0001437749-24-004522 | 10-K | XBRL Viewer | Lattice Semiconductor Corp

Property, Plant and Equipment [Table Text Block]

	*December 30,*			*December 31,*
(In thousands)	*2023*			*2022*
Production equipment and software	$	159,950		$	149,787
Leasehold improvements		13,519			12,416
Office furniture and equipment		1,933			1,760
		175,402			163,963
Accumulated depreciation and amortization		(125,856	)		(116,349	)
Total property and equipment, net	$	49,546		$	47,614

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
United States	$	29,467	$	29,118

Taiwan		10,222		10,732
Philippines		4,602		3,596
China		2,778		2,229
Other		2,477		1,939
Total foreign property and equipment, net		20,079		18,496
Total property and equipment, net	$	49,546	$	47,614

Note 4 - Balance Sheet Components

12 Months Ended

Dec. 30, 2023

Supplemental Balance Sheet Disclosures [Text Block]

Note 4 - Balance Sheet Components

Accounts Receivable

Accounts receivable do not bear interest and are shown net of an allowance for expected lifetime credit losses, which reflects our best estimate of probable losses inherent in the accounts receivable balance. We determine this allowance through an assessment of known troubled accounts, analysis of our accounts receivable aging, historical experience, expectations for future economic conditions, management judgment, and other available evidence.

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
Accounts receivable	$	104,373	$	94,018
Less: Allowance for credit losses		—		—
Accounts receivable, net of allowance for credit losses	$	104,373	$	94,018

We had no material bad debt expense in fiscal 2023, 2022, or 2021.

Inventories

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
Work in progress	$	65,396	$	58,269
Finished goods		33,430		52,106
Total inventories, net	$	98,826	$	110,375

Accrued Liabilities

Included in Accrued liabilities in the Consolidated Balance Sheets are the following balances:

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
Liability for non-cancelable contracts	$	11,418	$	10,498
Contract liabilities		5,304		17,666
Current portion of operating lease liabilities		5,571		6,454
Foreign, VAT, and other taxes payable		6,758		4,268
Other accrued liabilities		6,997		9,581
Total accrued liabilities	$	36,048	$	48,467

Note 10 - Stock-Based Compensation Plans - Schedule of Share Based Compensation Stock Options Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2023 USD ($) $ / shares shares
Balance (in shares) \| shares	918
Balance (in dollars per share) \| $ / shares	$ 6.7
Granted (in shares) \| shares	0
Granted (in dollars per share) \| $ / shares	$ 0
Exercised (in shares) \| shares	(487)
Exercised (in dollars per share) \| $ / shares	$ 6.66
Forfeited or expired (in shares) \| shares	(3)
Forfeited or expired (in dollars per share) \| $ / shares	$ 5.84
Balance (in shares) \| shares	428
Balance (in dollars per share) \| $ / shares	$ 6.75
Vested and expected to vest (in shares) \| shares	428
Vested and expected to vest (in dollars per share) \| $ / shares	$ 6.75
Vested and expected to vest (Year)	1 year 1 month 28 days
Vested and expected to vest \| $	$ 26,626
Exercisable (in shares) \| shares	428
Exercisable (in dollars per share) \| $ / shares	$ 6.75
Exercisable (Year)	1 year 1 month 28 days
Exercisable, December 30, 2023 \| $	$ 26,626

Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 30, 2023	Feb. 12, 2024	Jul. 01, 2023
Document Information [Line Items]
Entity Central Index Key	0000855658
Entity Registrant Name	Lattice Semiconductor Corp
Amendment Flag	false
Current Fiscal Year End Date	--12-30
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 30, 2023
Document Transition Report	false
Entity File Number	000-18032
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	93-0835214
Entity Address, Address Line One	5555 NE Moore Court
Entity Address, City or Town	Hillsboro
Entity Address, State or Province	OR
Entity Address, Postal Zip Code	97124-6421
City Area Code	503
Local Phone Number	268-8000
Title of 12(b) Security	Common Stock, $.01 par value
Trading Symbol	LSCC
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 10,394,183,650
Entity Common Stock, Shares Outstanding		137,550,564
Auditor Location	San Jose, California
Auditor Name	Ernst & Young LLP
Auditor Firm ID	42

Note 4 - Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Liability for non-cancelable contracts	$ 11,418	$ 10,498
Contract liabilities	5,304	17,666
Foreign, VAT, and other taxes payable	6,758	4,268
Other accrued liabilities	6,997	9,581
Total accrued liabilities	36,048	48,467
Accrued Liabilities [Member]
Current portion of operating lease liabilities	$ 5,571	$ 6,454

Note 10 - Stock-Based Compensation Plans - Share-based Payment Award Stock Options Valuation Assumptions (Details) - Employee Stock Purchase Plan [Member]	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Weighted average expected volatility	48.20%	60.30%	39.90%
Weighted average risk-free interest rate	5.37%	3.74%	0.07%
Expected term (years) (Year)	6 years	6 years	6 years

Note 12 - Income Taxes - Income Before Income Tax Domestic and Foreign (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Domestic	$ 55,069	$ 30,362	$ 24,003
Foreign	159,787	151,750	73,623
Income before income taxes	$ 214,856	$ 182,112	$ 97,626

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Note 4 - Balance Sheet Components - Inventories (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Work in progress	$ 65,396	$ 58,269
Finished goods	33,430	52,106
Total inventories, net	$ 98,826	$ 110,375

Note 12 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Statutory federal rate	21.00%	21.00%	21.00%
State taxes, net	(1.00%)	(2.00%)	(4.00%)
Federal tax credits	(4.00%)	(1.00%)	(3.00%)
Excess tax benefit from stock-based compensation	(2.00%)		(8.00%)
Foreign rate differential	(15.00%)	(16.00%)	(14.00%)
U.S. tax on foreign operations	9.00%	33.00%	3.00%
Capital loss expiration		1.00%	3.00%
Valuation allowance	(29.00%)	(33.00%)	8.00%
Change in uncertain tax benefit accrual		(2.00%)	(5.00%)
Other		1.00%	1.00%
Effective income tax rate	(21.00%)	2.00%	2.00%

Note 6 - Intangible Assets

12 Months Ended

Dec. 30, 2023

Intangible Assets Disclosure [Text Block]

Note 6 - Intangible Assets and Goodwill

In connection with our previous acquisitions, we have recorded identifiable intangible assets related to existing technology, customer relationships, trade names, and trademarks, based on guidance for determining fair value under the provisions of ASC 820, "Fair Value Measurements." We are amortizing the intangible assets using the straight-line method over their estimated useful lives. Additionally, we have entered into license agreements for third-party technology and recorded them as intangible assets. These licenses are being amortized to Research and development expense over their estimated useful lives. No impairment charges relating to acquired intangible assets were recorded for fiscal 2023, 2022, or 2021.

The following tables summarize the details of our Intangible assets, net as of December 30, 2023 and December 31, 2022:

	*December 30, 2023*
(In thousands)	*Weighted Average Amortization Period (in years)*	*Gross*		*Accumulated Amortization*			*Intangible assets, net*
Existing technology	5.1	$	124,487	$	(115,085	)	$	9,402
Customer relationships	6.1		32,734		(25,909	)		6,825
Trade name / trademarks	10.0		1,500		(319	)		1,181
Licensed technology	6.2		7,127		(3,561	)		3,566
Total identified intangible assets		$	165,848	$	(144,874	)	$	20,974

	*December 31, 2022*
(In thousands)	*Weighted Average Amortization Period (in years)*	*Gross*		*Accumulated Amortization*			*Intangible assets, net*
Existing technology	5.1	$	124,487	$	(113,157	)	$	11,330
Customer relationships	6.1		32,734		(24,509	)		8,225
Trade name / trademarks	10.0		1,500		(169	)		1,331
Licensed technology	6.3		6,671		(2,487	)		4,184
Total identified intangible assets		$	165,392	$	(140,322	)	$	25,070

We recorded amortization expense related to intangible assets on the Consolidated Statements of Operations as presented in the following table:

	*Year Ended*
	*December 30,*		*December 31,*		*January 1,*
(In thousands)	*2023*		*2022*		*2022*
Research and development	$	1,074	$	1,054	$	901
Amortization of acquired intangible assets		3,478		3,778		2,613
	$	4,552	$	4,832	$	3,514

The annual expected amortization expense of acquired intangible assets is as follows:

Fiscal year	(In thousands)
2024	$	4,417
2025		4,370
2026		4,362
2027		4,268
2028		3,125
Thereafter		432
Total	$	20,974

Goodwill

Goodwill represents the excess of the purchase price over the fair value of the underlying net tangible and intangible assets. The goodwill balance at December 30, 2023 is comprised of approximately $315.4 million from prior acquisitions. No impairment charges relating to goodwill were recorded for fiscal 2023, 2022, or 2021.

Note 9 - Leases

12 Months Ended

Dec. 30, 2023

Lessee, Operating Leases [Text Block]

Note 9 - Leases

We have operating leases for corporate offices, sales offices, research and development facilities, storage facilities, and a data center, all of which are leased under operating leases that expire at various times through 2029. Our leases have remaining lease terms of less than 1 year to 5 years, some of which include options to extend for up to 5 years, and some of which include options to terminate within 1 year. The weighted-average remaining lease term was 3.3 years and the weighted-average discount rate was 5.8% as of December 30, 2023. We recorded fixed operating lease expense of $7.8 million, $7.6 million, and $7.9 million, respectively, for fiscal 2023, 2022, and 2021.

The following table presents the lease balance classifications within the Consolidated Balance Sheets and summarizes their activity during fiscal 2023:

Operating lease right-of-use assets	(In thousands)
Balance as of December 31, 2022	$	17,590
Right-of-use assets obtained for new lease contracts during the period		3,718
Amortization of right-of-use assets during the period		(6,764	)
Adjustments for present value and foreign currency effects		(57	)
Balance as of December 30, 2023	$	14,487

Operating lease liabilities	(In thousands)
Balance as of December 31, 2022	$	20,072
Lease liabilities incurred for new lease contracts during the period		3,718
Accretion of lease liabilities		1,003
Operating cash used for payments on lease liabilities		(8,344	)
Adjustments for present value and foreign currency effects		(139	)
Balance as of December 30, 2023		16,310
Less: Current portion of operating lease liabilities (included in Accrued liabilities)		(5,571	)
Long-term operating lease liabilities, net of current portion	$	10,739

Lease obligations for facilities restructured prior to the adoption of Topic 842 totaled approximately $4.5 million at December 30, 2023 and continued to be recorded in Other long-term liabilities on our Consolidated Balance Sheets.

Maturities of operating lease liabilities as of December 30, 2023 are as follows:

Fiscal year	(In thousands)
2024	$	6,502
2025		5,049
2026		3,412
2027		1,750
2028		1,235
Thereafter		201
Total lease payments		18,149
Less: amount representing interest		(1,839	)
Total lease liabilities	$	16,310

Note 3 - Revenue From Contracts With Customers

12 Months Ended

Dec. 30, 2023

Revenue from Contract with Customer [Text Block]

Note 3 - Revenue from Contracts with Customers

Disaggregation of Revenue

The following tables provide information about revenue from contracts with customers disaggregated by channel and by geographical market, based on ship-to location of the customer:

	*Year Ended*
*Revenue by Channel*	*December 30,*				*December 31,*				*January 1,*
(In thousands)	*2023*				*2022*				*2022*
Distributors	$	644,181	87	%	$	591,229	89	%	$	449,650	87	%
Direct		92,973	13	%		69,127	11	%		65,677	13	%
Total revenue	$	737,154	100	%	$	660,356	100	%	$	515,327	100	%

*Revenue by Geographical Market*
(In thousands)
China		239,192	32	%		296,917	45	%		281,237	55	%
Japan		110,403	15	%		90,902	14	%		47,915	9	%
Other Asia		94,170	13	%		77,085	12	%		55,416	10	%
Asia		443,765	60	%		464,904	71	%		384,568	74	%
Americas		145,839	20	%		100,260	15	%		80,870	16	%
Europe		147,550	20	%		95,192	14	%		49,889	10	%
Total revenue	$	737,154	100	%	$	660,356	100	%	$	515,327	100	%

Contract Balances

Our contract assets relate to our rights to consideration for licenses and royalties due to us as a member of the HDMI Founders consortium. The balance results primarily from the amount of estimated revenue related to HDMI that we have recognized to date, but which has not yet been distributed to us by the HDMI licensing agent. Contract assets are recorded in Prepaid expenses and other current assets in our Consolidated Balance Sheets.

The following table summarizes activity during the periods presented:

(In thousands)
Contract assets as of January 1, 2022	$	5,672
Revenues recorded during the period		15,848
Transferred to Accounts receivable or collected		(14,173	)
Contract assets as of December 31, 2022	$	7,347
Revenues recorded during the period		12,941
Transferred to Accounts receivable or collected		(9,094	)
Contract assets as of December 30, 2023	$	11,194

Contract liabilities are included in Accrued liabilities on our Consolidated Balance Sheets. The following table summarizes activity during the periods presented:

(In thousands)
Contract liabilities as of January 1, 2022	$	4,768
Prepaid customer deposit		12,811
Accruals for estimated future stock rotation and scrap returns		6,142
Less: Release of accruals for recognized stock rotation and scrap returns		(6,055	)
Contract liabilities as of December 31, 2022	$	17,666
Less: Product shipments from prepaid customer deposit		(12,946	)
Accruals for estimated future stock rotation and scrap returns		9,867
Less: Release of accruals for recognized stock rotation and scrap returns		(9,283	)
Contract liabilities as of December 30, 2023	$	5,304

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

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Basis of Accounting, Policy [Policy Text Block]

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 30, 2023

Accounting Policies [Abstract]

The accompanying Consolidated Financial Statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles ("U.S. GAAP") and pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). They include the accounts of Lattice and its subsidiaries after the elimination of all intercompany balances and transactions.

