign Unrealized holding available-for-sale Total (in thousands) Balance at December 28, 2019 $ 381 $ 43 $ 424 Other comprehensive income (loss) before reclassification 221 (5 ) 216 Amounts reclassified from other comprehensive income (loss) — — — Net current-period other comprehensive income (loss) 221 (5 ) 216 Balance at January 2, 2021 602 38 640 Other comprehensive income (loss) before reclassification 6 (68 ) (62 ) Amounts reclassified from other comprehensive income (loss) — — — Net current-period other comprehensive income (loss) 6 (68 ) (62 ) Balance at January 1, 2022 $ 608 $ (30 ) $ 578
Employee Stock Plans	Employee Stock Plans Intevac has equity-based compensation plans that provide for the grant to employees of equity-based awards, including incentive or non-statutory non-statutory non-employee
Recent Accounting Pronouncements Not Yet Adopted	Recent Accounting Pronouncements Not Yet Adopted In November 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2021-10, Disclosures by Business Entities about Government Assistance In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848) 2021-01, Reference Rate Reform (Topic 848): Scope 2020-04 2020-04. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326).

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Jan. 01, 2022
Changes in Accumulated Other Comprehensive Income by Component	The changes in accumulated other comprehensive income (loss) by component, were as follows for the years ended January 1, 2022 and January 2, 2021: Foreign Unrealized holding available-for-sale Total (in thousands) Balance at December 28, 2019 $ 381 $ 43 $ 424 Other comprehensive income (loss) before reclassification 221 (5 ) 216 Amounts reclassified from other comprehensive income (loss) — — — Net current-period other comprehensive income (loss) 221 (5 ) 216 Balance at January 2, 2021 602 38 640 Other comprehensive income (loss) before reclassification 6 (68 ) (62 ) Amounts reclassified from other comprehensive income (loss) — — — Net current-period other comprehensive income (loss) 6 (68 ) (62 ) Balance at January 1, 2022 $ 608 $ (30 ) $ 578

Divestiture and Discontinued _2

Divestiture and Discontinued Operations (Tables)	12 Months Ended
	Jan. 01, 2022
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract]
Summary of gain on sale of photonics segment	The following table summarizes the components of the gain on sale of the Photonics segment (in thousands): Cash proceeds $ 70,000 Working capital adjustment (74 ) 69,926 Assets sold: Accounts receivable 3,535 Inventories 6,301 Other current assets 72 Property, plant and equipment 3,987 Total assets sold 13,895 Liabilities divested: Accounts payable 888 Other accrued expenses 594 Total liabilities divested 1,482 Transaction and other costs (3,172 ) Gain on sale $ 54,341
Summary of components discontinued operations related photonics segment	The key components from discontinued operations related to the Photonics segment are as follows (in thousands): Year Ended, January 1, January 2, (In thousands, except per share amounts) Net revenues: Systems and components $ 15,932 $ 22,751 Technology development 11,735 22,945 Total net revenues 27,667 45,696 Cost of net revenues: Systems and components 12,252 12,520 Technology development 8,885 15,048 Total cost of net revenues 21,137 27,568 Gross profit 6,530 18,128 Year Ended, January 1, January 2, (In thousands, except per share amounts) Operating expenses: Research and development 2,653 888 Selling, general and administrative 5,937 5,805 Asset impairment and restructuring charges 2,604 — Total operating expenses 11,194 6,693 Operating income (loss)—discontinued operations (4,664 ) 11,435 Other income (expense)—discontinued operations — 56 Income (loss) discontinued operations before provision for (benefit from) income taxes (4,664 ) 11,491 Gain on disposal of discontinued operations before income taxes 54,341 — Total income from discontinued operations, before tax 49,677 11,491 Provision for (benefit from) income taxes — — Net income from discontinued operations net of tax $ 49,677 $ 11,491
Summary of cash flow and noncash information related to discontinued operations	The following table presents cash flow and non-cash 2021 2020 (in thousands) Depreciation and amortization $ 1,366 $ 1,123 Amortization of intangible assets $ — $ 36 Asset impairment charges $ 1,246 $ — Equity-based compensation $ 1,167 $ 959 Purchase of leasehold improvements and equipment $ 429 $ 636

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Jan. 01, 2022
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue from Contracts with Customers	The following tables represent a disaggregation of revenue from contracts with customers for fiscal 2021 and 2020. Major Products and Service Lines 2021 2020 (in thousands) HDD DCP PV ASP Total HDD PV Total Systems, upgrades and spare parts $ 28,300 $ 3 $ 258 $ 3,850 $ 32,411 $ 45,620 $ 426 $ 46,046 Field service 6,031 14 68 — 6,113 6,080 2 6,082 Total TFE net revenues $ 34,331 $ 17 $ 326 $ 3,850 $ 38,524 $ 51,700 $ 428 $ 52,128 Primary Geography Markets 2021 2020 (in thousands) United States $ 3,670 $ 6,450 Asia 31,004 45,611 Europe 3,850 67 Total net revenues $ 38,524 $ 52,128 Timing of Revenue Recognition 2021 2020 (in thousands) Products transferred at a point in time $38,524 $52,128 Products and services transferred over time — — Total net revenues $ 38,524 $ 52,128
Changes in Contract Assets and Contract Liabilities	The following table reflects the changes in our contract assets, which we classify as accounts receivable, unbilled or retainage and our contract liabilities which we classify as deferred revenue and customer advances for fiscal 2020: January 1, January 2, Change (In thousands) TFE: Contract assets: Accounts receivable, unbilled $ 99 $ 369 $ (270 ) Contract liabilities: Deferred revenue $ 65 $ 482 $ (417 ) Customer advances 2,107 33 2,074 $ 2,172 $ 515 $ 1,657 Photonics (included in discontinued operations): Contract assets: Accounts receivable, unbilled $ — $ 5,439 $ (5,439 ) Retainage — 126 (126 ) $ — $ 5,565 $ (5,565 ) Contract liabilities: Deferred revenue $ — $ 779 $ (779 )

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	12 Months Ended
	Jan. 01, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of Recording Equity-Based Compensation	The effect of recording equity-based compensation for fiscal 2021 and 2020 was as follows (in thousands): 2021 2020 Equity-based compensation by type of award: Stock options $198 $504 RSUs 2,819 1,936 Employee stock purchase plan 986 949 Total equity-based compensation * $ 4,003 $ 3,389
Summary of Stock Option Activity	A summary of the stock option activity is as follows: Shares Weighted Exercise Weighted Average Aggregate Intrinsic Value Options outstanding at January 2, 2021 1,814,467 $ 6.66 3.08 $ 2,520,722 Options cancelled and forfeited (280,261 ) $ 7.44 Options exercised (76,619 ) $ 5.74 Options outstanding at January 1, 2022 1,457,587 $ 6.55 2.31 $ 7,622 Options exercisable at January 1, 2022 1,267,664 $ 6.74 2.08 $ 3,513
Employee Stock Options Weighted-Average Assumptions	The weighted-average assumptions used in the model are outlined in the following table: 2021 2020 Stock Options: Weighted-average fair value of grants per share — $ 1.82 Expected volatility — 46.06 % Risk free interest rate — 0.44% Expected term of options (in years) — 4.39 Dividend yield — None
Summary of Restricted Stock Units Activity	A summary of the RSU activity is as follows: Shares Weighted Weighted Average Aggregate Non-vested 901,634 $ 5.30 1.50 $ 6,500,781 Granted 606,705 $ 6.03 Vested (382,747 ) $ 5.71 Cancelled (92,156 ) $ 4.79 Non-vested 1,033,436 $ 5.59 1.39 $ 4,867,484
Employee Stock Purchase Rights Weighted-Average Assumptions	The fair value of the employee stock purchase right is estimated on the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions: 2021 2020 Stock Purchase Rights: Weighted-average fair value of grants per share $ 2.59 $ 2.20 Expected volatility 60.88 % 51.49 % Risk free interest rate 0.08 % 0.14 % Expected term of purchase rights (in years) 0.91 1.24 Dividend yield None None
Employee Stock Purchase Plan Activity	The ESPP activity during fiscal 2021 and 2020 is as follows: 2021 2020 (in thousands, except per share amounts) Shares purchased 435 392 Weighted-average purchase price per share $ 5.05 $ 4.01 Aggregate intrinsic value of purchase rights exercised $ 671 $ 765 As of January 1, 2022, Intevac had $215,000 of total unrecognized compensation expense related to purchase rights that will be recognized over the weighted-average period of 0.5 years.
Performance Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Options Weighted-Average Assumptions	Intevac estimated the weighted-average fair value of PRSUs using the following weighted-average assumptions: 2021 Weighted-average fair value of grants per share $ 7.65 Expected volatility 56.26 % Risk-free interest rate 0.15 % Dividend yield None Intevac estimated the weighted-average fair value of PRSUs using the following weighted-average assumptions: 2020 Weighted-average fair value of grants per share $ 3.16 Expected volatility 46.7 % Risk-free interest rate 0.25 % Dividend yield None

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Jan. 01, 2022
Text Block [Abstract]
Computation of Basic and Diluted Net Income Per Share	The following table sets forth the computation of basic and diluted net income (loss) per share: 2021 2020 (in thousands, except per share amounts) Net loss from continuing operations $ (23,057 ) $ (10,435 ) Net income from discontinued operations, net of tax 49,677 11,491 Net income $ 26,620 $ 1,056 Weighted-average shares – basic 24,348 23,669 Effect of dilutive potential common shares — — Weighted-average shares – diluted 24,348 23,669 Basic and diluted net income (loss) per share: Continuing operations $ (0.95 ) $ (0.44 ) Discontinued operations $ 2.04 $ 0.49 Net income per share $ 1.09 $ 0.04

Concentrations (Tables)

Concentrations (Tables)	12 Months Ended
	Jan. 01, 2022
Accounts Receivable
Customers that Accounted for at Least Ten percent of Accounts Receivable/Consolidated Net Revenues	Intevac’s accounts receivable tend to be concentrated in a limited number of customers. The following customers accounted for at least 10 percent of Intevac’s accounts receivable at January 1, 2022 and January 2, 2021. 2021 2020 Seagate Technology 47 % 45 % Western Digital Corporation 30 % 16 % Amkor Technology, Inc. 22 % * U.S. Government (included in discontinued operations). — 26 % * Less than 10%
Sales Revenue Net
Customers that Accounted for at Least Ten percent of Accounts Receivable/Consolidated Net Revenues	The following customers accounted for at least 10 percent of Intevac’s consolidated net revenues in fiscal 2021 and/or 2020. 2021 2020 Seagate Technology 60 % 79 % Western Digital Corporation 25 % 18 % Amkor Technology, Inc. 10 % * * Less than 10%

Balance Sheet Details (Tables)

Balance Sheet Details (Tables)	12 Months Ended
	Jan. 01, 2022
Trade and Other Accounts Receivable, Net	Trade and Other Accounts Receivable, Net January 1, January 2, (in thousands) Trade receivables and other $ 14,162 $ 22,712 Unbilled costs and accrued profits 99 5,934 Less: allowance for doubtful accounts — — $ 14,261 $ 28,646
Summary of Inventories	Inventories are stated at the lower of average cost or net realizable value and consist of the following: January 1, January 2, (in thousands) Raw materials $ 5,323 $ 9,999 Work-in-progress 468 4,832 Finished goods — 6,858 $ 5,791 $ 21,689
Property, Plant and Equipment	Property, Plant and Equipment, Net January 1, January 2, (in thousands) Leasehold improvements $ 9,847 $ 16,323 Machinery and equipment 23,818 46,846 33,665 63,169 Less accumulated depreciation and amortization 28,906 52,165 Total property, plant and equipment, net $ 4,759 $ 11,004
Net Property, Plant And Equipment By Geographic Region	Net property, plant and equipment by geographic region at January 1, 2022 and January 2, 2021 was as follows: January 1, January 2, (in thousands) United States $ 4,385 $ 10,678 Asia 374 326 Net property, plant & equipment $ 4,759 $ 11,004
Deferred Income Taxes and Other Long-Term Assets	Deferred Income Taxes and Other Long-Term Assets January 1, January 2, (in thousands) Deferred income taxes $ 5,310 $ 5,335 Prepaid expenses 139 151 $ 5,449 $ 5,486
Other Accrued Liabilities	Other Accrued Liabilities January 1, January 2, (in thousands) Other taxes payable $ 1,318 $ 935 Litigation settlement 1,000 — Income taxes payable 370 263 Restructuring 347 — Accrued product warranties 301 405 Other 264 734 Deferred revenue 65 1,261 Total other accrued liabilities $ 3,665 $ 3,598
Other Long-Term Liabilities	Other Long-Term Liabilities January 1, January 2, (in thousands) Restructuring $ 318 $ — Accrued product warranties 45 75 Employer payroll taxes — 382 Total other long-term liabilities $ 363 $ 457