Use of Estimates, Policy [Policy Text Block]

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments affecting the amounts reported in our consolidated financial statements and the accompanying notes. We base our estimates and judgments on historical experience, knowledge of current conditions, and our beliefs of what could occur in the future considering available information. While we believe that our estimates, assumptions, and judgments are reasonable, they are based on information available when made, and because of the uncertainty inherent in these matters, the actual results that we experience may differ materially from these estimates under different assumptions or conditions. We evaluate our estimates and judgments on an ongoing basis.

Certain prior year balances have been reclassified to conform to the current year’s presentation.

Fiscal Period, Policy [Policy Text Block]

Fiscal Reporting Periods

We report based on a 52 or 53-week fiscal year ending on the Saturday closest to December 31. Our fiscal 2023, 2022, and 2021 were all 52-week years that ended on December 30, 2023, December 31, 2022, and January 1, 2022, respectively. All references to quarterly or annual financial results are references to the results for the relevant fiscal period.

Concentration Risk, Credit Risk, Policy [Policy Text Block]

Concentrations of Risk

Potential exposure to concentrations of risk may impact revenue, accounts receivable, and supply of wafers for our new products.

Distributors have historically accounted for a significant portion of our total revenue. Certain of our largest distributors each account for more than 10% of our total revenue and our net accounts receivable. Revenue attributable to distributors as a percentage of total revenue is presented in the following table:

	*Year Ended*
	*December 30,*			*December 31,*			*January 1,*
	*2023*			*2022*			*2022*
Arrow		32	%		28	%		27	%
Weikeng		21			30			37
Future		13			8			6
Macnica		11			10			7
Other distributors		10			13			10
Revenue attributable to distributors		87	%		89	%		87	%

Three of these distributors each accounted for more than 10% of net accounts receivable at certain dates presented. At December 30, 2023 and December 31, 2022, Arrow accounted for approximately 29% and 27%, respectively, Weikeng accounted for approximately 36% and 47%, respectively, and Future accounted for approximately 18% and 9%, respectively, of net accounts receivable.

Concentration of credit risk with respect to accounts receivable is mitigated by our credit and collection process including active management of collections, credit limits, routine credit evaluations for essentially all customers, and secure transactions with letters of credit or advance payments where appropriate. We regularly review our allowance for doubtful accounts and the aging of our accounts receivable.

We rely on a limited number of foundries for our wafer purchases. We seek to mitigate the concentration of supply risk by establishing, maintaining, and managing multiple foundry relationships; however, certain of our products are sourced from a single foundry and changing from one foundry to another can have a significant cost, or create delays in production or shipments, among other factors.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash Equivalents

We consider all investments that are readily convertible into cash and that have original maturities of three months or less to be cash equivalents. Cash equivalents consist primarily of highly liquid investments in time deposits or money market accounts and are carried at cost, which approximates fair value. Deposits with financial institutions at times exceed Federal Deposit Insurance Corporation insurance limits.

Foreign Currency Transactions and Translations Policy [Policy Text Block]

Foreign Exchange and Translation of Foreign Currencies

While our revenues and the majority of our expenses are denominated in U.S. dollars, we also have international subsidiaries and branch operations that conduct some transactions in currencies that differ from the functional currency of that entity. Gains or losses from foreign exchange rate fluctuations on balances denominated in currencies that differ from the functional currencies are reflected in Other income (expense), net.

We translate accounts denominated in foreign currencies in accordance with ASC 830, “Foreign Currency Matters,” using the current rate method under which asset and liability accounts are translated at the current rate, while stockholders' equity accounts are translated at the appropriate historical rates, and revenue and expense accounts are translated at average monthly exchange rates. Translation adjustments related to the consolidation of foreign subsidiary financial statements are reflected in Accumulated other comprehensive loss in Stockholders' equity (See our Consolidated Statements of Stockholders' Equity).

Revenue from Contract with Customer [Policy Text Block]

Revenue Recognition

Under the terms of ASC 606, "Revenue from Contracts with Customers", we recognize revenue when we satisfy performance obligations as evidenced by the transfer of control of our products or services to customers. For sales to distributors, we have concluded that our contracts are with the distributor, rather than with the distributor’s end customer, as we hold a contract bearing enforceable rights and obligations only with the distributor. Our revenue is derived primarily from sales of silicon-based products, with additional revenue from sales of silicon-enabling products. We consider customer purchase orders, which in some cases are governed by master sales agreements, to be the contracts with a customer. For each contract, we consider our promise to transfer each distinct product to be the identified performance obligations. Revenue for product sales is recognized at the time of product shipment, as determined by the agreed upon contract shipping terms.

Our Licensing and services revenue is comprised of revenue from our IP core licensing activity, patent monetization activities, design services, and royalty and adopter fee revenue from our standards activities. These activities are complementary to our product sales and help us to monetize our IP associated with our technology and standards. We consider licensing arrangements with our customers and agreements with the standards consortia of which we are a member to be the contract. For each contract, we consider the promise to deliver a license that grants the customer the right to use the IP, as well as any professional services provided under the contract, as distinct performance obligations. We recognize license revenue at the point in time that control of the license transfers to the customer, which is generally upon delivery, or as usage occurs.

We measure revenue based on the amount of consideration we expect to be entitled to in exchange for products or services. Variable consideration is estimated and reflected as an adjustment to the transaction price. We determine variable consideration, which consists primarily of various sales price concessions, by estimating the most likely amount of consideration we expect to receive from the customer based on an analysis of historical rebate claims over a period of time considered adequate to account for current pricing and business trends. Sales rebates earned by customers are offset against their receivable balances. Rebates earned by customers when they do not have outstanding receivable balances are recorded within Accrued liabilities. Revenue related to licensing and services, which includes HDMI and MHL standards revenue, as well as certain IP licenses, includes variable consideration in the form of usage-based royalties.

We generally provide an assurance warranty that our products will substantially conform to the published specifications for twelve months from the date of shipment. In some cases, the warranty period may be longer than twelve months. We do not separately price or sell the assurance warranty. Our liability is limited to either a credit equal to the purchase price or replacement of the defective part. Under the practical expedient provided by ASC 340, we generally expense sales commissions when incurred because the amortization period would be less than one year. We record these costs within Selling, general, and administrative expenses. Substantially all of our performance obligations are satisfied within twelve months.

Inventory, Policy [Policy Text Block]

Inventories and Cost of Revenue

Inventories are stated at the lower of actual cost (determined using the first-in, first-out method) or net realizable value. We review and set standard costs quarterly to approximate current actual manufacturing costs. Our manufacturing overhead standards for product costs are calculated assuming full absorption of actual spending over actual costs. The valuation of inventory requires us to estimate excess or obsolete inventory. Material assumptions we use to estimate necessary inventory carrying value adjustments can be unique to each product and are based on specific facts and circumstances. In determining provisions for excess or obsolete products, we consider assumptions such as changes in business and economic conditions, projected customer demand for our products, and changes in technology or customer requirements. The creation of such provisions results in a write-down of inventory to net realizable value and a charge to Cost of revenue. Lower of cost or net realizable value is based on assumptions such as recent historical sales activity and selling prices, as well as estimates of future sales activity and selling prices. Shipping and handling costs are included in Cost of revenue in our Consolidated Statements of Operations.

Property, Plant and Equipment, Policy [Policy Text Block]

Property and Equipment

Property and equipment are stated at cost. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the related assets, generally three to five years for equipment and software, and one to three years for tooling. Leasehold improvements are amortized over the shorter of the non-cancelable lease term or the estimated useful life of the assets. We capitalize costs for the fabrication of masks used by our foundry partners to manufacture our products. The capitalized mask costs begin depreciating to Cost of revenue once the products go into production, and depreciation is straight-lined over a three-year period, which is the expected useful life of the mask. Upon disposal of property and equipment, the accounts are relieved of the costs and related accumulated depreciation and amortization, and resulting gains or losses are reflected in the Consolidated Statements of Operations for recognized gains and losses. Repair and maintenance costs are expensed as incurred.

Business Combinations Policy [Policy Text Block]

Business Combinations

Business combinations are accounted for using the acquisition method of accounting, under which we allocate the purchase price paid for a company to identifiable assets acquired and liabilities assumed based on their estimated fair values at the date of acquisition. Goodwill is measured as the excess of purchase price over the fair value of identifiable assets acquired and liabilities assumed. Determining the fair value of identifiable tangible and intangible assets acquired and liabilities assumed requires management to make assumptions, estimates, and judgments that are based on all available information, including comparable market data and information obtained from our management and the management of the acquired companies. The estimation of the fair values of the intangible assets requires significant judgment and the use of valuation techniques including primarily the income approach. Consideration is given to all relevant factors that might affect the fair value such as estimates of future revenues and costs, present value factors, and the estimated useful lives of intangible assets. We expense acquisition-related costs in the period incurred.

Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]

Impairment of Long-Lived Assets

Long-lived assets, which consist primarily of property and equipment, amortizable intangible assets, and right-of-use assets, are carried on our financial statements based on their cost less accumulated depreciation or amortization. We monitor the carrying value of our long-lived assets for potential impairment and test the recoverability of such assets whenever events or changes in circumstances indicate that their carrying amounts may not be recoverable. These events or changes in circumstances, including management decisions pertaining to such assets, are referred to as impairment indicators. If an impairment indicator occurs, we perform a test of recoverability by comparing the carrying value of the asset group to its undiscounted expected future cash flows. If the carrying values are in excess of undiscounted expected future cash flows, we measure any impairment by comparing the fair value of the asset group to its carrying value. Fair value is generally determined by considering (i) internally developed discounted projected cash flow analysis of the asset group; (ii) actual third-party valuations; and/or (iii) information available regarding the current market for similar asset groups. If the fair value of the asset group is determined to be less than the carrying amount of the asset group, an impairment in the amount of the difference is recorded in the period that the impairment indicator occurs and is included in our Consolidated Statements of Operations. Estimating future cash flows requires significant judgment and projections may vary from the cash flows eventually realized, which could impact our ability to accurately assess whether an asset has been impaired.

Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]

Valuation of Goodwill

Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Goodwill is not amortized, but is instead tested for impairment annually during the fourth quarter and whenever events or changes in circumstances indicate the carrying value of goodwill may not be recoverable. When evaluating whether goodwill is impaired, we make a qualitative assessment to determine if it is more likely than not that the reporting unit's fair value is less than the carrying amount. If the qualitative assessment determines that it is more likely than not that the fair value is less than the carrying amount, the fair value of the reporting unit is compared with its carrying value (including goodwill). If the fair value of the reporting unit is less than its carrying value, then goodwill impairment exists for the reporting unit. The impairment loss, if any, is recognized for the amount by which the carrying value exceeds the fair value. If the fair value of the reporting unit exceeds its carrying value, no further impairment analysis is needed. For purposes of testing goodwill for impairment, we currently operate as a single reporting unit.

Lessee, Leases [Policy Text Block]

Leases

We account for leases under the terms of ASC 842, "Leases," which requires lessees to record assets and liabilities on the balance sheet for all leases with terms longer than 12 months. Under this guidance, we apply the practical expedient to not separate lease and non-lease components for all asset classes.

Right-of-use ("ROU") assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized on the commencement date of the lease based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we determine the present value of lease payments using an incremental borrowing rate based on information from our commercial bank for an equivalent borrowing and term in the respective region as of the lease commencement date. At inception, we determine if an arrangement is a lease, if it includes options to extend or terminate the lease, and if it is reasonably certain that we will exercise the options. Lease cost, representing lease payments over the term of the lease and any capitalizable direct costs less any incentives received, is recognized on a straight-line basis over the lease term as lease expense. We have operating leases for corporate offices, sales offices, research and development facilities, storage facilities, and a data center.

The exercise of lease renewal options is at our sole discretion. When deemed reasonably certain of exercise, the renewal options are included in the determination of the lease term and lease payment obligation, respectively. For our leases that contain variable lease payments, residual value guarantees, or restrictive covenants, we have concluded that these inputs are not significant to the determination of the ROU asset and lease liability.

Research and Development Expense, Policy [Policy Text Block]

Research and Development

Research and development expenses include costs for compensation and benefits, engineering wafers, depreciation and amortization, licenses and masks, and outside engineering services. These expenditures are for the design of new products, intellectual property cores, processes, packaging, and software solutions. Research and development costs are generally expensed as incurred, with certain licensed technology agreements capitalized as intangible assets and amortized to Research and development expense over their estimated useful lives.

Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block]

Restructuring

Expenses associated with exit or disposal activities are recognized when incurred under ASC 420, “Exit or Disposal Cost Obligations,” for everything except severance expenses and vacated leased facilities. Because we have a history of paying severance benefits, the cost of severance benefits associated with a restructuring plan is recorded when such costs are probable and the amount can be reasonably estimated in accordance with ASC 712, “Compensation - Nonretirement Postemployment Benefits.” When leased facilities are vacated, the amount of any ROU asset impairment is calculated in accordance with ASC 360, "Property, Plant, and Equipment" and recorded as a part of Restructuring. Expenses from other exit or disposal activities, including the cancellation of software contracts and engineering tools or the abandonment of long-lived assets, are recorded as a part of Restructuring.

Income Tax, Policy [Policy Text Block]

Accounting for Income Taxes

We are required to estimate our provision for income taxes and amounts ultimately payable or recoverable in numerous tax jurisdictions around the world. These estimates involve significant judgment and interpretations of regulations and are inherently complex. Resolution of income tax treatments in individual jurisdictions may not be known for many years after completion of the applicable year. Deferred tax assets and liabilities are recognized for the expected tax consequences of temporary differences between the tax bases of assets and liabilities and their reported amounts in the financial statements using enacted tax rates and laws that will be in effect when the difference is expected to reverse. Valuation allowances are provided to reduce deferred tax assets to an amount that in management’s judgment is more-likely-than-not to be recoverable against future taxable income. The determination of a valuation allowance and when it should be released requires complex judgment.

In assessing the ability to realize deferred tax assets, we evaluate both positive and negative evidence that may exist and consider whether it is more-likely-than-not that some portion or all of the deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Any adjustment to the net deferred tax asset valuation allowance is recorded in the Consolidated Statements of Operations for the period that the adjustment is determined to be required.