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Jan. 01, 2022
Cash Flow Hedges Derivative Instruments at Fair Value, Net [Abstract]
Cash, Cash Equivalents and Short-Term Investments and Long-Term Investments	Cash and cash equivalents, short-term investments and long-term investments consist of: January 1, 2022 Amortized Unrealized Unrealized Fair Value (in thousands) Cash and cash equivalents: Cash $ 102,494 $ — $ — $ 102,494 Money market funds 234 — — 234 Total cash and cash equivalents $ 102,728 $ — $ — $ 102,728 Short-term investments: Certificates of deposit $ 4,300 $ — $ — $ 4,300 Commercial paper 400 — — 400 Corporate bonds and medium-term notes 2,916 — 3 2,913 Municipal bonds 700 — — 700 U.S. treasury securities 1,910 — 2 1,908 Total short-term investments $ 10,226 $ — $ 5 $ 10,221 Long-term investments: Asset backed securities $ 2,040 $ — $ 3 $ 2,037 Certificates of deposit 500 — 3 497 Corporate bonds and medium-term notes 1,521 — 6 1,515 Municipal bonds 145 — 1 144 U.S. treasury securities 3,246 — 12 3,234 Total long-term investments $ 7,452 $ — $ 25 $ 7,427 Total cash, cash equivalents, and investments $ 120,406 $ — $ 30 $ 120,376 January 2, 2021 Amortized Unrealized Unrealized Fair (in thousands) Cash and cash equivalents: Cash $ 24,729 $ — $ — $ 24,729 Money market funds 3,612 — — 3,612 Certificates of deposit 1,000 — — 1,000 Total cash and cash equivalents $ 29,341 $ — $ — $ 29,341 Short-term investments: Certificates of deposit $ 6,450 $ 2 $ — $ 6,452 Commercial paper 500 — — 500 Corporate bonds and medium-term notes 2,929 6 — 2,935 Municipal bonds 400 — — 400 U.S. treasury securities 4,527 25 — 4,552 Total short-term investments $ 14,806 $ 33 $ — $ 14,839 Long-term investments: Certificates of deposit $ 500 $ — $ — $ 500 Corporate bonds and medium-term notes 3,474 4 — 3,478 U.S. treasury securities 1,409 1 — 1,410 Total long-term investments $ 5,383 $ 5 $ — $ 5,388 Total cash, cash equivalents, and investments $ 49,530 $ 38 $ — $ 49,568
Contractual Maturities of Available-for-Sale Securities	The contractual maturities of investment securities at January 1, 2022 are presented in the following table. Amortized Cost Fair Value (in thousands) Due in one year or less $ 10,460 $ 10,455 Due after one through five years 7,452 7,427 $ 17,912 $ 17,882
Fair Market Value of Investments with Unrealized Losses Not Deemed to be Other-Than Temporarily Impaired	The following table provides the fair market value of Intevac’s investments with unrealized losses that are not deemed to be other-than temporarily impaired as of January 1, 2022. January 1, 2022 In Loss Position for Less than 12 Months In Loss Position for Greater than 12 Months Fair Value Gross Unrealized Fair Value Gross Unrealized (In thousands) Asset backed securities $ 2,037 $ 3 $ — $ — Certificates of deposit 1,497 3 — — Corporate bonds and medium-term notes 3,424 9 — — Municipal bond 464 1 — — U.S. treasury securities 4,642 14 — — $ 12,064 $ 30 $ — $ —
Fair Value Hierarchy of Available-for-Sale Securities Measured at Fair Value on Recurring Basis	The following table represents the fair value hierarchy of Intevac’s investment securities measured at fair value on a recurring basis as of January 1, 2022. Fair Value Measurements at January 1, 2022 Total Level 1 Level 2 (in thousands) Recurring fair value measurements: Money market funds $ 234 $ 234 $ — U.S. treasury securities 5,142 5,142 — Asset backed securities 2,037 — 2,037 Certificates of deposit 4,797 — 4,797 Commercial paper 400 — 400 Corporate bonds and medium-term notes 4,428 — 4,428 Municipal bonds 844 — 844 Total recurring fair value measurements $ 17,882 $ 5,376 $ 12,506
Summary of Outstanding Derivative Instruments on Gross Basis as Recorded in Consolidated Balance Sheets	The following table summarizes the Company’s outstanding derivative instruments on a gross basis as recorded in its consolidated balance sheets as of January 1, 2022 and January 2, 2021: Notional Amounts Derivative Derivative Liabilities Derivative Instrument January 1, January 2, January 1, January 2, Balance Sheet Line Fair Value Balance Sheet Line Fair Value (in thousands) Undesignated Hedges: Forward Foreign Currency Contracts $ 815 983 a $ 1 b $ 3 Total Hedges $ 815 983 $ 1 $ 3 a Other current assets b Other accrued liabilities

Equity (Tables)

Equity (Tables)	12 Months Ended
	Jan. 01, 2022
Equity [Abstract]
Schedule of Stock Repurchases	The following table summarizes Intevac’s stock repurchases for fiscal 2021 and 2020: 2021 2020 (in thousands, except per share amounts) Shares of common stock repurchased — 98 Cost of stock repurchased $ — $ 393 Average price paid per share $ — $ 3.97

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Jan. 01, 2022
Provision for Income Taxes	The provision for income taxes on income from operations for fiscal 2021 and 2020 consists of the following (in thousands): 2021 2020 Federal: Current $ — $ (915 ) Deferred — — — (915 ) State: Current 4 4 Deferred — — 4 4 Foreign: Current 546 1,705 Deferred 25 917 571 2,622 Total $ 575 $ 1,711 Income taxes on discontinued operations $ — $ — Income taxes on continuing operations $ 575 $ 1,711
Income (Loss) Before Income Taxes	Income (loss) before income taxes for fiscal 2021 and 2020 consisted of the following (in thousands): 2021 2020 U.S $ (22,694 ) $ (14,784 ) Foreign 212 6,060 $ (22,482 ) $ (8,724 ) Effective tax rate (2.6 %) (19.6 %)
Significant Components of Deferred Tax Assets	Significant components of deferred tax assets are as follows (in thousands): January 1, January 2, Deferred tax assets: Vacation, warranty and other accruals $ 627 $ 651 Intangible amortization 282 551 Purchased technology 17 14 Inventory valuation 1,653 1,101 Equity-based compensation 1,343 1,494 Lease liability 1,659 — Net operating loss, research and other tax credit carryforwards 53,684 55,322 Other 22 30 59,287 59,163 Valuation allowance for deferred tax assets (52,703 ) (52,088 ) Total deferred tax assets 6,584 7,075 January 1, January 2, Deferred tax liabilities: Depreciation and amortization (201 ) (341 ) ROU asset (1,073 ) — Unbilled revenue — (1,399 ) Total deferred tax liabilities (1,274 ) (1,740 ) Net deferred tax assets $ 5,310 $ 5,335 As reported on the consolidated balance sheets: Non-current $ 5,310 $ 5,335
Difference Between Tax Provision at Statutory Federal Income Tax Rate and Tax Provision	The difference between the tax provision at the statutory federal income tax rate and the tax provision for fiscal 2021 and 2020 on continuing operations was as follows (in thousands): 2021 2020 Income tax at the federal statutory rate $ (4,721 ) $ (1,832 ) State income taxes, net of federal benefit 4 4 Change in valuation allowance: U.S 94 40 Foreign — — Effect of foreign operations taxed at various rates 48 (235 ) Research tax credits (1,135 ) (1,306 ) Effect of tax rate changes, permanent differences and adjustments of prior deferrals 6,285 4,461 Unrecognized tax benefits — 579 Total income tax expense on continuing operations $ 575 $ 1,711
Aggregate Changes in Balance of Gross Unrecognized Tax Benefits	The aggregate changes in the balance of gross unrecognized tax benefits were as follows for fiscal 2021 and 2020 2021 2020 Beginning balance $ 7,327 $ 7,683 Additions based on tax positions related to the current year 24 589 Decreases for tax positions of prior years (6,622 ) — Lapse of statute of limitations (11 ) (945 ) Ending balance $ 718 $ 7,327

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Jan. 01, 2022
Commitments and Contingencies Disclosure [Abstract]
Schedule of Lease Assets and Lease Liabilities	The following table reflects our lease assets and our lease liabilities at January 1, 2022 and January 2, 2021. January 1, 2022 January 2, 2021 (in thousands) Assets: Operating lease ROU assets $ 4,520 $ 8,165 Liabilities: Current operating lease liabilities $ 3,119 $ 2,853 Noncurrent operating lease liabilities 3,675 6,803 $ 6,794 $ 9,656
Lease Costs	The components of lease costs were as follows: 2021 2020 (in thousands) Operating lease cost $ 2,944 $ 2,942 Short-term lease cost 98 93 Total lease cost $ 3,042 $ 3,035
Schedule of Maturity of Operating Lease Liabilities	As of January 1, 2022 the maturity of operating lease liabilities was as follows: Continuing Discontinued Total (in thousands) 2022 $ 1,805 $ 1,661 $ 3,466 2023 1,577 1,710 3,287 2024 256 286 542 Total lease payments $ 3,638 $ 3,657 7,295 Less: Interest (242 ) (259 ) (501 ) Present value of lease liabilities $ 3,396 $ 3,398 6,794
Schedule of Lease Term and Discount Rate	January 1, 2022 January 2, 2021 Weighted-average remaining lease term (in years) 2.11 3.09 Weighted-average discount rate 6.40 % 6.39 %
Schedule of Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows (in thousands): 2021 2020 (in thousands) Operating cash outflows from operating leases $ 3,382 $ 3,332 ROU asset impairment expense (reported in discontinued operations) $ 1,246 $ — ROU assets obtained in exchange for new operating lease liabilities $ — $ 128
Schedule of Product Warranty Liability	The following table displays the activity in the warranty provision account for fiscal 2021 and 2020: 2021 2020 (in thousands) Beginning balance $ 480 $ 1,022 Expenditures incurred under warranties (622 ) (493 ) Expenditures incurred under warranties included in discontinued operations (89 ) (19 ) Accruals for product warranties 502 237 Accruals for product warranties included in discontinued operations 122 43 Adjustments to previously existing warranty accruals 31 (306 ) Adjustments to previously existing warranty accruals included in discontinued operations (31 ) (4 ) Sale of Photonics division (47 ) — Ending balance $ 346 $ 480

Restructuring Charges (Tables)

Restructuring Charges (Tables)	12 Months Ended
	Jan. 01, 2022
Restructuring and Related Activities [Abstract]
Changes in Restructuring Reserves	The following table summarizes the significant activities within, and components of, the restructuring liabilities. Employee Other Total (in thousands) Balance at December 28, 2019 $ — $ — $ — Provision for restructuring charges under the 2020 Cost Reduction Plan 103 — 103 Cash payments made (103 ) — (103 ) Balance at January 2, 2021 $ — $ — $ — Provision for restructuring charges under the 2021 Cost Reduction Plan 319 — 319 Cash payments made (319 ) — (319 ) Provision for restructuring charges associated with Photonics sale (a) 693 1,911 2,604 Cash payments made (96 ) — (96 ) Non-cash (239 )(b) (1,246 )(c) (1,485 ) Balance at January 1, 2022 $ 358 (d) $ 665 $ 1,023 (a) Included in income from discontinued operations (See note 2). (b) Acceleration of equity awards. (c) Impairment of ROU asset. (d) Liability for employee termination costs is included in accrued payroll and related liabilities.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021	Dec. 31, 2024	Dec. 30, 2021
Summary Of Significant Accounting Policies [Line Items]
Restricted cash	$ 787,000	$ 786,000	$ 787,000
Net income (losses) from foreign currency transactions	(139,000)	(65,000)
Proceeds From Government Grants	567,000,000	83,000	567,000
Cost of Sales [Member] | Grant [Member]
Summary Of Significant Accounting Policies [Line Items]
Proceeds From Government Grants	328,000,000	56,000	328,000
Research and Development Expense [Member] | Grant [Member]
Summary Of Significant Accounting Policies [Line Items]
Proceeds From Government Grants	90,000,000	10,000	90,000
Selling, General and Administrative Expenses [Member] | Grant [Member]
Summary Of Significant Accounting Policies [Line Items]
Proceeds From Government Grants	$ 149,000,000	$ 17,000	$ 149,000
Computers and Software
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of asset		3 years
Machinery and Equipment
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of asset		5 years
Furniture and Fixtures
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of asset		7 years
Vehicles
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of asset		4 years
Leasehold Improvements
Summary Of Significant Accounting Policies [Line Items]
Lease and leasehold improvements estimated useful lives		remaining lease term
Pledged as Collateral for Standby Letter of Credit
Summary Of Significant Accounting Policies [Line Items]
Restricted cash		$ 600,000
Collateral for Various Guarantees
Summary Of Significant Accounting Policies [Line Items]
Restricted cash		186,000
EOTECH LLC [Member] | Photonics [Member]
Summary Of Significant Accounting Policies [Line Items]
Cash consideration					$ 70,000,000
Earnout payment		$ 30,000,000		$ 14,000,000	$ 30,000,000

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Changes in Accumulated Other Comprehensive Income by Component (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		$ 101,556	$ 95,793
Other comprehensive income (loss) before reclassification	$ 216	(62)
Other comprehensive income (loss), net of tax	216	(62)	216
Ending balance	101,556	134,015	101,556
Foreign currency
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	381	602
Other comprehensive income (loss) before reclassification	221	6
Other comprehensive income (loss), net of tax	221	6
Ending balance	602	608	602
Unrealized holding gains (losses) on available- for-sale investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	43	38
Other comprehensive income (loss) before reclassification	(5)	(68)
Other comprehensive income (loss), net of tax	(5)	(68)
Ending balance	38	(30)	38
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	424	640	424
Ending balance	$ 640	$ 578	$ 640

Divestiture and Discontinued _3

Divestiture and Discontinued Operations - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 31, 2024	Dec. 30, 2021
Impairment loss	$ 1,200	$ 128
EOTECH LLC [Member] | Photonics
Cash				$ 70,000
Earnout payment	$ 30,000		$ 14,000	$ 30,000

Divestiture and Discontinued _4

Divestiture and Discontinued Operations - Summary of Photonics Segment (Detail) - Photonics $ in Thousands	Jan. 01, 2022USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds	$ 70,000
Working capital adjustment	(74)
Disposal Group Including Discontinued Operations Net Cash Proceeds	69,926
Assets sold:
Accounts receivable	3,535
Inventories	6,301
Other current assets	72
Property, plant and equipment	3,987
Total assets sold	13,895
Liabilities divested:
Accounts payable	888
Other accrued expenses	594
Total liabilities divested	1,482
Transaction and other costs	(3,172)
Gain on sale	$ 54,341

Divestiture and Discontinued _5

Divestiture and Discontinued Operations - Summary of Components Discontinued Operations Related to Photonics Segment (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Operating expenses:
Income (loss) discontinued operations before provision for (benefit from) income taxes	$ (8,724)	$ (22,482)	$ (8,724)
Provision for income taxes	1,711	575	1,711
Net income from discontinued operations net of tax	$ 11,491	49,677	11,491
Photonics
Net revenues:
Revenue		27,667	45,696
Cost of net revenues:
Costs of Goods Sold		21,137	27,568
Gross profit		6,530	18,128
Operating expenses:
Operating Expense		11,194	6,693
Operating income (loss)—discontinued operations		(4,664)	11,435
Other income (expense)—discontinued operations		0	56
Income (loss) discontinued operations before provision for (benefit from) income taxes		(4,664)	11,491
Gain on disposal of discontinued operations before income taxes		54,341	0
Total income from discontinued operations, before tax		49,677	11,491
Provision for income taxes		0	0
Net income from discontinued operations net of tax		49,677	11,491
Photonics | Systems and components
Net revenues:
Revenue		15,932	22,751
Cost of net revenues:
Costs of Goods Sold		12,252	12,520
Photonics | Technology development
Net revenues:
Revenue		11,735	22,945
Cost of net revenues:
Costs of Goods Sold		8,885	15,048
Photonics | Research and development
Operating expenses:
Operating Expense		2,653	888
Photonics | Selling, general and administrative
Operating expenses:
Operating Expense		5,937	5,805
Photonics | Asset impairment and restructuring charges
Operating expenses:
Operating Expense		$ 2,604	$ 0

Divestiture and Discontinued _6

Divestiture and Discontinued Operations - Summary of Cash Flow and Non-cash Information Related to Discontinued Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation and amortization	$ 1,366	$ 1,123
Amortization of intangible assets	0	36
Asset impairment charges	1,246	0
Equity-based compensation	1,167	959
Purchase of leasehold improvements and equipment	$ 429	$ 636