Our income tax calculations are based on application of the respective U.S. federal, state or foreign tax law. Our tax filings, however, are subject to audit by the relevant tax authorities. Accordingly, we recognize tax liabilities based upon our estimate of whether, and the extent to which, additional taxes will be due when such estimates are more-likely-than-not to be sustained. An uncertain income tax position will not be recognized if it has less than a 50% likelihood of being sustained. To the extent the final tax liabilities are different than the amounts originally accrued, the increases or decreases as well as any interest or penalties are recorded as income tax expense or benefit in the Consolidated Statements of Operations. We recognize the tax impact of including certain foreign earnings in U.S. taxable income as a period cost.

Share-Based Payment Arrangement [Policy Text Block]

Stock-Based Compensation

We estimate the fair value of share-based awards consistent with the provisions of ASC 718, “Compensation - Stock Compensation.” We value RSUs using the closing market price on the date of grant, and we value stock options using the Black-Scholes option pricing model. We have also granted RSUs with a market condition or a performance condition to certain executives. The terms of these grants, including achievement criteria and vesting schedules, are detailed under the heading "Market-Based and Performance-Based Awards — Grants" in "Note 10 - Stock-Based Compensation Plans." Our current practice is to issue new shares to satisfy option exercises. For RSUs, we issue new shares when awards vest and withhold a portion of these shares on behalf of employees to satisfy the minimum statutory tax withholding requirements.

Segment Reporting, Policy [Policy Text Block]

Segment Information

As of December 30, 2023, we had one operating segment: the core Lattice business, which includes silicon-based and silicon-enabling products, evaluation boards, development hardware, and related intellectual property licensing, services, and sales. Our chief operating decision maker is the Chief Executive Officer, who reviews operating results and financial information presented on a consolidated basis for purposes of making operating decisions, allocating resources, and evaluating financial performance.

Note 9 - Leases - Lease Balance Classifications Within the Consolidated Balance Sheets and Lease Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Balance	$ 17,590
Right-of-use assets obtained for new lease contracts during the period	3,718
Amortization of right-of-use assets during the period	(6,764)	$ (6,512)	$ (6,587)
Adjustments for present value and foreign currency effects	(57)
Balance	14,487	17,590
Balance	20,072
Lease liabilities incurred for new lease contracts during the period	3,718
Accretion of lease liabilities	1,003
Operating cash used for payments on lease liabilities	(8,344)	(7,419)	$ (7,639)
Adjustments for present value and foreign currency effects	(139)
Balance	16,310	20,072
Long-term operating lease liabilities, net of current portion	10,739	$ 13,618
Accounts Payable and Accrued Liabilities [Member]
Less: Current portion of operating lease liabilities (included in Accrued liabilities)	$ (5,571)

Note 3 - Revenue From Contracts With Customers - Contract Balance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022
Contract assets as of January 1, 2022	$ 7,347	$ 5,672
Revenues recorded during the period	12,941	15,848
Transferred to Accounts receivable or collected	(9,094)	(14,173)
Contract assets, balance	11,194	7,347
Contract liabilities as of January 1, 2022	17,666	4,768
Prepaid customer deposit	12,946	12,811
Accruals for estimated future stock rotation and scrap returns	9,867	6,142
Less: Release of accruals for recognized stock rotation and scrap returns	(9,283)	(6,055)
Less: Product shipments from prepaid customer deposit	(12,946)	(12,811)
Contract liabilities, balance	$ 5,304	$ 17,666

Note 11 - Common Stock Repurchase Program (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended
	Nov. 30, 2023	Dec. 30, 2023	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022	Aug. 08, 2022
Stock Repurchased and Retired During Period, Value			$ 80,196	$ 110,131	$ 70,124
Repurchase Program 2023 [Member]
Stock Repurchase Program, Authorized Amount						$ 150,000
Stock Repurchased and Retired During Period, Shares (in shares)		872,994	1,224,443,000,000
Stock Repurchased and Retired During Period, Value		$ 50,200	$ 80,200
Shares Acquired, Average Cost Per Share (in dollars per share)		$ 57.49	$ 65,500,000
Repurchase Program 2024 [Member]
Stock Repurchase Program, Authorized Amount	$ 250,000
Stock Repurchased and Retired During Period, Shares (in shares)	0

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 30, 2023	Dec. 31, 2022
Preferred stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	137,340,000	137,099,000
Common stock, shares outstanding (in shares)	137,340,000	137,099,000

Note 9 - Leases (Tables)

12 Months Ended

Dec. 30, 2023

Lessee, Operating Lease Right-of-Use Assets and Liabilities [Table Text Block]

Operating lease right-of-use assets	(In thousands)
Balance as of December 31, 2022	$	17,590
Right-of-use assets obtained for new lease contracts during the period		3,718
Amortization of right-of-use assets during the period		(6,764	)
Adjustments for present value and foreign currency effects		(57	)
Balance as of December 30, 2023	$	14,487

Operating lease liabilities	(In thousands)
Balance as of December 31, 2022	$	20,072
Lease liabilities incurred for new lease contracts during the period		3,718
Accretion of lease liabilities		1,003
Operating cash used for payments on lease liabilities		(8,344	)
Adjustments for present value and foreign currency effects		(139	)
Balance as of December 30, 2023		16,310
Less: Current portion of operating lease liabilities (included in Accrued liabilities)		(5,571	)
Long-term operating lease liabilities, net of current portion	$	10,739

Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

Fiscal year	(In thousands)
2024	$	6,502
2025		5,049
2026		3,412
2027		1,750
2028		1,235
Thereafter		201
Total lease payments		18,149
Less: amount representing interest		(1,839	)
Total lease liabilities	$	16,310

Note 4 - Balance Sheet Components - Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Accounts receivable	$ 104,373	$ 94,018
Less: Allowance for credit losses	0	0
Accounts receivable, net of allowance for credit losses	$ 104,373	$ 94,018

Note 6 - Intangible Assets - Finite Lived Intangible Assets Future Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 30, 2022
2024	$ 4,417
2025	4,370
2026	4,362
2027	4,268
2028	3,125
Thereafter	432
Total	$ 20,974	$ 25,070

Note 14 - Contingencies (Details Textual) $ in Millions	12 Months Ended
Note 14 - Contingencies (Details Textual) $ in Millions	Dec. 30, 2023 USD ($)
Action in Oregon in Connection with Sale of Certain Products [Member]
Loss Contingency, Damages Sought, Value	$ 180

Note 1 - Basis of Presentation and Significant Accounting Policies

12 Months Ended

Dec. 30, 2023

Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]

Note 1 - Basis of Presentation and Significant Accounting Policies

Basis of Presentation and Use of Estimates

Certain prior year balances have been reclassified to conform to the current year’s presentation.

Fiscal Reporting Periods

Concentrations of Risk

Potential exposure to concentrations of risk may impact revenue, accounts receivable, and supply of wafers for our new products.

	*Year Ended*
	*December 30,*			*December 31,*			*January 1,*
	*2023*			*2022*			*2022*
Arrow		32	%		28	%		27	%
Weikeng		21			30			37
Future		13			8			6
Macnica		11			10			7
Other distributors		10			13			10
Revenue attributable to distributors		87	%		89	%		87	%

Cash and Cash Equivalents

Foreign Exchange and Translation of Foreign Currencies

Revenue Recognition

Inventories and Cost of Revenue

Property and Equipment

Business Combinations

Impairment of Long-Lived Assets

Valuation of Goodwill

Leases

Research and Development

Restructuring

Accounting for Income Taxes

Stock-Based Compensation

Segment Information

Note 9 - Leases (Details Textual) - USD ($) $ in Millions	12 Months Ended
Note 9 - Leases (Details Textual) - USD ($) $ in Millions	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	5.80%
Operating Lease, Cost	$ 7.8	$ 7.6	$ 7.9
Operating Lease Liability for Previously Restructured Facilities	$ 4.5
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year
Lessee, Operating Lease, Option to Extend, Period (Year)	5 years
Maximum [Member]
Lessee, Operating Lease, Option to Extend, Period (Year)	5 years
Lessee, Operating Lease, Option to Terminate Period (Year)	1 year

Note 11 - Common Stock Repurchase Program

12 Months Ended

Dec. 30, 2023

Treasury Stock [Text Block]

Note 11 - Common Stock Repurchase Program

On August 8, 2022, we announced that our Board of Directors had approved a stock repurchase program pursuant to which up to $150 million of outstanding common stock could be repurchased from time to time (the "2023 Repurchase Program"). The duration of the 2023 Repurchase Program was through December 30, 2023. During the fourth quarter of fiscal 2023, we repurchased 872,994 shares for $50.2 million, or an average price paid per share of $57.49, under the 2023 Repurchase Program. All repurchases were open market transactions funded from available working capital. All shares repurchased pursuant to the 2023 Repurchase Program were retired by the end of the fourth quarter of fiscal 2023. We repurchased a total of 1,224,443 shares for $80.2 million, or an average price paid per share of $65.50, during fiscal year 2023.

On November 30, 2023, we announced that our Board of Directors had approved a stock repurchase program pursuant to which up to an additional $250 million of outstanding common stock could be repurchased from time to time (the "2024 Repurchase Program"). The duration of the 2024 Repurchase Program is through December 28, 2024. No shares were repurchased under the 2024 Repurchase Program during the fourth quarter of fiscal 2023.

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 128,317	$ 145,722
Accounts receivable, net of allowance for credit losses	104,373	94,018
Inventories, net	98,826	110,375
Prepaid expenses and other current assets	36,430	29,052
Total current assets	367,946	379,167
Property and equipment, net	49,546	47,614
Operating lease right-of-use assets	14,487	17,590
Intangible assets, net	20,974	25,070
Goodwill	315,358	315,358
Deferred income taxes	57,762	1,022
Other long-term assets	14,821	12,892
Total assets	840,894	798,713
Current liabilities:
Accounts payable	34,487	42,036
Accrued liabilities	36,048	48,467
Accrued payroll obligations	26,865	36,870
Total current liabilities	97,400	127,373
Long-term debt	0	128,752
Long-term operating lease liabilities, net of current portion	10,739	13,618
Other long-term liabilities	40,735	41,807
Total liabilities	148,874	311,550
Contingencies (Note 14)
Stockholders' equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued and outstanding	0	0
Common stock, $.01 par value, 300,000,000 shares authorized; 137,340,000 shares issued and outstanding as of December 30, 2023 and 137,099,000 shares issued and outstanding as of December 31, 2022	1,373	1,371
Additional paid-in capital	545,586	599,300
Retained earnings (Accumulated deficit)	147,967	(111,094)
Accumulated other comprehensive loss	(2,906)	(2,414)
Total stockholders' equity	692,020	487,163
Total liabilities and stockholders' equity	$ 840,894	$ 798,713

Note 1 - Basis of Presentation and Significant Accounting Policies (Details Textual)	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Number of Operating Segments	1
Production Equipment and Software [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Production Equipment and Software [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Tools, Dies and Molds [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	1 year
Tools, Dies and Molds [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Accounts Receivable [Member] \| Arrow Electronics Inc [Member] \| Customer Concentration Risk [Member]
Concentration Risk, Percentage	29.00%	27.00%
Accounts Receivable [Member] \| Weikeng Group [Member] \| Customer Concentration Risk [Member]
Concentration Risk, Percentage	36.00%	47.00%
Accounts Receivable [Member] \| Future Group [Member] \| Customer Concentration Risk [Member]
Concentration Risk, Percentage	18.00%	9.00%
Revenue Benchmark [Member] \| Sell-through Distributors Concentration Risk [Member]
Number of Distributors	3
Revenue Benchmark [Member] \| Arrow Electronics Inc [Member] \| Customer Concentration Risk [Member]
Concentration Risk, Percentage	32.00%	28.00%	27.00%
Revenue Benchmark [Member] \| Weikeng Group [Member] \| Customer Concentration Risk [Member]
Concentration Risk, Percentage	21.00%	30.00%	37.00%
Revenue Benchmark [Member] \| Future Group [Member] \| Customer Concentration Risk [Member]
Concentration Risk, Percentage	13.00%	8.00%	6.00%

Note 7 - Long-term Debt

12 Months Ended

Dec. 30, 2023

Long-Term Debt [Text Block]

Note 7 - Long-Term Debt

On September 1, 2022, we entered into an Amended and Restated Credit Agreement (the “2022 Credit Agreement”), which provides for a five-year secured revolving loan facility with an aggregate principal amount of up to $350 million, along with other components and options currently not in use.

We drew down an initial $150 million revolving loan at closing, which we used along with $1.9 million of cash to (i) repay the $150.5 million term loan, revolving loan, and accrued interest obligations outstanding under our previous credit agreement (the “2019 Credit Agreement”), and (ii) pay fees and expenses totaling $1.4 million incurred in connection with the 2022 Credit Agreement. We intend to use the revolving loan facility for working capital and general corporate purposes.

At our option, the revolving loans accrue interest at a per annum rate based on ranges determined by our consolidated total leverage ratio of either (i) the base rate (as defined in the 2022 Credit Agreement) plus a margin ranging from 0.25% to 1.00%, or (ii) the adjusted Term Secured Overnight Financing Rate ("SOFR") for interest periods of 1, 3 or 6 months plus a margin ranging from 1.25% to 2.00%. Interest is due and payable in arrears quarterly for loans bearing interest at the base rate and at the end of an interest period (or at each three-month interval in the case of loans with interest periods greater than three months) in the case of loans bearing interest at the adjusted Term SOFR. In addition, we pay a quarterly commitment fee of 0.20% on the unused portion of the revolving facility.

With the amendment of our 2019 Credit Agreement pursuant to the 2022 Credit Agreement, we capitalized $0.9 million of the new debt costs, and expensed $0.7 million of debt costs and existing original issue discount ("OID") as a loss on refinancing in Other income (expense), net on our Consolidated Statements of Operations for fiscal 2022. We determine the Current portion of long-term debt, if any, as the sum of the required debt payments to be made over the next twelve months, reduced by the OID and the debt issuance costs to be amortized over the next twelve months.