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Disaggregation of Revenue [Line Items]
Total net revenues	$ 52,128	$ 38,524	$ 52,128
TFE
Disaggregation of Revenue [Line Items]
Total net revenues		38,524	52,128
TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues	46,046	32,411
TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues		6,113	6,082
HDD | TFE
Disaggregation of Revenue [Line Items]
Total net revenues		34,331	51,700
HDD | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues	45,620	28,300
HDD | TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues		6,031	6,080
DCP | TFE
Disaggregation of Revenue [Line Items]
Total net revenues		17
DCP | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues		3
DCP | TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues		14
PV | TFE
Disaggregation of Revenue [Line Items]
Total net revenues		326	428
PV | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues	$ 426	258
PV | TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues		68	$ 2
ASP | TFE
Disaggregation of Revenue [Line Items]
Total net revenues		3,850
ASP | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues		3,850
ASP | TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues		$ 0

Revenue - Primary Geography Mar

Revenue - Primary Geography Markets (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Disaggregation of Revenue [Line Items]
Total net revenues	$ 52,128	$ 38,524	$ 52,128
Products Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Total net revenues	$ 52,128	38,524
Products and Services Transferred Over Time
Disaggregation of Revenue [Line Items]
Total net revenues		0	0
United States
Disaggregation of Revenue [Line Items]
Total net revenues		3,670	6,450
Asia
Disaggregation of Revenue [Line Items]
Total net revenues		31,004	45,611
Europe
Disaggregation of Revenue [Line Items]
Total net revenues		$ 3,850	$ 67

Revenue - Changes in Contract A

Revenue - Changes in Contract Assets and Contract Liabilities (Detail) - USD ($)	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
TFE
Contract liabilities:
Contract liabilities	$ 2,172,000	$ 515,000
Contract liabilities:
Change in contract liabilities	1,657,000
TFE | Accounts Receivable, Unbilled
Contract assets:
Contract assets	99,000	369,000
Contract assets:
Change in contract assets	(270,000)
TFE | Deferred Revenue
Contract liabilities:
Contract liabilities	65,000	482,000
Contract liabilities:
Change in contract liabilities	(417,000)
TFE | Customer Advances
Contract liabilities:
Contract liabilities	2,107,000	33,000
Contract liabilities:
Change in contract liabilities	2,074,000
Photonics
Contract assets:
Contract assets	0	5,565,000
Contract assets:
Change in contract assets	(5,565,000)
Photonics | Accounts Receivable, Unbilled
Contract assets:
Contract assets	0	5,439,000
Contract assets:
Change in contract assets	(5,439,000)
Photonics | Deferred Revenue
Contract liabilities:
Contract liabilities	0	779,000
Contract liabilities:
Change in contract liabilities	(779,000)
Photonics | Retainage
Contract assets:
Contract assets	0	$ 126,000
Contract assets:
Change in contract assets	$ (126,000)

Revenue - Additional Informatio

Revenue - Additional Information (Detail)	12 Months Ended
	Jan. 01, 2022USD ($)Day
Revenue From Contract With Customers [Line Items]
Number of installments | Day	3
Revenue remaining performance obligation	$ 24,700,000
Revenue recognized	779,000
TFE | Accounts Receivable, Unbilled
Revenue From Contract With Customers [Line Items]
Change in contract assets	(270,000)
TFE | Customer Advances
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	33,000
TFE | Deferred Revenue
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	427,000
Photonics
Revenue From Contract With Customers [Line Items]
Change in contract assets	(5,565,000)
Photonics | Accounts Receivable, Unbilled
Revenue From Contract With Customers [Line Items]
Change in contract assets	$ (5,439,000)

Equity-Based Compensation - Add

Equity-Based Compensation - Additional information (Detail) - USD ($)	Jan. 19, 2022	May 31, 2021	Aug. 31, 2020	May 31, 2020	Jan. 01, 2022	Jan. 02, 2021	Aug. 01, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of option price related to fair market value					100.00%
Common stock shares authorized for further issuance					2,900,000
2012 plan options expiration date					May 13, 2030
Purchase of common stock through payroll deductions					85.00%
Offering periods					2 years
Maximum employee salary withholdings for purchase of common stock under the terms of the ESPP			50.00%		15.00%
Purchase intervals of a series					6 months
Total intrinsic value of options exercised					$ 101,000	$ 110,000
Total unrecognized compensation expense					$ 78,000
RSU conversion ratio					100.00%
Employee stock obligation amount							$ 25,000
Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock pursuant to awards granted	1,200,000
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, expiration period					10 years
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available under issuance of ESPP					729,000
Total unrecognized compensation expense					$ 215,000,000
Unrecognized compensation expenses recognition period					6 months
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expenses recognition period					8 months 19 days
Stock Options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award, vesting period					3 years
Stock Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award, vesting period					4 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expenses recognition period					1 year 4 months 20 days
Unrecognized compensation expense					$ 3,000,000
Granted		126,320		109,465	606,705
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage				100.00%
Restricted Stock Units (RSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award, vesting period					3 years
Restricted Stock Units (RSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award, vesting period					4 years

Equity-Based Compensation - Eff

Equity-Based Compensation - Effect of Recording Equity-Based Compensation (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation		$ 4,003	$ 3,389
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 504	198
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation		2,819	1,936
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation		$ 986	$ 949

Equity-Based Compensation - E_2

Equity-Based Compensation - Effect of Recording Equity-Based Compensation (Detail) (Parenthetical) - USD ($)	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation		$ 4,003,000	$ 3,389,000
Discontinued Operations [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	$ 1,000	$ 1,200

Equity-Based Compensation - Wei

Equity-Based Compensation - Weighted-Average Fair Value of Stock Options and Employee Stock Purchase Rights using Weighted-Average Assumptions (Detail) - $ / shares	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of grants per share	$ 0	$ 1.82
Expected volatility	0.00%	46.06%
Risk free interest rate	0.00%	0.44%
Expected term of options (in years)		4 years 4 months 20 days
Dividend yield	0.00%
Stock Purchase Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of grants per share	$ 2.59	$ 2.20
Expected volatility	60.88%	51.49%
Risk free interest rate	0.08%	0.14%
Expected term of options (in years)	10 months 28 days	1 year 2 months 26 days
Dividend yield	0.00%	0.00%

Equity-Based Compensation - W_2

Equity-Based Compensation - Weighted-Average Fair Value of Performance Stock Options Using Weighted-Average Assumptions (Detail) - Performance Based Restricted Stock Units [Member] - $ / shares	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of grants per share	$ 7.65	$ 3.16
Expected volatility	56.26%	46.70%
Risk free interest rate	0.15%	0.25%
Dividend yield	0.00%	0.00%

Equity-Based Compensation - Opt

Equity-Based Compensation - Option Activity and Changes (Detail)	Jan. 02, 2021USD ($)$ / sharesshares	Jan. 01, 2022USD ($)$ / sharesshares
Shares
Options outstanding at January 2, 2021 | shares		1,814,467
Options cancelled and forfeited | shares		(280,261)
Options exercised | shares		(76,619)
Options outstanding at January 1, 2022 | shares	1,814,467	1,457,587
Options exercisable at January 1, 2022 | shares		1,267,664
Weighted-Average Exercise Price
Options outstanding at January 2, 2021 | $ / shares		$ 6.66
Options cancelled and forfeited | $ / shares		7.44
Options exercised | $ / shares		5.74
Options outstanding at January 1, 2022 | $ / shares	$ 6.66	6.55
Options exercisable at January 1, 2022 | $ / shares		$ 6.74
Weighted Average Remaining Contractual Term
Options outstanding at January 2, 2021	3 years 29 days	2 years 3 months 21 days
Options exercisable at January 1, 2022		2 years 29 days
Aggregate Intrinsic Value
Options outstanding at January 2, 2021 | $	$ 2,520,722	$ 7,622
Options exercisable at January 1, 2022 | $		$ 3,513

Equity-Based Compensation - Sum

Equity-Based Compensation - Summary of Restricted Stock Units Activity (Detail) - Restricted Stock Units (RSUs) - USD ($)	1 Months Ended		12 Months Ended
	May 31, 2021	May 31, 2020	Jan. 01, 2022
Shares
Non-vested RSUs at December 28, 2019			901,634
Granted	126,320	109,465	606,705
Vested			(382,747)
Cancelled			(92,156)
Non-vested RSUs at January 2, 2021			1,033,436
Weighted Average Grant Date Fair Value
Non-vested RSUs at December 28, 2019			$ 5.30
Granted			6.03
Vested			5.71
Cancelled			4.79
Non-vested RSUs at January 2, 2021			$ 5.59
Weighted Average Remaining Contractual Term
Non-vested RSUs at December 28, 2019			1 year 6 months
Non-vested RSUs at January 2, 2021			1 year 4 months 20 days
Aggregate Intrinsic Value
Non-vested RSUs at December 28, 2019			$ 6,500,781
Non-vested RSUs at January 2, 2021			$ 4,867,484

Equity-Based Compensation - Emp

Equity-Based Compensation - Employee Stock Purchase Plan Activities (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Employee Stock Purchase Plan [Line Items]
Shares purchased	435	392
Weighted-average purchase price per share	$ 5.05	$ 4.01
Aggregate intrinsic value of purchase rights exercised	$ 671	$ 765

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Net loss from continuing operations	$ (10,435)	$ (23,057)	$ (10,435)
Net income from discontinued operations, net of tax	11,491	49,677	11,491
Net income	$ 1,056	$ 26,620	$ 1,056
Weighted-average shares - basic		24,348	23,669
Effect of dilutive potential common shares		0	0
Weighted-average shares – diluted		24,348	23,669
Basic and diluted net income (loss) per share:
Basic and diluted—continuing operations	$ (0.44)	$ (0.95)	$ (0.44)
Discontinued operations	0.49	2.04	0.49
Net income per share	$ 0.04	$ 1.09	$ 0.04

Concentrations - Customers That

Concentrations - Customers That Accounted for at Least ten percent of Consolidated Net Revenue (Detail) - Sales Revenue Net - Customer Concentration Risk	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Seagate Technology
Concentration Risk [Line Items]
Concentration risk, percentage	60.00%	79.00%
Amkor Technology Inc. [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%
Western Digital Corporation [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	25.00%	18.00%

Concentrations - Customers Th_2

Concentrations - Customers That Accounted for at Least Ten percent of Accounts Receivable (Detail) - Accounts Receivable - Credit Concentration Risk	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Seagate Technology
Concentration Risk [Line Items]
Concentration risk, percentage		47.00%	45.00%
USGovernment [Member]
Concentration Risk [Line Items]
Concentration risk, percentage			26.00%
Western Digital Corporation [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	16.00%	30.00%
Amkor Technology Inc. [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		22.00%

Balance Sheet Details - Trade a

Balance Sheet Details - Trade and Other Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables and other	$ 14,162	$ 22,712
Unbilled costs and accrued profits	99	5,934
Less: allowance for doubtful accounts	0	0
Trade and other accounts receivable, net of allowances of $0 at both January 2, 2021 and December 28, 2019	$ 14,261	$ 28,646

Balance Sheet Details - Invent

Balance Sheet Details - Inventories Stated at Lower of Average Cost or Net Realizable Value (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Inventory Disclosure [Abstract]
Raw materials	$ 5,323	$ 9,999
Work-in-progress	468	4,832
Finished goods		6,858
Inventories	$ 5,791	$ 21,689

Balance Sheet Details - Propert

Balance Sheet Details - Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Property, Plant and Equipment [Line Items]
Property plant and equipment	$ 33,665	$ 63,169
Less accumulated depreciation and amortization	28,906	52,165
Total property, plant and equipment, net	4,759	11,004
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment	9,847	16,323
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment	$ 23,818	$ 46,846

Balance Sheet Details - Summary

Balance Sheet Details - Summary Of the Net Property, Plant And Equipment By Geographic Region (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Property, Plant and Equipment [Line Items]
Net property, plant & equipment	$ 4,759	$ 11,004
United States
Property, Plant and Equipment [Line Items]
Net property, plant & equipment	4,385	10,678
Asia
Property, Plant and Equipment [Line Items]
Net property, plant & equipment	$ 374	$ 326

Balance Sheet Details - Deferre

Balance Sheet Details - Deferred Income Taxes and Other Long-Term Assets (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Deferred income taxes	$ 5,310	$ 5,335
Prepaid expenses	139	151
Deferred income taxes and other long-term assets	$ 5,449	$ 5,486

Balance Sheet Details - Additio

Balance Sheet Details - Additional Information (Detail) - USD ($)	Jan. 01, 2022	Jan. 02, 2021
Balance Sheet Details [Line Items]
Accounts payable, book overdraft	$ 109,000	$ 84,000

Balance Sheet Details - Other A

Balance Sheet Details - Other Accrued Liabilities (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Accrued Liabilities [Line Items]
Other taxes payable	$ 1,318	$ 935
Litigation settlement	1,000
Income taxes payable	370	263
Restructuring	347
Accrued product warranties	301	405
Other	264	734
Deferred revenue	65	1,261
Total other accrued liabilities	$ 3,665	$ 3,598

Balance Sheet Details - Other L

Balance Sheet Details - Other Long-Term Liabilities (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Other Long Term Liabilities [Line Items]
Restructuring	$ 318
Accrued product warranties	45	$ 75
Employer payroll taxes		382
Total other long-term liabilities	$ 363	$ 457

Financial Instruments - Cash, C

Financial Instruments - Cash, Cash Equivalents and Short-Term Investments and Long-Term Investments (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 120,406	$ 49,530
Unrealized Holding Gains		38
Unrealized Holding Losses	30
Fair Value	120,376	49,568
Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	102,728	29,341
Fair Value	102,728	29,341
Cash and Cash Equivalents | Cash
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	102,494	24,729
Fair Value	102,494	24,729
Cash and Cash Equivalents | Money market funds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	234	3,612
Fair Value	234	3,612
Cash and Cash Equivalents | Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		1,000
Fair Value		1,000
Short-term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,226	14,806
Unrealized Holding Gains		33
Unrealized Holding Losses	5
Fair Value	10,221	14,839
Short-term Investments | Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,916	2,929
Unrealized Holding Gains		6
Unrealized Holding Losses	3
Fair Value	2,913	2,935
Short-term Investments | Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	700	400
Fair Value	700	400
Short-term Investments | U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,910	4,527
Unrealized Holding Gains		25
Unrealized Holding Losses	2
Fair Value	1,908	4,552
Short-term Investments | Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,300	6,450
Unrealized Holding Gains		2
Fair Value	4,300	6,452
Short-term Investments | Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	400	500
Fair Value	400	500
Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,452	5,383
Unrealized Holding Gains		5
Unrealized Holding Losses	25
Fair Value	7,427	5,388
Long-term Investments | Asset backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,040
Unrealized Holding Losses	3
Fair Value	2,037
Long-term Investments | Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,521	3,474
Unrealized Holding Gains		4
Unrealized Holding Losses	6
Fair Value	1,515	3,478
Long-term Investments | Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	145
Unrealized Holding Losses	1
Fair Value	144
Long-term Investments | U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,246	1,409
Unrealized Holding Gains		1
Unrealized Holding Losses	12
Fair Value	3,234	1,410
Long-term Investments | Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	500	500
Unrealized Holding Losses	3
Fair Value	$ 497	$ 500