The revolving loans under the 2022 Credit Agreement may be repaid and reborrowed at our discretion, with any remaining outstanding principal amount due and payable on the maturity date of the revolving loans on September 1, 2027. During fiscal 2023, we made discretionary payments totaling $130 million on the revolving loans outstanding under the 2022 Credit Agreement.

The fair value of our long-term debt approximates the carrying value, which is reflected in our Consolidated Balance Sheets as follows:

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
Principal amount	$	-	$	130,000
Unamortized original issuance discount and debt costs		—		(1,248	)
Long-term debt, net of unamortized debt issue costs	$	-	$	128,752

Interest expense related to our long-term debt is included in Interest expense on our Consolidated Statements of Operations as follows:

	*Year Ended*
	*December 30,*		*December 31,*		*January 1,*
(In thousands)	*2023*		*2022*		*2022*
Contractual interest	$	2,701	$	4,500	$	2,304
Amortization of original issuance discount and debt costs		266		310		362
Total interest expense related to long-term debt	$	2,967	$	4,810	$	2,666

Note 10 - Stock-Based Compensation Plans

12 Months Ended

Dec. 30, 2023

Share-Based Payment Arrangement [Text Block]

Note 10 - Stock-Based Compensation Plans

Employee and Director Stock Options, Restricted Stock, and ESPP Plans

As of December 30, 2023, we have two active equity incentive plans, the "2023 Equity Incentive Plan" (which was adopted in 2023 and superseded the "2013 Incentive Plan"such that no additional shares will be granted under the 2013 Incentive Plan) and the "2011 Non-Employee Director Equity Incentive Plan", under which shares remain available for grants to employees and non-employee directors, respectively. "Incentive stock options" under Section 422 of the U.S. Internal Revenue Code and restricted stock unit ("RSU") grants are part of our equity compensation practices for employees who receive equity grants. Options and RSUs generally vest quarterly over a four-year period beginning on the grant date. The contractual terms of options granted do not exceed ten years.

We also maintain the 2012 Employee Stock Purchase Plan ("2012 ESPP"), pursuant to which eligible employees may contribute through payroll deductions up to 10% of base compensation, subject to certain income limits, to purchase shares of our common stock. The purchase price of the shares is the lower of 85% of the fair market value of the stock at the beginning of each six-month offering period or 85% of the fair market value at the end of such period. We have treated the 2012 ESPP as a compensatory plan. At December 30, 2023, a total of 0.9 million shares of our common stock were available for future purchases under the 2012 ESPP.

At December 30, 2023, a total of 11.7 million shares of our common stock were available for future grants under the 2023 Equity Incentive Plan and the 2011 Non-Employee Director Equity Incentive Plan. Neither the 2023 Equity Incentive Plan nor the 2011 Non-Employee Director Equity Incentive Plan have any fungible share ratio or counting provision. Shares subject to stock option grants that expire or are canceled, without delivery of such shares, generally become available for re-issuance under equity incentive plans.

Stock-Based Compensation Expense

Total stock-based compensation expense included in our Consolidated Statements of Operations is presented in the following table:

	*Year Ended*
	*December 30,*		*December 31,*		*January 1,*
(In thousands)	*2023*		*2022*		*2022*
Cost of revenue	$	4,506	$	3,674	$	3,049
Research and development		27,782		19,645		14,563
Selling, general, and administrative		37,909		32,211		28,863
Total stock-based compensation	$	70,197	$	55,530	$	46,475

The income tax benefit related to total stock-based compensation expense was $7.6 million for fiscal 2023, which is reflected in Income tax (benefit) expense in the Consolidated Statements of Operations. The income tax benefit related to awards vested or exercised during fiscal 2023 was $10.4 million. The income tax benefits related to stock-based compensation were not significant for the periods presented prior to fiscal 2023 as they were offset by an increase in valuation allowance.

ESPP and Stock Options

The fair values of the shares expected to be issued under the employee stock purchase plan and of each option award on the date of grant were estimated using the Black-Scholes valuation model and the assumptions noted in the following table. No new stock options were granted during fiscal 2023, 2022, or 2021. The expected volatility of both ESPP shares and stock options is based on the daily historical volatility of our stock price, measured over the ESPP purchase period or the expected term of the option. The risk-free interest rate is based on the implied yield on a U.S. Treasury zero-coupon issue with a remaining term closest to the expected term of the option. The expected term is based on historical vested option exercises and includes an estimate of the expected term for options that are fully vested and outstanding. Dividend yield has no valuation impact, as we have not paid any cash dividends since inception and do not intend to pay any cash dividends in the foreseeable future.

The following table summarizes the assumptions used in the valuation of ESPP compensation for the periods presented:

	*Year Ended*
	*December 30,*	*December 31,*	*January 1,*
	*2023*	*2022*	*2022*
Employee Stock Purchase Plan
Weighted average expected volatility	48.2%	60.3%	39.9%
Weighted average risk-free interest rate	5.37%	3.74%	0.07%
Expected term (in months)	6	6	6

The weighted average fair values for the ESPP, calculated using the Black-Scholes option pricing model with the noted assumptions for the ESPP, were $24.38, $15.25, and $13.04 for fiscal years 2023, 2022, and 2021, respectively.

At December 30, 2023, there was no unrecognized compensation cost related to unvested employee and director stock options. Compensation expense for all stock-based compensation awards is recognized using the straight-line method. We recorded stock-based compensation expense related to the ESPP of approximately $2.2 million, $1.5 million, and $1.2 million in fiscal 2023, 2022, and 2021, respectively. Related to stock options, we recorded no expense in fiscal 2023 and 2022, and approximately $1.0 million in fiscal 2021.

The following table summarizes our stock option activity and related information for the year ended December 30, 2023:

(Shares and aggregate intrinsic value in thousands)	*Shares*			*Weighted average exercise price*		*Weighted average remaining contractual term (years)*		*Aggregate Intrinsic Value*
Balance, December 31, 2022		918		$	6.70
Granted		—			—
Exercised		(487	)		6.66
Forfeited or expired		(3	)		5.84
Balance, December 30, 2023		428		$	6.75
Vested and expected to vest at December 30, 2023		428		$	6.75		1.16	$	26,626
Exercisable, December 30, 2023		428		$	6.75		1.16	$	26,626

The aggregate intrinsic value in the table above represents the total pretax intrinsic value (the difference between the Company's closing stock price on the last trading day of the fiscal year and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on that day. This amount changes based on the fair market value of the Company's stock. Total intrinsic value of options exercised for fiscal 2023, 2022, and 2021 was $37.3 million, $24.3 million, and $44.7 million, respectively.

Time-Based Restricted Stock Unit Awards

The following table summarizes the activity for our time-based RSUs for the year ended December 30, 2023:

(Shares in thousands)	*Shares*			*Weighted average grant date fair value*
Balance, December 31, 2022		1,821		$	50.18
Granted		995			84.80
Vested		(880	)		41.63
Forfeited or expired		(55	)		56.69
Balance, December 30, 2023		1,881		$	72.31

At December 30, 2023, there was $121.3 million of unrecognized compensation expense related to unvested time-based RSUs. Compensation expense for RSUs is recognized using the straight-line method over the related vesting period. In fiscal 2023, 2022, and 2021, we recorded stock-based compensation expense related to time-based RSUs of approximately $41.5 million, $30.1 million, and $21.7 million, respectively.

Market-Based and Performance-Based Awards

In 2021 through 2023, we granted awards of RSUs with either a market condition or a performance condition to certain executives.

Market-Based and Performance-Based Awards — Grants

In the first and third quarters of fiscal 2023, and in the first quarters of fiscal 2022 and 2021, we granted awards of RSUs with a market condition to certain executives. Under the terms of these grants, the RSUs with a market condition vest over a three-year period based on the Company's total shareholder return ("TSR") relative to a specified index. For the 2023 grants, the TSR condition is measured relative to the Russell 3000 index on either the third anniversary of the grant date, or equally on the first, second, and third anniversary of the grant date, depending on the executive. For the 2022 and 2021 grants, the TSR condition is measured relative to the Russell 2000 index on the third anniversary of the grant date. The awards may vest at 250% or 200%, depending on the executive, if the 75th percentile of the market condition is achieved, with 100% of the units vesting at the 55th percentile, zero vesting if relative TSR is below the 25th percentile, and vesting scaling for achievement between the 25th and 75th percentile.

In the first quarter of fiscal 2021, we also granted awards of RSUs with a performance condition to certain executives, to specifically drive additional executive attention and focus on the Company’s revenue growth priorities. Under the terms of these grants, the RSUs with a performance condition will vest based on the Company generating specified levels of year-over-year revenue growth, which will be measured annually for one-fourth of the grants after each fiscal year-end through the end of fiscal 2024. Vesting of these awards scales for achievement of year-over-year revenue growth compared to certain targets, with maximum vesting up to 200%. Vesting of each tranche of these awards occurs 13 months after the performance conditions is met, and the entire award cannot be fully earned until five years from grant. For the second and third tranches of these awards, the Company had met the year-over-year revenue growth performance criteria at the 200% and 116.3% level of achievement, respectively, as of December 31, 2022 and December 30, 2023.

Market-Based and Performance-Based Awards — Vesting

During fiscal 2023, the market condition for awards granted to certain executives in previous years exceeded the 75th percentile of their TSR condition, and applicable tranches of these awards vested at 250% or 200% for the respective executives. Also during 2023, the first tranche of awards granted in fiscal 2021 with a year-over-year revenue growth performance condition vested at the 200% level of achievement, as the Company met the maximum year-over-year revenue growth performance criteria as of January 1, 2022, and the 13-month vesting period had been met.

During fiscal 2022, the market condition for awards granted to certain executives in previous years exceeded the 75th percentile of their TSR condition, and applicable tranches of these awards vested at 250% or 200% for the respective executives. Also during fiscal 2022, the fifth and sixth tranches of 40% and 70%, respectively, of the base number of the awards with an EBITDA performance condition vested, as the Company had met the adjusted EBITDA performance criteria on a trailing four-quarter basis for two consecutive trailing four-quarter periods as of the end of the respective measurement periods.

During fiscal 2021, the market condition for awards granted to certain executives in previous years exceeded the 75th percentile of their TSR condition, and applicable tranches of these awards vested at 250% or 200% for the respective executives. Also during fiscal 2021, the second and third tranches, each 33.3% of the base number of the awards with an EBITDA performance condition vested and released, as the Company had met the adjusted EBITDA performance criteria on a trailing four-quarter basis for two consecutive trailing four-quarter periods as of the end of the respective measurement periods. Additionally, as of January 1, 2022, the Company had met the next adjusted EBITDA performance criteria on a trailing four-quarter basis for two consecutive trailing four-quarter periods, and the fourth tranche of the awards with an EBITDA performance condition qualified for vesting at 40% of the base number.

Market-Based and Performance-Based Awards — Compensation Expense

For our awards with a market condition or a performance condition, we incurred stock-based compensation expense of approximately $26.4 million, $24.0 million, and $22.1 million in fiscal years 2023, 2022, and 2021, respectively, which is recorded as a component of total stock-based compensation. At December 30, 2023, there was $27.3 million of unrecognized compensation expense related to unvested RSUs with a market condition or a performance condition. Awards with a TSR market condition were valued using a Monte Carlo simulation model.

The following table summarizes the assumptions used at the grant date in the valuation of RSUs with a market or performance condition:

	*Year Ended*
	*December 30,*	*December 31,*	*January 1,*
	*2023*	*2022*	*2022*
Executive RSUs with a market condition or performance condition
Weighted average expected volatility	50.97% to 54.31%	51.44%	50.37% to 52.11%
Weighted average risk-free interest rate	4.28% to 4.59%	1.67%	0.22% to 0.77%
Expected term (years)	3	3	3 to 5

The following table summarizes the activity for our awards with a market condition or performance condition:

(Shares in thousands)	*Shares*			*Weighted average grant date fair value*
Balance, December 31, 2022		985		$	60.15
Granted		172			146.69
Effect of vesting multiplier		334
Vested		(639	)		40.22
Balance, December 30, 2023		852		$	84.73

Note 7 - Long-term Debt (Tables)

12 Months Ended

Dec. 30, 2023

Schedule of Long-Term Debt Instruments [Table Text Block]

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
Principal amount	$	-	$	130,000
Unamortized original issuance discount and debt costs		—		(1,248	)
Long-term debt, net of unamortized debt issue costs	$	-	$	128,752

Interest Income and Interest Expense Disclosure [Table Text Block]

	*Year Ended*
	*December 30,*		*December 31,*		*January 1,*
(In thousands)	*2023*		*2022*		*2022*
Contractual interest	$	2,701	$	4,500	$	2,304
Amortization of original issuance discount and debt costs		266		310		362
Total interest expense related to long-term debt	$	2,967	$	4,810	$	2,666

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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Note 2 - Net Income Per Share (Tables)

12 Months Ended

Dec. 30, 2023

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	*Year Ended*
	*December 30,*		*December 31,*		*January 1,*
(In thousands, except per share data)	*2023*		*2022*		*2022*
Net income	$	259,061	$	178,882	$	95,922

Shares used in basic Net income per share		137,694		137,321		136,619
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition		2,096		3,346		5,524
Shares used in diluted Net income per share		139,790		140,667		142,143

Basic Net income per share	$	1.88	$	1.30	$	0.70
Diluted Net income per share	$	1.85	$	1.27	$	0.67

Year Ended

December 30,

December 31,

January 1,

(In thousands)

2023

2022

Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive

376

472

638

Note 8 - Restructuring (Details Textual) - USD ($) $ in Thousands	12 Months Ended				79 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021	Dec. 30, 2023
Restructuring Charges	$ 1,908	$ 2,551	$ 940
Operating Lease, Impairment Loss	0	1,149	$ 0
Q3 2023 Plan [Member]
Restructuring and Related Cost, Incurred Cost	2,000
Restructuring and Related Cost, Cost Incurred to Date	2,000				$ 2,000
Q2 2019 Sales Plan [Member]
Restructuring and Related Cost, Incurred Cost		1,000
Restructuring and Related Cost, Cost Incurred to Date	3,100				3,100
Restructuring Charges	0			$ 0
Q1 2020 Plan [Member]
Restructuring and Related Cost, Incurred Cost	100
June 2017 Plan [Member]
Restructuring and Related Cost, Incurred Cost	$ 700	1,600			$ 23,300
June 2017 Plan [Member] \| San Jose [Member]
Operating Lease, Impairment Loss		$ 1,100