Financial Instruments - Contrac

Financial Instruments - Contractual Maturities of Available-For-Sale Securities (Detail) $ in Thousands	Jan. 01, 2022USD ($)
Investments Debt And Equity Securities [Abstract]
Amortized Cost, Due in one year or less	$ 10,460
Amortized Cost, Due after one through five years	7,452
Amortized Cost	17,912
Fair Value, Due in one year or less	10,455
Fair Value, Due after one through five years	7,427
Fair Value	$ 17,882

Financial Instruments - Fair Ma

Financial Instruments - Fair Market Value of Investments with Unrealized Losses Not Deemed to be Other-Than Temporarily Impaired (Detail) $ in Thousands	Jan. 01, 2022USD ($)
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Less than 12 Months, Fair Value	$ 12,064
Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	30
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Less than 12 Months, Fair Value	1,497
Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	3
Asset backed securities
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Less than 12 Months, Fair Value	2,037
Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	3
Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Less than 12 Months, Fair Value	3,424
Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	9
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Less than 12 Months, Fair Value	464
Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	1
U.S. Treasury Securities
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Less than 12 Months, Fair Value	4,642
Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	$ 14

Financial Instruments - Fair Va

Financial Instruments - Fair Value Hierarchy of Available-for-Sale Securities Measured at Fair Value on Recurring Basis (Detail) $ in Thousands	Jan. 01, 2022USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	$ 17,882
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	17,882
Fair Value, Measurements, Recurring | Money market funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	234
Fair Value, Measurements, Recurring | Certificates of deposit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	4,797
Fair Value, Measurements, Recurring | Commercial paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	400
Fair Value, Measurements, Recurring | U.S. treasury securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	5,142
Fair Value, Measurements, Recurring | Corporate bonds and medium-term notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	4,428
Fair Value, Measurements, Recurring | Municipal bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	844
Fair Value, Measurements, Recurring | Asset backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	2,037
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	5,376
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Money market funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	234
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | U.S. treasury securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	5,142
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	12,506
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Certificates of deposit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	4,797
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	400
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Corporate bonds and medium-term notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	4,428
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Municipal bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	844
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Asset backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	$ 2,037

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail)	12 Months Ended
	Jan. 01, 2022
Derivative Instrument Detail [Abstract]
Maturity of foreign currency derivative	30 days

Financial Instruments - Summary

Financial Instruments - Summary of Outstanding Derivative Instruments on Gross Basis as Recorded in Consolidated Balance Sheets (Detail) - Undesignated Hedges - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Derivatives, Fair Value [Line Items]
Notional Amounts	$ 815	$ 983
Derivative Asset	1
Derivative Liabilities		3
Forward Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Notional Amounts	815	983
Derivative Asset	$ 1
Derivative Liabilities		$ 3

Equity - Additional Information

Equity - Additional Information (Detail) - USD ($) $ in Millions	Aug. 15, 2018	Jan. 01, 2022	Nov. 21, 2013
Equity [Abstract]
Stock repurchase authorized amount	$ 40		$ 30
Increase in stock repurchase program	$ 10
Stock repurchase remained available for future stock repurchase		$ 10.4

Equity - Schedule of Stock Repu

Equity - Schedule of Stock Repurchases (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Equity [Abstract]
Shares of common stock repurchased	0	98
Cost of stock repurchased	$ 0	$ 393
Average price paid per share	$ 0	$ 3.97

Income Taxes - Provision for In

Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Federal:
Current		$ 0	$ (915)
Deferred		0	0
Federal Income Tax Expense (Benefit), Operations, Total		0	(915)
State:
Current		4	4
Deferred		0	0
State and Local Income Tax Expense (Benefit), Operations, Total		4	4
Foreign:
Current		546	1,705
Deferred		25	917
Foreign Income Tax Expense (Benefit), Operations, Total		571	2,622
Total	$ 1,711	575	1,711
Income taxes on discontinued operations		0	0
Income taxes on continuing operations		$ 575	$ 1,711

Income Taxes - Income (Loss) Be

Income Taxes - Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
U.S		$ (22,694)	$ (14,784)
Foreign		212	6,060
Loss from continuing operations before provision for income taxes	$ (8,724)	$ (22,482)	$ (8,724)
Effective tax rate		(2.60%)	(19.60%)

Income Taxes - Significant Comp

Income Taxes - Significant Components of Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Deferred tax assets:
Vacation, warranty and other accruals	$ 627	$ 651
Intangible amortization	282	551
Purchased technology	17	14
Inventory valuation	1,653	1,101
Equity-based compensation	1,343	1,494
Lease liability	1,659	0
Net operating loss, research and other tax credit carryforwards	53,684	55,322
Other	22	30
Deferred tax assets, gross, total	59,287	59,163
Valuation allowance for deferred tax assets	(52,703)	(52,088)
Total deferred tax assets	6,584	7,075
Deferred tax liabilities:
Depreciation and amortization	(201)	(341)
ROU asset	(1,073)	0
Unbilled revenue	0	(1,399)
Total deferred tax liabilities	(1,274)	(1,740)
Net deferred tax assets	5,310	5,335
As reported on the balance sheet:
Non-current deferred tax assets	$ 5,310	$ 5,335

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	Jan. 02, 2021USD ($)	Jan. 01, 2022USD ($)	Jan. 02, 2021USD ($)	Dec. 29, 2018USD ($)Subsidiary	Jan. 03, 2015USD ($)	Dec. 31, 2012USD ($)	Dec. 31, 2020USD ($)	Dec. 28, 2019USD ($)
Income Taxes [Line Items]
Non-cash income tax benefit	$ 1,711,000	$ 575,000	$ 1,711,000
Number of subsidiaries | Subsidiary				7
Undistributed earnings from non-U.S. operations		1,600,000
Unrecognized tax benefits	7,327,000	718,000	7,327,000					$ 7,683,000
Unrecognized net tax expense (benefit) for interest		0	(2,000)
Accrued interest related to unrealized tax benefits		0
Deferred payroll tax liability							$ 764,000
Proceeds from Income Tax Refunds		18,000	157,000
Proceeds From Government Grants	567,000,000	$ 83,000	567,000
Tax years open for examination after credit losses utilized		3 years
Grant [Member] | Cost of Sales [Member]
Income Taxes [Line Items]
Proceeds From Government Grants	328,000,000	$ 56,000	328,000
Grant [Member] | Research and Development Expense [Member]
Income Taxes [Line Items]
Proceeds From Government Grants	90,000,000	10,000	90,000
Grant [Member] | Selling, General and Administrative Expenses [Member]
Income Taxes [Line Items]
Proceeds From Government Grants	$ 149,000,000	$ 17,000	149,000
Singapore
Income Taxes [Line Items]
Income tax benefit from valuation allowance					$ 9,400,000
Non-cash income tax benefit				$ 7,900,000
Maximum [Member] | Tax Year 2017 [Member]
Income Taxes [Line Items]
Tax years open for examination after credit losses utilized		4 years
Internal Revenue Service (IRS)
Income Taxes [Line Items]
Net operating loss carryforwards		$ 29,400,000
Net operating loss carryforwards, expiration year		2030
Tax credit carryforwards		$ 20,500,000
Tax credit carryforwards, expiration year		2022
United States
Income Taxes [Line Items]
Income tax benefit from valuation allowance		$ 1,100,000	$ 416,000			$ 23,400,000
Foreign Tax Authority
Income Taxes [Line Items]
Net operating loss carryforwards		30,200,000
State and Local Jurisdiction
Income Taxes [Line Items]
Net operating loss carryforwards		$ 70,200,000
Net operating loss carryforwards, expiration year		2028
Tax credit carryforwards		$ 16,000,000