Note 5 - Property and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Depreciation	$ 17.3	$ 13.8	$ 12.0

Note 2 - Net Income Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Net income	$ 259,061	$ 178,882	$ 95,922
Shares used in basic Net income per share (in shares)	137,694	137,321	136,619
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition (in shares)	2,096	3,346	5,524
Shares used in diluted Net income per share (in shares)	139,790	140,667	142,143
Basic (in dollars per share)	$ 1.88	$ 1.3	$ 0.7
Diluted (in dollars per share)	$ 1.85	$ 1.27	$ 0.67
Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive (in shares)	376	472	638

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Note 7 - Long-term Debt - Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Contractual interest	$ 2,701	$ 4,500	$ 2,304
Amortization of original issuance discount and debt costs	266	310	362
Total interest expense related to long-term debt	$ 2,967	$ 4,810	$ 2,666

Note 3 - Revenue From Contracts With Customers (Tables)

12 Months Ended

Dec. 30, 2023

Disaggregation of Revenue [Table Text Block]

	*Year Ended*
*Revenue by Channel*	*December 30,*				*December 31,*				*January 1,*
(In thousands)	*2023*				*2022*				*2022*
Distributors	$	644,181	87	%	$	591,229	89	%	$	449,650	87	%
Direct		92,973	13	%		69,127	11	%		65,677	13	%
Total revenue	$	737,154	100	%	$	660,356	100	%	$	515,327	100	%

*Revenue by Geographical Market*
(In thousands)
China		239,192	32	%		296,917	45	%		281,237	55	%
Japan		110,403	15	%		90,902	14	%		47,915	9	%
Other Asia		94,170	13	%		77,085	12	%		55,416	10	%
Asia		443,765	60	%		464,904	71	%		384,568	74	%
Americas		145,839	20	%		100,260	15	%		80,870	16	%
Europe		147,550	20	%		95,192	14	%		49,889	10	%
Total revenue	$	737,154	100	%	$	660,356	100	%	$	515,327	100	%

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

(In thousands)
Contract assets as of January 1, 2022	$	5,672
Revenues recorded during the period		15,848
Transferred to Accounts receivable or collected		(14,173	)
Contract assets as of December 31, 2022	$	7,347
Revenues recorded during the period		12,941
Transferred to Accounts receivable or collected		(9,094	)
Contract assets as of December 30, 2023	$	11,194

(In thousands)
Contract liabilities as of January 1, 2022	$	4,768
Prepaid customer deposit		12,811
Accruals for estimated future stock rotation and scrap returns		6,142
Less: Release of accruals for recognized stock rotation and scrap returns		(6,055	)
Contract liabilities as of December 31, 2022	$	17,666
Less: Product shipments from prepaid customer deposit		(12,946	)
Accruals for estimated future stock rotation and scrap returns		9,867
Less: Release of accruals for recognized stock rotation and scrap returns		(9,283	)
Contract liabilities as of December 30, 2023	$	5,304

Note 7 - Long-term Debt (Details Textual) - USD ($) $ in Millions				12 Months Ended
	Sep. 01, 2022	May 17, 2019	May 17, 2018	Dec. 30, 2023	Jan. 01, 2022
The 2022 Credit Agreement [Member[ \| Other (Expense) Income, Net [Member]
Amortization of Debt Issuance Costs and Discounts, Total	$ 0.7
The 2022 Credit Agreement [Member[ \| Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	350.0
Proceeds from Lines of Credit, Total	150.0
Debt Instrument, Fee Amount	1.4
Debt Issuance Costs, Gross	0.9
Repayment of Long-term Debt, Discretionary				$ 130.0
Credit Agreement, May 17, 2019 [Member] \| Term Loan [Member]
Repayments of Fees and Accrued Interest	1.9
Extinguishment of Debt and Accrued Interest, Amount	$ 150.5
Credit Agreement, May 17, 2019 [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility, Commitment Fee Percentage					0.20%
Credit Agreement, May 17, 2019 [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate		0.25%
Credit Agreement, May 17, 2019 [Member] \| Revolving Credit Facility [Member] \| Minimum [Member] \| Term Secured Overnight Financing Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		1.25%
Credit Agreement, May 17, 2019 [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate			1.00%
Credit Agreement, May 17, 2019 [Member] \| Revolving Credit Facility [Member] \| Maximum [Member] \| Term Secured Overnight Financing Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		2.00%

Note 6 - Intangible Assets (Tables)

12 Months Ended

Dec. 30, 2023

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	*December 30, 2023*
(In thousands)	*Weighted Average Amortization Period (in years)*	*Gross*		*Accumulated Amortization*			*Intangible assets, net*
Existing technology	5.1	$	124,487	$	(115,085	)	$	9,402
Customer relationships	6.1		32,734		(25,909	)		6,825
Trade name / trademarks	10.0		1,500		(319	)		1,181
Licensed technology	6.2		7,127		(3,561	)		3,566
Total identified intangible assets		$	165,848	$	(144,874	)	$	20,974

	*December 31, 2022*
(In thousands)	*Weighted Average Amortization Period (in years)*	*Gross*		*Accumulated Amortization*			*Intangible assets, net*
Existing technology	5.1	$	124,487	$	(113,157	)	$	11,330
Customer relationships	6.1		32,734		(24,509	)		8,225
Trade name / trademarks	10.0		1,500		(169	)		1,331
Licensed technology	6.3		6,671		(2,487	)		4,184
Total identified intangible assets		$	165,392	$	(140,322	)	$	25,070

Finite-Lived Intangible Assets Amortization Expense [Table Text Block]

	*Year Ended*
	*December 30,*		*December 31,*		*January 1,*
(In thousands)	*2023*		*2022*		*2022*
Research and development	$	1,074	$	1,054	$	901
Amortization of acquired intangible assets		3,478		3,778		2,613
	$	4,552	$	4,832	$	3,514

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Fiscal year	(In thousands)
2024	$	4,417
2025		4,370
2026		4,362
2027		4,268
2028		3,125
Thereafter		432
Total	$	20,974

Note 10 - Stock-based Compensation - Share Based Compensation Performance Shares Award Market Condition or Performance Condition (Details) - Performance Shares [Member] shares in Thousands	12 Months Ended
	Dec. 30, 2023 $ / shares shares
Balance, Shares (in shares) \| shares	985
Balance, Weighted average grant date fair value (in dollars per share) \| $ / shares	$ 60,150
Granted, Shares (in shares) \| shares	172
Granted, Weighted average grant date fair value (in dollars per share) \| $ / shares	$ 146,690
Effect of vesting multiplier, Shares (in shares) \| shares	334
Effect of vesting multiplier (in dollars per share) \| $ / shares
Vested, Shares (in shares) \| shares	(639)
Vested, Weighted average grant date fair value (in dollars per share) \| $ / shares	$ 40,220
Balance, Shares (in shares) \| shares	852
Balance, Weighted average grant date fair value (in dollars per share) \| $ / shares	$ 84,730

Note 10 - Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 30, 2023

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	*Year Ended*
	*December 30,*		*December 31,*		*January 1,*
(In thousands)	*2023*		*2022*		*2022*
Cost of revenue	$	4,506	$	3,674	$	3,049
Research and development		27,782		19,645		14,563
Selling, general, and administrative		37,909		32,211		28,863
Total stock-based compensation	$	70,197	$	55,530	$	46,475

Schedule of Share-based Payment Award, Stock Options and Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

	*Year Ended*
	*December 30,*	*December 31,*	*January 1,*
	*2023*	*2022*	*2022*
Employee Stock Purchase Plan
Weighted average expected volatility	48.2%	60.3%	39.9%
Weighted average risk-free interest rate	5.37%	3.74%	0.07%
Expected term (in months)	6	6	6

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

(Shares and aggregate intrinsic value in thousands)	*Shares*			*Weighted average exercise price*		*Weighted average remaining contractual term (years)*		*Aggregate Intrinsic Value*
Balance, December 31, 2022		918		$	6.70
Granted		—			—
Exercised		(487	)		6.66
Forfeited or expired		(3	)		5.84
Balance, December 30, 2023		428		$	6.75
Vested and expected to vest at December 30, 2023		428		$	6.75		1.16	$	26,626
Exercisable, December 30, 2023		428		$	6.75		1.16	$	26,626

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

(Shares in thousands)	*Shares*			*Weighted average grant date fair value*
Balance, December 31, 2022		1,821		$	50.18
Granted		995			84.80
Vested		(880	)		41.63
Forfeited or expired		(55	)		56.69
Balance, December 30, 2023		1,881		$	72.31

Schedule of Share-based Payment Award, Restricted Stock Units, Valuation Assumptions [Table Text Block]

	*Year Ended*
	*December 30,*	*December 31,*	*January 1,*
	*2023*	*2022*	*2022*
Executive RSUs with a market condition or performance condition
Weighted average expected volatility	50.97% to 54.31%	51.44%	50.37% to 52.11%
Weighted average risk-free interest rate	4.28% to 4.59%	1.67%	0.22% to 0.77%
Expected term (years)	3	3	3 to 5

Share-Based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block]

(Shares in thousands)	*Shares*			*Weighted average grant date fair value*
Balance, December 31, 2022		985		$	60.15
Granted		172			146.69
Effect of vesting multiplier		334
Vested		(639	)		40.22
Balance, December 30, 2023		852		$	84.73

Note 4 - Balance Sheet Components (Tables)

12 Months Ended

Dec. 30, 2023

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
Accounts receivable	$	104,373	$	94,018
Less: Allowance for credit losses		—		—
Accounts receivable, net of allowance for credit losses	$	104,373	$	94,018

Schedule of Inventory, Current [Table Text Block]

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
Work in progress	$	65,396	$	58,269
Finished goods		33,430		52,106
Total inventories, net	$	98,826	$	110,375

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
Liability for non-cancelable contracts	$	11,418	$	10,498
Contract liabilities		5,304		17,666
Current portion of operating lease liabilities		5,571		6,454
Foreign, VAT, and other taxes payable		6,758		4,268
Other accrued liabilities		6,997		9,581
Total accrued liabilities	$	36,048	$	48,467

Insider Trading Arrangements	12 Months Ended
Insider Trading Arrangements	Dec. 30, 2023 shares
ecd_TradingArrByIndTable
Material Terms of Trading Arrangement [Text Block]	*Item 9B.* Other Information Rule 10b5-1 Trading Plans** On November 29, 2023, Stephen Douglass, Senior Vice President and Chief Technology Officer, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense condition of Rule 10b5-1(c), pursuant to which an estimated aggregate of 8,275 shares of our Common Stock may be sold. The aggregate number of shares sold may differ based on tax withholdings for vesting stock awards, actual market achievement for performance RSUs, and actual number of future shares purchased under the Employee Stock Purchase Plan. The duration of the trading arrangement is until February 27, 2025, or earlier if all transactions under the trading arrangement are completed. On November 29, 2023, Tracy Feanny, Senior Vice President and General Counsel, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense condition of Rule 10b5-1(c), pursuant to which an estimated aggregate of 11,984 shares of our Common Stock may be sold. The aggregate number of shares sold may differ based on tax withholdings for vesting stock awards and actual market achievement for performance RSUs. The duration of the trading arrangement is until March 4, 2025, or earlier if all transactions under the trading arrangement are completed. On November 29, 2023, Mark Jensen, a Lattice Director, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense condition of Rule 10b5-1(c), pursuant to which an estimated aggregate of 10,855 shares of our Common Stock may be sold. The duration of the trading arrangement is until January 9, 2026, or earlier if all transactions under the trading arrangement are completed. On November 29, 2023, Sherri Luther, Senior Vice President and Chief Financial Officer, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense condition of Rule 10b5-1(c), pursuant to which an estimated aggregate of 42,141 shares of our Common Stock may be sold. The aggregate number of shares sold may differ based on tax withholdings for vesting stock awards and actual market achievement for performance RSUs. The duration of the trading arrangement is until December 3, 2024, or earlier if all transactions under the trading arrangement are completed.
Stephen Douglass [Member]
ecd_TradingArrByIndTable
Trading Arrangement, Securities Aggregate Available Amount (in shares)	8,275
Trading Arrangement Adoption Date	November 29, 2023
Rule 10b5-1 Arrangement Adopted [Flag]	true
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Trading Arrangement Termination Date	February 27, 2025
Rule 10b5-1 Arrangement Terminated [Flag]	true
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false
Tracy Feanny [Member]
ecd_TradingArrByIndTable
Trading Arrangement, Securities Aggregate Available Amount (in shares)	11,984
Trading Arrangement Adoption Date	November 29, 2023
Trading Arrangement Termination Date	March 4, 2025
Mark Jensen [Member]
ecd_TradingArrByIndTable
Trading Arrangement, Securities Aggregate Available Amount (in shares)	10,855
Trading Arrangement Adoption Date	November 29, 2023
Trading Arrangement Termination Date	January 9, 2026
Sherri Luther [Member]
ecd_TradingArrByIndTable
Trading Arrangement, Securities Aggregate Available Amount (in shares)	42,141
Trading Arrangement Adoption Date	November 29, 2023
Trading Arrangement Termination Date	December 3, 2024

Note 1 - Basis of Presentation and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 30, 2023

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	*Year Ended*
	*December 30,*			*December 31,*			*January 1,*
	*2023*			*2022*			*2022*
Arrow		32	%		28	%		27	%
Weikeng		21			30			37
Future		13			8			6
Macnica		11			10			7
Other distributors		10			13			10
Revenue attributable to distributors		87	%		89	%		87	%

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Cash flows from operating activities:
Net income	$ 259,061	$ 178,882	$ 95,922
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	34,432	29,323	24,429
Stock-based compensation expense	70,197	55,530	46,475
Change in deferred income tax provision	(58,614)	(1,420)	(324)
Amortization of right-of-use assets	6,764	6,512	6,587
Impairment of operating lease right-of-use asset	0	1,149	0
Other non-cash adjustments	253	754	137
Changes in assets and liabilities:
Accounts receivable, net	(10,355)	(14,159)	(12,013)
Inventories, net	11,549	(42,781)	(2,995)
Prepaid expenses and other assets	(6,001)	(6,276)	1,918
Accounts payable	(7,549)	7,439	7,046
Accrued liabilities	(12,664)	21,409	(2,907)
Accrued payroll obligations	(10,005)	8,903	9,692
Operating lease liabilities, current and long-term portions	(7,480)	(6,459)	(6,245)
Net cash provided by (used in) operating activities	269,588	238,806	167,722
Cash flows from investing activities:
Capital expenditures	(20,098)	(23,338)	(9,835)
Cash paid for software and intellectual property licenses	(13,152)	(11,594)	(11,862)
Cash paid for business acquisition, net of cash acquired	0	0	(68,099)
Net cash provided by (used in) investing activities	(33,250)	(34,932)	(89,796)
Cash flows from financing activities:
Restricted stock unit tax withholdings	(52,078)	(54,946)	(54,191)
Proceeds from issuance of common stock	8,365	7,159	8,827
Repurchase of common stock	(80,004)	(110,132)	(70,124)
Proceeds from long-term debt, net of issuance costs	0	148,597	0
Repayment of long-term debt	(130,000)	(178,750)	(13,125)
Net cash provided by (used in) financing activities	(253,717)	(188,072)	(128,613)
Effect of exchange rate change on cash	(26)	(1,650)	(75)
Net increase (decrease) in cash and cash equivalents	(17,405)	14,152	(50,762)
Beginning cash and cash equivalents	145,722	131,570	182,332
Ending cash and cash equivalents	128,317	145,722	131,570
Supplemental disclosure of cash flow information and non-cash investing and financing activities:
Interest paid	3,240	3,973	2,313
Income taxes paid, net of refunds	15,754	4,621	3,304
Operating lease payments	8,344	7,419	7,639
Accrued purchases of plant and equipment	392	1,357	1,360
Operating lease right-of-use assets obtained in exchange for lease obligations	$ 3,718	$ 2,134	$ 8,134

Note 12 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Intangible assets	$ 4,274	$ 6,264
Net operating loss carry forwards	13,829	15,362
Tax credit carry forwards	87,955	103,092
Accrued liabilities and reserves	23,249	12,932
Stock-based and deferred compensation	5,199	3,769
Other	5,162	5,031
Total deferred tax assets	139,668	146,450
Less: valuation allowance	(79,100)	(140,533)
Net deferred tax assets	60,568	5,917
Fixed assets	1,475	2,058
Unremitted earnings	620	2,498
Other	6,889	8,134
Total deferred tax liabilities	8,984	12,690
Net deferred taxes	51,584	6,773
Net deferred taxes	(51,584)	(6,773)
Deferred tax assets	60,568	5,917
Deferred tax liabilities (included in Other long-term liabilities)	(8,984)	(12,690)
Net deferred taxes	51,584	6,773
Net deferred taxes	(51,584)	(6,773)
Other Noncurrent Assets [Member]
Net deferred tax assets	57,762	1,022
Deferred tax assets	57,762	1,022
Other Noncurrent Liabilities [Member]
Total deferred tax liabilities	6,178	7,795
Deferred tax liabilities (included in Other long-term liabilities)	$ (6,178)	$ (7,795)

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Net income	$ 259,061	$ 178,882	$ 95,922
Other comprehensive income (loss):
Translation adjustment	(16)	(1,554)	(75)
Change in actuarial valuation of defined benefit pension, net of tax	(476)	591	372
Comprehensive income	$ 258,569	$ 177,919	$ 96,219

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

Note 12 - Income Taxes

12 Months Ended

Dec. 30, 2023

Income Tax Disclosure [Text Block]

Note 12 - Income Taxes

We are subject to federal and state income tax as well as income tax in the various foreign jurisdictions in which we operate.

The domestic and foreign components of Income before income taxes were as follows:

	Year Ended
	December 30,		December 31,		January 1,
(In thousands)	2023		2022		2022
Domestic	$	55,069	$	30,362	$	24,003
Foreign		159,787		151,750		73,623
Income before taxes	$	214,856	$	182,112	$	97,626

The components of Income tax (benefit) expense are as follows:

	Year Ended
	December 30,			December 31,			January 1,
(In thousands)	2023			2022			2022
Current:
Federal	$	10,331		$	748		$	445
State		1,059			265			45
Foreign		3,019			3,637			1,538
		14,409			4,650			2,028
Deferred:
Federal		(56,323	)		—			—
State		—			—			—
Foreign		(2,291	)		(1,420	)		(324	)
		(58,614	)		(1,420	)		(324	)
Income tax (benefit) expense	$	(44,205	)	$	3,230		$	1,704

Income tax (benefit) expense differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to pretax income as a result of the following differences:

	*Year Ended*
	*December 30,*	*December 31,*	*January 1,*
	*2023*	*2022*	*2022*
	%	%	%
Statutory federal rate	21	21	21
Adjustments for tax effects of:
State taxes, net	(1)	(2)	(4)
Federal tax credits	(4)	(1)	(3)
Excess tax benefit from stock-based compensation	(2)	—	(8)
Foreign rate differential	(15)	(16)	(14)
U.S. tax on foreign operations	9	33	3
Capital loss expiration	—	1	3
Valuation allowance	(29)	(33)	8
Change in uncertain tax benefit accrual	—	(2)	(5)
Other	—	1	1
Effective income tax rate	(21)	2	2

We updated our evaluation of the valuation allowance position in the United States through December 30, 2023. In making this evaluation, we considered our operating environment and estimates about our ability to generate taxable income in future periods within the United States. As a result of our consistent and continued profitability over the preceding three-year period and our expectations about generating sufficient U.S. Federal taxable income, we have determined that there is sufficient evidence that our U.S. Federal deferred tax assets are more likely than not to be realized. In the fourth quarter of fiscal 2023, we reduced the valuation allowance against a significant portion of our U.S. deferred tax assets resulting in the inclusion of $56.9 million of U.S. Federal deferred tax assets on our Consolidated Balance Sheets.

We continue to maintain a full valuation allowance against our state deferred tax assets due to insufficient income sources. We will continue to evaluate both positive and negative evidence in future periods to determine if we will realize the deferred tax assets. We do not maintain a valuation allowance in any foreign jurisdictions as we have concluded it is more likely than not that we will realize those net deferred tax assets in future periods.

The components of our net deferred tax assets and liabilities are as follows:

(In thousands)	*December 30, 2023*			*December 31, 2022*
Deferred tax assets:
Intangible assets	$	4,274		$	6,264
Net operating loss carry forwards		13,829			15,362
Tax credit carry forwards		87,955			103,092
Accrued liabilities and reserves		23,249			12,932
Stock-based and deferred compensation		5,199			3,769
Other		5,162			5,031
Total deferred tax assets		139,668			146,450
Less: valuation allowance		(79,100	)		(140,533	)
Net deferred tax assets		60,568			5,917
Deferred tax liabilities:
Fixed assets		1,475			2,058
Unremitted earnings		620			2,498
Other		6,889			8,134
Total deferred tax liabilities		8,984			12,690
Net deferred taxes	$	51,584		$	(6,773	)

Reported as:
Deferred tax assets	$	57,762		$	1,022
Deferred tax liabilities (included in Other long-term liabilities)		(6,178	)		(7,795	)
Net deferred taxes	$	51,584		$	(6,773	)

The following table displays the activity related to changes in our valuation allowance for deferred tax assets:

Fiscal Years Ended	*Balance at beginning*		*Charged (Credit) to costs and*			*Charged (credit) to other*		*Balance at end of*
(In thousands)	*of period*		*expenses*			*accounts*		*period*
December 30, 2023	$	140,533	$	(61,433	)	$	—	$	79,100
December 31, 2022	$	200,438	$	(59,905	)	$	—	$	140,533
January 1, 2022	$	192,478	$	7,960		$	—	$	200,438

At December 30, 2023, we had U.S. federal net operating loss ("NOL") carryforwards (pretax) of approximately $8.0 million which will expire between 2027 and 2028. We had state NOL carryforwards (pretax) of approximately $134.5 million that substantially all expire at various dates from 2024 through 2041. We also had federal credit carryforwards of $45.0 million that expire at various dates from 2033 through 2043, and $78.9 million state credit carryforwards, of which substantially all do not expire.

Future utilization of federal and state net operating losses and tax credit carry forwards may be limited if cumulative changes to ownership exceed 50% within any three-year period. However, if there is a significant change in ownership, future tax attribute utilization may be limited and NOL carryforwards and/or R&D credits will be reduced to reflect the limitation.

Foreign earnings may be subject to withholding taxes in local jurisdictions if they are distributed. At December 30, 2023, U.S. income taxes and foreign withholding taxes were not provided for on a cumulative total of approximately $3.0 million of the undistributed earnings of our foreign subsidiaries. We intend to reinvest these earnings indefinitely.

At December 30, 2023 and December 31, 2022, our unrecognized tax benefits associated with uncertain tax positions were $61.4 million and $58.9 million, respectively, of which $58.7 million and $56.3 million, respectively, if recognized, would affect the effective tax rate, subject to valuation allowance. As of December 30, 2023 and December 31, 2022, interest and penalties associated with unrecognized tax benefits were $11.3 million and $10.6 million, respectively, which are not reflected in the table below. We accrue interest and penalties related to uncertain tax positions in Income tax expense.

The following table summarizes the changes to unrecognized tax benefits for the fiscal years presented:

	(In thousands)
Balance at January 2, 2021	$	55,737
Additions based on tax positions related to the current year		1,156
Additions based on tax positions of prior years		1,130
Additions due to acquisition		977
Settlements		(51	)
Reduction as a result of lapse of applicable statute of limitations		(2,718	)
Balance at January 1, 2022		56,231
Additions based on tax positions related to the current year		1,594
Additions based on tax positions of prior years		2,798
Settlements		(148	)
Reduction as a result of lapse of applicable statute of limitations		(1,586	)
Balance at December 31, 2022		58,889
Additions based on tax positions related to the current year		2,247
Additions based on tax positions of prior years		1,128
Reductions for tax positions of prior years		(156	)
Reduction as a result of lapse of applicable statute of limitations		(696	)
Balance at December 30, 2023	$	61,412

Our liability for uncertain tax positions (including penalties and interest) was $21.9 million and $21.6 million at December 30, 2023 and December 31, 2022, respectively, and is recorded as a component of Other long-term liabilities on our Consolidated Balance Sheets.

At December 30, 2023, it is reasonably possible that $0.3 million of unrecognized tax benefits and $0.1 million of associated interest and penalties could be recognized during the next twelve months.

The years that remain subject to examination are 2017 for federal income taxes, 2019 for state income taxes, and 2017 for foreign income taxes, including years ending thereafter. However, to the extent allowed by law, the tax authorities may have the right to examine prior periods where net operating losses or tax credits were generated and carried forward, and make adjustments up to the amount of the net operating losses or credit carryforward amount.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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Note 8 - Restructuring

12 Months Ended

Dec. 30, 2023

Restructuring and Related Activities Disclosure [Text Block]

Note 8 - Restructuring

In the third quarter of 2023, our management approved and executed an internal restructuring plan (the “Q3 2023 Plan”), which included a targeted workforce reduction intended to reorganize critical roles and focus skillsets in key growth markets. We incurred restructuring costs of approximately $2.0 million in fiscal 2023. Under this plan, approximately $2.0 million of total costs have been incurred through December 30, 2023. The Q3 2023 plan is expected to be largely complete by the end of fiscal year 2024.

In September 2022, our management approved and implemented additional contract cancellations and workforce reductions under the Q2 2019 Sales Plan, an internal restructuring plan that our management approved and executed in April 2019. The Q2 2019 Sales Plan focused on a restructuring of the global sales organization through cancellation of certain contracts and a workforce reduction. Under the Q2 2019 Sales Plan, we incurred no restructuring costs in fiscal 2023, approximately $1.0 million of incremental restructuring costs in fiscal 2022, and no restructuring costs in fiscal 2021. Under this plan, approximately $3.1 million of total expense has been incurred through December 30, 2023. All actions planned under the Q2 2019 Sales Plan have been implemented.

In June 2017, our Board of Directors approved an internal restructuring plan (the "June 2017 Plan"), which included actions, among others, to reconfigure our use of certain leased properties. Under the June 2017 Plan, we incurred restructuring costs of approximately $0.1 million in fiscal 2023, approximately $1.6 million in fiscal 2022 (which includes approximately $1.1 million of incremental restructuring costs in fiscal 2022 related to an impairment of the operating lease right-of-use asset for our partially vacated facility in San Jose, California), and approximately $0.7 million in fiscal 2021. Under this plan, we have incurred approximately $23.3 million of total expense through December 30, 2023. All actions planned under the June 2017 Plan have been implemented.

These costs, and adjustments on previous plans, are recorded to Restructuring on our Consolidated Statements of Operations. The restructuring accrual balance is presented in Accrued liabilities and in Other long-term liabilities on our Consolidated Balance Sheets.