Income Taxes - Difference Betwe

Income Taxes - Difference Between Tax Provision at Statutory Federal Income Tax Rate and Tax Provision (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Reconciliation Of Income Taxes [Line Items]
Income tax at the federal statutory rate		$ (4,721)	$ (1,832)
State income taxes, net of federal benefit		4	4
Effect of foreign operations taxed at various rates		48	(235)
Research tax credits		(1,135)	(1,306)
Effect of tax rate changes, permanent differences and adjustments of prior deferrals		6,285	4,461
Unrecognized tax benefits		0	579
Total	$ 1,711	575	1,711
United States
Reconciliation Of Income Taxes [Line Items]
Change in valuation allowance		94	$ 40
Foreign Tax Authority
Reconciliation Of Income Taxes [Line Items]
Change in valuation allowance

Income Taxes - Aggregate Change

Income Taxes - Aggregate Changes in Balance of Gross Unrecognized Tax benefits (Detail) - USD ($)	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Income Tax Contingency [Line Items]
Beginning balance	$ 7,327,000	$ 7,683,000
Additions based on tax positions related to the current year	24,000	589,000
Decreases for tax positions of prior years	6,622,000	0
Lapse of statute of limitations	(11,000)	(945,000)
Ending balance	$ 718,000	$ 7,327,000

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($)	Jan. 02, 2021	Jan. 01, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined contribution retirement plan, employee eligibility age		18 years
Cash contributions	$ 201,000	$ 188,000
Defined bonus plan, charges to expenses	$ 2,300,000	$ 901,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	Jan. 10, 2022USD ($)Installment	Jan. 01, 2022USD ($)	Jan. 02, 2021USD ($)
Commitments and Contingencies [Line Items]
Letters of credit and bank guarantees outstanding, amount		$ 786,000
Letters of credit and bank guarantees collateralized by restricted cash		$ 786,000
Minimum product warranty range		12 months
Maximum product warranty range		24 months
Product warranty offer on sale		1 day
Future lease obligations		$ 3,400,000
Operating Lease, Payments	$ 2,100,000	$ 3,382,000	$ 3,332,000
Operating lease, quarterly instalment payments	$ 259,000
Number of operating lease payments | Installment	7
Operating lease, first instalment payments	$ 308,000
Maximum
Commitments and Contingencies [Line Items]
Operating lease expiration date		2024-03
EOTECH [Member]
Commitments and Contingencies [Line Items]
Operating Lease, Payments		$ 2,100,000

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Lease Assets and Lease Liabilities (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Assets:
Operating lease ROU assets	$ 4,520	$ 8,165
Liabilities:
Current operating lease liabilities	3,119	2,853
Noncurrent operating lease liabilities	3,675	6,803
Operating Lease, Liability	$ 6,794	$ 9,656

Commitments and Contingencies_3

Commitments and Contingencies - Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Commitments and Contingencies Disclosure [Abstract]
Operating lease cost	$ 2,944	$ 2,942
Short-term lease cost	98	93
Total lease cost	$ 3,042	$ 3,035

Commitments and Contingencies_4

Commitments and Contingencies - Schedule of Maturity of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Loss Contingencies [Line Items]
2022	$ 3,466
2023	3,287
2024	542
Total lease payments	7,295
Less: Interest	(501)
Present value of lease liabilities	6,794	$ 9,656
Discontinued Operations [Member]
Loss Contingencies [Line Items]
2022	1,661
2023	1,710
2024	286
Total lease payments	3,657
Less: Interest	(259)
Present value of lease liabilities	3,398
Continuing Operations [Member]
Loss Contingencies [Line Items]
2022	1,805
2023	1,577
2024	256
Total lease payments	3,638
Less: Interest	(242)
Present value of lease liabilities	$ 3,396

Commitments and Contingencies_5

Commitments and Contingencies - Schedule of Lease Term and Discount Rate (Detail)	Jan. 01, 2022	Jan. 02, 2021
Commitments and Contingencies Disclosure [Abstract]
Weighted-average remaining lease term (in years)	2 years 1 month 9 days	3 years 1 month 2 days
Weighted-average discount rate	6.40%	6.39%

Commitments and Contingencies_6

Commitments and Contingencies - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	Jan. 10, 2022	Jan. 01, 2022	Jan. 02, 2021
Commitments and Contingencies Disclosure [Abstract]
Operating cash outflows from operating leases	$ 2,100	$ 3,382	$ 3,332
ROU asset impairment expense (reported in discontinued operations)		1,246
ROU assets obtained in exchange for new operating lease liabilities		$ 1,200	$ 128

Commitments and Contingencies_7

Commitments and Contingencies - Activity in Warranty Provisions Account (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Commitments and Contingencies Disclosure [Abstract]
Beginning balance	$ 480	$ 1,022
Expenditures incurred under warranties	(622)	(493)
Expenditures incurred under warranties included in discontinued operations	(89)	(19)
Accruals for product warranties	502	237
Accruals for product warranties included in discontinued operations	122	43
Adjustments to previously existing warranty accruals	31	(306)
Adjustments to previously existing warranty accruals included in discontinued operations	(31)	(4)
Sale of Photonics division	(47)
Ending balance	$ 346	$ 480

Restructuring Charges - Additio

Restructuring Charges - Additional Information (Detail)	Jan. 10, 2022USD ($)Installment	Jan. 02, 2021USD ($)	Sep. 26, 2020USD ($)	Jan. 01, 2022USD ($)	Jan. 02, 2021USD ($)	Jan. 01, 2021USD ($)
Restructuring Cost and Reserve [Line Items]
Percentage of reduction of global workforce	1.00%		5.20%
Reduction in salary, wages and other employee-related expenses due to implementation of plan	$ 864,000,000		$ 2,000
Other Employee benefits expense				$ 693,000
Asset impairment charges	1,200,000	$ 0		1,246,000		$ 1,200,000
Other Commitment	665,000	$ 665,000			$ 665,000
Operating cash outflows from operating leases	2,100,000			$ 3,382,000	$ 3,332,000
Operating lease, first instalment payments	308,000
Operating lease, quarterly instalment payments	$ 259,000
Number of operating lease payments | Installment	7

Restructuring Charges - Changes

Restructuring Charges - Changes in Restructuring Reserves (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 0	$ 0
Provision for restructuring reserves		319	$ 103
Cash payments made		(319)	(103)
Provision for restructuring charges associated with Photonics sale		2,604
Non-cash utilization		(1,485)
Ending balance	0	1,023	0
Severance And Other Employee Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	0	0
Provision for restructuring reserves		319	103
Cash payments made		(319)	(103)
Provision for restructuring charges associated with Photonics sale		693
Cash payments made		(96)
Non-cash utilization		(239)
Ending balance	0	358	0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	0	0
Provision for restructuring reserves	0
Cash payments made		0
Provision for restructuring charges associated with Photonics sale		1,911
Cash payments made		(96)
Non-cash utilization		(1,246)
Ending balance	$ 0	$ 665	$ 0