The following table displays the activity related to our restructuring plans:

(In thousands)	*Severance & Related (1)*			*Lease Termination & Fixed Assets*			*Other (2)*			*Total*
Accrued Restructuring at January 2, 2021	$	246		$	8,233		$	664		$	9,143
Restructuring		250			690			—			940
Costs paid or otherwise settled		(245	)		(1,793	)		(664	)		(2,702	)
Accrued Restructuring at January 1, 2022	$	251		$	7,130		$	—		$	7,381
Restructuring		303			1,608			640			2,551
Costs paid or otherwise settled		(154	)		(2,846	)		—			(3,000	)
Accrued Restructuring at December 31, 2022	$	400		$	5,892		$	640		$	6,932
Restructuring		1,848			56			4			1,908
Costs paid or otherwise settled		(758	)		(1,440	)		(24	)		(2,222	)
Accrued Restructuring at December 30, 2023	$	1,490		$	4,508		$	620		$	6,618

	(1)	Includes employee relocation costs and outplacement costs
	(2)	Includes termination fees on the cancellation of certain contracts

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Revenue	$ 737,154	$ 660,356	$ 515,327
Cost of revenue	222,484	208,306	193,652
Gross margin	514,670	452,050	321,675
Operating expenses:
Research and development	159,770	135,767	110,518
Selling, general, and administrative	137,244	122,076	105,617
Amortization of acquired intangible assets	3,478	3,778	2,613
Restructuring	1,908	2,551	940
Acquisition related	0	511	1,171
Total operating expenses	302,400	264,683	220,859
Income from operations	212,270	187,367	100,816
Interest income (expense), net	2,041	(4,146)	(2,738)
Other income (expense), net	545	(1,109)	(452)
Income before income taxes	214,856	182,112	97,626
Income tax (benefit) expense	(44,205)	3,230	1,704
Net income	$ 259,061	$ 178,882	$ 95,922
Net income per share:
Basic (in dollars per share)	$ 1.88	$ 1.3	$ 0.7
Diluted (in dollars per share)	$ 1.85	$ 1.27	$ 0.67
Shares used in per share calculations:
Basic (in shares)	137,694	137,321	136,619
Diluted (in shares)	139,790	140,667	142,143

Note 12 - Income Taxes - Unrecognized Tax Benefits Excluding Amounts Pertaining To Examined Tax Returns Roll Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Balance	$ 58,889	$ 56,231	$ 55,737
Additions based on tax positions related to the current year	2,247	1,594	1,156
Additions based on tax positions of prior years	1,128	2,798	1,130
Additions due to acquisition			977
Settlements		(148)	(51)
Reduction as a result of lapse of applicable statute of limitations	(696)	(1,586)	(2,718)
Reductions for tax positions of prior years	(156)
Balance	$ 61,412	$ 58,889	$ 56,231

Note 7 - Long-term Debt - Fair Value of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022	Dec. 30, 2022
Principal amount	$ 0		$ 130,000
Unamortized original issuance discount and debt costs	0		(1,248)
Long-term debt, net of unamortized debt issue costs	$ 0	$ 128,752	$ 128,752

Note 9 - Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
2024	$ 6,502
2025	5,049
2026	3,412
2027	1,750
2028	1,235
Thereafter	201
Total lease payments	18,149
Less: amount representing interest	(1,839)
Total lease liabilities	$ 16,310	$ 20,072

Note 6 - Intangible Assets - Finite Lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 30, 2022
Intangible Assets, gross	$ 165,848	$ 165,392
Accumulated Amortization	(144,874)	(140,322)
Intangible Assets, net	$ 20,974	$ 25,070
Existing Technology [Member]
Weighted Average Amortization (Year)	5 years 1 month 6 days	5 years 1 month 6 days
Intangible Assets, gross	$ 124,487	$ 124,487
Accumulated Amortization	(115,085)	(113,157)
Intangible Assets, net	$ 9,402	$ 11,330
Customer Relationships [Member]
Weighted Average Amortization (Year)	6 years 1 month 6 days	6 years 1 month 6 days
Intangible Assets, gross	$ 32,734	$ 32,734
Accumulated Amortization	(25,909)	(24,509)
Intangible Assets, net	$ 6,825	$ 8,225
Trademarks and Trade Names [Member]
Weighted Average Amortization (Year)	10 years	10 years
Intangible Assets, gross	$ 1,500	$ 1,500
Accumulated Amortization	(319)	(169)
Intangible Assets, net	$ 1,181	$ 1,331
Licensed Technology [Member]
Weighted Average Amortization (Year)	6 years 2 months 12 days	6 years 3 months 18 days
Intangible Assets, gross	$ 7,127	$ 6,671
Accumulated Amortization	(3,561)	(2,487)
Intangible Assets, net	$ 3,566	$ 4,184

Note 5 - Property and Equipment

12 Months Ended

Dec. 30, 2023

Property, Plant and Equipment Disclosure [Text Block]

Note 5 - Property and Equipment

	*December 30,*			*December 31,*
(In thousands)	*2023*			*2022*
Production equipment and software	$	159,950		$	149,787
Leasehold improvements		13,519			12,416
Office furniture and equipment		1,933			1,760
		175,402			163,963
Accumulated depreciation and amortization		(125,856	)		(116,349	)
Total property and equipment, net	$	49,546		$	47,614

For fiscal years 2023, 2022, and 2021 depreciation and amortization expense for property and equipment was $17.3 million, $13.8 million, and $12.0 million, respectively.

Property and Equipment – Geographic Information

Our Property and equipment, net by country at the end of each period was as follows:

	*December 30,*		*December 31,*
(In thousands)	*2023*		*2022*
United States	$	29,467	$	29,118

Taiwan		10,222		10,732
Philippines		4,602		3,596
China		2,778		2,229
Other		2,477		1,939
Total foreign property and equipment, net		20,079		18,496
Total property and equipment, net	$	49,546	$	47,614

Note 2 - Net Income Per Share

12 Months Ended

Dec. 30, 2023

Earnings Per Share [Text Block]

Note 2 - Net Income Per Share

Our calculation of the diluted share count includes the number of shares from our equity awards with market conditions or performance conditions that would be issuable under the terms of such awards at the end of the reporting period. For equity awards with a market condition, the number of shares included in the diluted share count as of the end of each period presented is determined by measuring the achievement of the market condition as of the end of the respective reporting periods. For equity awards with a performance condition, the number of shares that qualified for vesting as of the end of each period presented are included in the diluted share count when the condition for their issuance was satisfied by the end of the respective reporting periods. See "Note 10 - Stock-Based Compensation Plans" for further discussion of our equity awards with market or performance conditions.

A summary of basic and diluted Net income per share is presented in the following table:

	*Year Ended*
	*December 30,*		*December 31,*		*January 1,*
(In thousands, except per share data)	*2023*		*2022*		*2022*
Net income	$	259,061	$	178,882	$	95,922

Shares used in basic Net income per share		137,694		137,321		136,619
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition		2,096		3,346		5,524
Shares used in diluted Net income per share		139,790		140,667		142,143

Basic Net income per share	$	1.88	$	1.30	$	0.70
Diluted Net income per share	$	1.85	$	1.27	$	0.67

The computation of diluted Net income per share excludes the effects of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition that are antidilutive, aggregating to approximately the following number of shares:

Year Ended

December 30,

December 31,

January 1,

(In thousands)

2023

2022

Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive

376

472

638

Note 14 - Contingencies

12 Months Ended

Dec. 30, 2023

Contingencies Disclosure [Text Block]

Note 14 - Contingencies

Legal Proceedings

On or about December 19, 2018, Steven A.W. De Jaray, Perienne De Jaray and Darrell R. Oswald (collectively, the “Plaintiffs”) commenced an action against the Company and several unnamed defendants in the Multnomah County Circuit Court of the State of Oregon, in connection with the sale of certain products by the Company to the Plaintiffs in or around 2008. The Plaintiffs alleged that we violated the Lanham Act, engaged in negligence, fraud, and breach of contract by failing to disclose to the Plaintiffs the export-controlled status of the subject parts. In January 2019, we removed the action to the United States District Court for the District of Oregon (the “Court”). On May 24, 2023, the Plaintiffs filed a second amended complaint, which added Apex-Micro Manufacturing Corporation as a plaintiff and removed the violation of the Lanham Act claim. The Plaintiffs sought damages of $180 million, punitive damages, and other remedies. On January 18, 2024, the court dismissed the claims against the Company by Perienne De Jaray and Darrell R. Oswald. The trial for the remainder of the claims was held from January 30, 2024 to February 15, 2024. On February 13, 2024, after both parties rested their cases and prior to the submission of the case to the jury, the Company filed a Rule 50 motion for judgment as a matter of law as to all remaining claims due to insufficient evidence to support the claims. The Court granted the Company’s Rule 50 motion in part and entered judgment in the Company’s favor as to all of Steven De Jaray’s claims and Apex-Micro Manufacturing Corporation’s negligence claims. On February 15, 2023, the jury found that the Company was not liable for all outstanding claims and the presiding judge stated he would enter the judgment in favor of the Company.

From time to time, we are exposed to certain additional asserted and unasserted potential claims. We review the status of each significant matter and assess its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and a range of possible losses can be estimated, we then accrue a liability for the estimated loss. Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict. Because of such uncertainties, accruals are based only on the best information available at the time. As additional information becomes available, we reassess the potential liability related to pending claims and litigation and may revise estimates.

The entire disclosure for loss and gain contingencies. Describes any existing condition, situation, or set of circumstances involving uncertainty as of the balance sheet date (or prior to issuance of the financial statements) as to a probable or reasonably possible loss incurred by an entity that will ultimately be resolved when one or more future events occur or fail to occur, and typically discloses the amount of loss recorded or a range of possible loss, or an assertion that no reasonable estimate can be made.

+ References + Details

Note 5 - Property and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Property and Equipment	$ 175,402	$ 163,963
Accumulated depreciation and amortization	(125,856)	(116,349)
Total property and equipment, net	49,546	47,614
Property, Plant and Equipment, Net	49,546	47,614
UNITED STATES
Total property and equipment, net	29,467	29,118
Property, Plant and Equipment, Net	29,467	29,118
TAIWAN
Total property and equipment, net	10,222	10,732
Property, Plant and Equipment, Net	10,222	10,732
PHILIPPINES
Total property and equipment, net	4,602	3,596
Property, Plant and Equipment, Net	4,602	3,596
CHINA
Total property and equipment, net	2,778	2,229
Property, Plant and Equipment, Net	2,778	2,229
Other [Member]
Total property and equipment, net	2,477	1,939
Property, Plant and Equipment, Net	2,477	1,939
Foreign Countries [Member]
Total property and equipment, net	20,079	18,496
Property, Plant and Equipment, Net	20,079	18,496
Production Equipment and Software [Member]
Property and Equipment	159,950	149,787
Leasehold Improvements [Member]
Property and Equipment	13,519	12,416
Office Equipment [Member]
Property and Equipment	$ 1,933	$ 1,760

Note 6 - Intangible Assets - Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Amortization of intangible assets	$ 4,552	$ 4,832	$ 3,514
Research and Development Expense [Member]
Amortization of intangible assets	1,074	1,054	901
Amortization of Acquired Intangible Assets [Member]
Amortization of intangible assets	$ 3,478	$ 3,778	$ 2,613

Note 13 - Employee Benefit Plans (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 3.1	$ 2.8	$ 2.6
Labor And Related Expense, Incentive Compensation	$ 15.0	$ 25.2	$ 18.0

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Jan. 02, 2021	136,236,000
Balances at Jan. 02, 2021	$ 1,362	$ 770,711	$ (385,898)	$ (1,748)	$ 384,427
Net income	0	0	95,922	0	95,922
Other comprehensive income (loss)	0	0	0	297	297
Total comprehensive income					96,219
Common stock issued in connection with employee equity incentive plans, net of shares withheld for employee taxes (in shares)	2,270,000
Common stock issued in connection with employee equity incentive plans, net of shares withheld for employee taxes	$ 23	(45,387)	0	0	(45,364)
Stock-based compensation expense	$ 0	46,475	0	0	46,475
Repurchase of common stock (in shares)	(1,267,000)
Repurchase of common stock	$ (13)	(70,111)	0	0	(70,124)
Total comprehensive income					96,219
Balances (in shares) at Jan. 01, 2022	137,239,000
Balances at Jan. 01, 2022	$ 1,372	701,688	(289,976)	(1,451)	411,633
Net income	0	0	178,882	0	178,882
Other comprehensive income (loss)	0	0	0	(963)	(963)
Total comprehensive income					177,919
Common stock issued in connection with employee equity incentive plans, net of shares withheld for employee taxes (in shares)	1,812,000
Common stock issued in connection with employee equity incentive plans, net of shares withheld for employee taxes	$ 18	(47,806)	0	0	(47,788)
Stock-based compensation expense	$ 0	55,530	0	0	55,530
Repurchase of common stock (in shares)	(1,952,000)
Repurchase of common stock	$ (19)	(110,112)	0	0	(110,131)
Total comprehensive income					$ 177,919
Balances (in shares) at Dec. 31, 2022	137,099,000				137,099,000
Balances at Dec. 31, 2022	$ 1,371	599,300	(111,094)	(2,414)	$ 487,163
Net income	0	0	259,061	0	259,061
Other comprehensive income (loss)	0	0	0	(492)	(492)
Total comprehensive income					258,569
Common stock issued in connection with employee equity incentive plans, net of shares withheld for employee taxes (in shares)	1,465,000
Common stock issued in connection with employee equity incentive plans, net of shares withheld for employee taxes	$ 14	(43,727)	0	0	(43,713)
Stock-based compensation expense	$ 0	70,197	0	0	70,197
Repurchase of common stock (in shares)	(1,224,000)
Repurchase of common stock	$ (12)	(80,184)	0	0	(80,196)
Total comprehensive income					$ 258,569
Balances (in shares) at Dec. 30, 2023	137,340,000				137,340,000
Balances at Dec. 30, 2023	$ 1,373	$ 545,586	$ 147,967	$ (2,906)	$ 692,020

Note 8 - Restructuring (Tables)

12 Months Ended

Dec. 30, 2023

Schedule of Restructuring Reserve by Type of Cost [Table Text Block]

(In thousands)	*Severance & Related (1)*			*Lease Termination & Fixed Assets*			*Other (2)*			*Total*
Accrued Restructuring at January 2, 2021	$	246		$	8,233		$	664		$	9,143
Restructuring		250			690			—			940
Costs paid or otherwise settled		(245	)		(1,793	)		(664	)		(2,702	)
Accrued Restructuring at January 1, 2022	$	251		$	7,130		$	—		$	7,381
Restructuring		303			1,608			640			2,551
Costs paid or otherwise settled		(154	)		(2,846	)		—			(3,000	)
Accrued Restructuring at December 31, 2022	$	400		$	5,892		$	640		$	6,932
Restructuring		1,848			56			4			1,908
Costs paid or otherwise settled		(758	)		(1,440	)		(24	)		(2,222	)
Accrued Restructuring at December 30, 2023	$	1,490		$	4,508		$	620		$	6,618

Note 10 - Stock-Based Compensation Plans - Schedule of Nonvested Restricted Stock Units Activity (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 24,380,000	$ 15,250,000	$ 13,040,000.00
Restricted Stock Units (RSUs) [Member]
Balance (in shares)	1,821
Balance (in dollars per share)	$ 50.18
Granted (in shares)	995
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 84.8
Vested (in shares)	(880)
Vested (in dollars per share)	$ 41.63
Forfeited or expired (in shares)	(55)
Forfeited or expired (in dollars per share)	$ 56.69
Balance (in shares)	1,881	1,821
Balance (in dollars per share)	$ 72.31	$ 50.18

Note 10 - Stock-based Compensation - Stock-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Total stock-based compensation	$ 70,197	$ 55,530	$ 46,475
Cost of Sales [Member]
Total stock-based compensation	4,506	3,674	3,049
Research and Development Expense [Member]
Total stock-based compensation	27,782	19,645	14,563
Selling, General and Administrative Expenses [Member]
Total stock-based compensation	$ 37,909	$ 32,211	$ 28,863

Note 13 - Employee Benefit Plans

12 Months Ended

Dec. 30, 2023

Compensation and Employee Benefit Plans [Text Block]

Note 13 - Employee Benefit Plans

Qualified Investment Plan

In 1990, we adopted a 401(k) tax-deferred savings plan, which provides all employees in the United States who meet certain eligibility requirements with an opportunity to accumulate funds for retirement. Participants may contribute up to the amount allowable as a deduction for federal income tax purposes. The plan does not allow investments in the Company's common stock. The plan allows for the Company to make discretionary matching contributions in cash. We recorded matching contributions of approximately $3.1 million, $2.8 million, and $2.6 million in fiscal years 2023, 2022, and 2021, respectively.

Cash Incentive Plans

For 2023, 2022, and 2021, the Board of Directors of the Company, upon the recommendation of the Compensation Committee, approved the Cash Incentive Plan (the “Cash Plans”) for the respective fiscal year. The chief executive officer, other executive officers, and other members of senior management, including vice presidents and director-level employees, together with all other employees of the Company not on the Company's sales incentive plan are eligible to participate in the Cash Plans. Under the Cash Plans, individual cash incentive payments for the eligible employees will be based both on Company financial performance, as measured by achievement of operating income (before incentive plan accruals) and revenue goals within specified ranges established by the Compensation Committee, and Company performance, as measured by the achievement of personal management objectives. The Compensation Committee determines the performance of the chief executive officer, the chief financial officer and other participants based on the achievement of the management objectives established by the Compensation Committee during the first quarter of the respective fiscal year. We recorded approximately $15.0 million, $25.2 million, and $18.0 million of expense under the Cash Plans in fiscal 2023, 2022, and 2021, respectively.

Note 10 - Stock-Based Compensation Plans (Details Textual) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares	Jan. 01, 2022 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Share-Based Payment Arrangement, Expense, Tax Benefit	$ 7,600
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) \| $ / shares	$ 24,380,000	$ 15,250,000	$ 13,040,000.00
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 0
Share-Based Payment Arrangement, Expense	70,197	$ 55,530	$ 46,475
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value	37,300	24,300	44,700
Awards Vested or Exercised [Member]
Share-Based Payment Arrangement, Exercise and Vesting of Awards, Tax Benefit	10,400
Awards with Market Condition or Performance Condition [Member]
Share-Based Payment Arrangement, Expense	2,200	1,500	1,200
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Expense	$ 0		1,000
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) \| $ / shares	$ 84.8
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 27,300
Restricted Stock Units (RSUs) [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 121,300
Share-Based Payment Arrangement, Expense	$ 41,500	$ 30,100	$ 21,700
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved	75.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved	75.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Share-Based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions	100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved	55.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Share-Based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved	25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions			250.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Minimum [Member] \| TSR Relative To PHLX Semiconductor Sector Index, 75th Percentile [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions	250.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Minimum [Member] \| Share-Based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved	25.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions	200.00%		200.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Maximum [Member] \| TSR Relative To PHLX Semiconductor Sector Index, 75th Percentile [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions	200.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Maximum [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved	250.00%	250.00%
Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member] \| Maximum [Member] \| Share-Based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved	75.00%
Performance Shares [Member] \| Share-Based Payment Arrangement, Tranche Five [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		40.00%
Performance Shares [Member] \| Share-Based Payment Arrangement, Tranche Six [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		70.00%
Performance Shares [Member] \| Executive Officer [Member]
Share-Based Payment Arrangement, Expense	$ 26,400	$ 24,000	$ 22,100
Performance Shares [Member] \| Executive Officer [Member] \| Minimum [Member] \| TSR Relative To PHLX Semiconductor Sector Index, 75th Percentile [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions	116.30%
Performance Shares [Member] \| Executive Officer [Member] \| Maximum [Member] \| TSR Relative To PHLX Semiconductor Sector Index, 75th Percentile [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions		200.00%
Performance Shares Granted in 2018 [Member] \| Executive Officer [Member] \| Minimum [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions	200.00%	200.00%
The 2013 Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) \| shares	0
The2012 ESPP [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) \| shares	900
Share-based Compensation Arrangement By Share-based Payment Award, Maximum, Annual Contribution Per Employee, Percent	10.00%
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
The 2011 Non-Employee Director Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) \| shares	11,700
Share-based Compensation Arrangement by Share-based Payment Award, Share Ratio	2,011

Note 3 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Dec. 31, 2022	Jan. 01, 2022
Revenue	$ 737,154	$ 660,356	$ 660,356	$ 515,327
Percentage of revenue	100.00%	100.00%		100.00%
CHINA
Revenue	$ 239,192	$ 296,917		$ 281,237
Percentage of revenue	32.00%	45.00%		55.00%
JAPAN
Revenue	$ 110,403	$ 90,902		$ 47,915
Percentage of revenue	15.00%	14.00%		9.00%
Other Asia [Member]
Revenue	$ 94,170	$ 77,085		$ 55,416
Percentage of revenue	13.00%	12.00%		10.00%
Asia [Member]
Revenue	$ 443,765	$ 464,904		$ 384,568
Percentage of revenue	60.00%	71.00%		74.00%
Americas [Member]
Revenue	$ 145,839	$ 100,260		$ 80,870
Percentage of revenue	20.00%	15.00%		16.00%
Europe [Member]
Revenue	$ 147,550	$ 95,192		$ 49,889
Percentage of revenue	20.00%	14.00%		10.00%
Product [Member] \| Sales Channel, Through Intermediary [Member]
Revenue	$ 644,181	$ 591,229		$ 449,650
Percentage of revenue	87.00%	89.00%		87.00%
Product [Member] \| Sales Channel, Directly to Consumer [Member]
Revenue	$ 92,973	$ 69,127		$ 65,677
Percentage of revenue	13.00%	11.00%		13.00%

Note 10 - Stock-Based Compensation Plans - Assumptions Used at Grant Date In the Valuation of RUSs (Details) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Weighted average expected volatility		51.44%
Weighted average risk-free interest rate		1.67%
Expected term (years) (Year)	3 years	3 years
Minimum [Member]
Weighted average expected volatility	50.97%		50.37%
Weighted average risk-free interest rate	4.28%		0.22%
Expected term (years) (Year)			3 years
Maximum [Member]
Weighted average expected volatility	54.31%		52.11%
Weighted average risk-free interest rate	4.59%		0.77%
Expected term (years) (Year)			5 years

Note 12 - Income Taxes - Components of Income Tax Expense Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Federal	$ 10,331	$ 748	$ 445
State	1,059	265	45
Foreign	3,019	3,637	1,538
Current Income Tax Expense (Benefit)	14,409	4,650	2,028
Federal	(56,323)	0	0
State	0	0	0
Foreign	(2,291)	(1,420)	(324)
Deferred Income Tax Expense (Benefit)	(58,614)	(1,420)	(324)
Income tax (benefit) expense	$ (44,205)	$ 3,230	$ 1,704

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Note 1 - Basis of Presentation and Significant Accounting Policies - Concentration of Risk By Risk (Details) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Arrow Electronics Inc [Member]
Revenue Percentage	32.00%	28.00%	27.00%
Weikeng Group [Member]
Revenue Percentage	21.00%	30.00%	37.00%
Future Group [Member]
Revenue Percentage	13.00%	8.00%	6.00%
Macnica Group [Member]
Revenue Percentage	11.00%	10.00%	7.00%
Other [Member]
Revenue Percentage	10.00%	13.00%	10.00%
Distributors [Member]
Revenue Percentage	87.00%	89.00%	87.00%

Note 12 - Income Taxes - Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Balance	$ 140,533	$ 200,438	$ 192,478
Charged (Credit) to costs and expenses	(61,433)	(59,905)	7,960
Charged (credit) to other accounts	0	0	0
Balance	79,100	140,533	200,438
Charged (credit) to other accounts	$ (0)	$ 0	$ 0

Note 8 - Restructuring - Activity Related to Restructuring Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Restructuring	$ 1,908	$ 2,551	$ 940
Employee Severance [Member]
Accrued Restructuring	400	251	246
Restructuring	1,848	303	250
Costs paid or otherwise settled	(758)	(154)	(245)
Accrued Restructuring	1,490	400	251
Lease Termination and Fixed Assets [Member]
Accrued Restructuring	5,892	7,130	8,233
Restructuring	56	1,608	690
Costs paid or otherwise settled	(1,440)	(2,846)	(1,793)
Accrued Restructuring	4,508	5,892	7,130
Software Contracts and Engineering Tools [Member]
Accrued Restructuring	640	0	664
Restructuring	4	640	0
Costs paid or otherwise settled	(24)	0	(664)
Accrued Restructuring	620	640	0
Other Restructuring [Member]
Accrued Restructuring	6,932	7,381	9,143
Restructuring	1,908	2,551	940
Costs paid or otherwise settled	(2,222)	(3,000)	(2,702)
Accrued Restructuring	$ 6,618	$ 6,932	$ 7,381

Note 12 - Income Taxes (Tables)

12 Months Ended

Dec. 30, 2023

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	Year Ended
	December 30,		December 31,		January 1,
(In thousands)	2023		2022		2022
Domestic	$	55,069	$	30,362	$	24,003
Foreign		159,787		151,750		73,623
Income before taxes	$	214,856	$	182,112	$	97,626

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Year Ended
	December 30,			December 31,			January 1,
(In thousands)	2023			2022			2022
Current:
Federal	$	10,331		$	748		$	445
State		1,059			265			45
Foreign		3,019			3,637			1,538
		14,409			4,650			2,028
Deferred:
Federal		(56,323	)		—			—
State		—			—			—
Foreign		(2,291	)		(1,420	)		(324	)
		(58,614	)		(1,420	)		(324	)
Income tax (benefit) expense	$	(44,205	)	$	3,230		$	1,704

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	*Year Ended*
	*December 30,*	*December 31,*	*January 1,*
	*2023*	*2022*	*2022*
	%	%	%
Statutory federal rate	21	21	21
Adjustments for tax effects of:
State taxes, net	(1)	(2)	(4)
Federal tax credits	(4)	(1)	(3)
Excess tax benefit from stock-based compensation	(2)	—	(8)
Foreign rate differential	(15)	(16)	(14)
U.S. tax on foreign operations	9	33	3
Capital loss expiration	—	1	3
Valuation allowance	(29)	(33)	8
Change in uncertain tax benefit accrual	—	(2)	(5)
Other	—	1	1
Effective income tax rate	(21)	2	2

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

(In thousands)	*December 30, 2023*			*December 31, 2022*
Deferred tax assets:
Intangible assets	$	4,274		$	6,264
Net operating loss carry forwards		13,829			15,362
Tax credit carry forwards		87,955			103,092
Accrued liabilities and reserves		23,249			12,932
Stock-based and deferred compensation		5,199			3,769
Other		5,162			5,031
Total deferred tax assets		139,668			146,450
Less: valuation allowance		(79,100	)		(140,533	)
Net deferred tax assets		60,568			5,917
Deferred tax liabilities:
Fixed assets		1,475			2,058
Unremitted earnings		620			2,498
Other		6,889			8,134
Total deferred tax liabilities		8,984			12,690
Net deferred taxes	$	51,584		$	(6,773	)

Reported as:
Deferred tax assets	$	57,762		$	1,022
Deferred tax liabilities (included in Other long-term liabilities)		(6,178	)		(7,795	)
Net deferred taxes	$	51,584		$	(6,773	)

Summary of Valuation Allowance [Table Text Block]

Fiscal Years Ended	*Balance at beginning*		*Charged (Credit) to costs and*			*Charged (credit) to other*		*Balance at end of*
(In thousands)	*of period*		*expenses*			*accounts*		*period*
December 30, 2023	$	140,533	$	(61,433	)	$	—	$	79,100
December 31, 2022	$	200,438	$	(59,905	)	$	—	$	140,533
January 1, 2022	$	192,478	$	7,960		$	—	$	200,438

Schedule of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Roll Forward [Table Text Block]

	(In thousands)
Balance at January 2, 2021	$	55,737
Additions based on tax positions related to the current year		1,156
Additions based on tax positions of prior years		1,130
Additions due to acquisition		977
Settlements		(51	)
Reduction as a result of lapse of applicable statute of limitations		(2,718	)
Balance at January 1, 2022		56,231
Additions based on tax positions related to the current year		1,594
Additions based on tax positions of prior years		2,798
Settlements		(148	)
Reduction as a result of lapse of applicable statute of limitations		(1,586	)
Balance at December 31, 2022		58,889
Additions based on tax positions related to the current year		2,247
Additions based on tax positions of prior years		1,128
Reductions for tax positions of prior years		(156	)
Reduction as a result of lapse of applicable statute of limitations		(696	)
Balance at December 30, 2023	$	61,412

Note 6 - Intangible Assets (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Goodwill	$ 315,358	$ 315,358
Impairment of Intangible Assets, Finite-Lived	$ 0	$ 0	$ 0