Cohu (COHU) 10-Q 1 Aug 24 2024 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 29, 2024	Jul. 24, 2024
Document Information [Line Items]
Entity Central Index Key	0000021535
Entity Registrant Name	COHU INC
Amendment Flag	false
Current Fiscal Year End Date	--12-28
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2024
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 29, 2024
Document Transition Report	false
Entity File Number	001-04298
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-1934119
Entity Address, Address Line One	12367 Crosthwaite Circle
Entity Address, City or Town	Poway
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92064-6817
City Area Code	858
Local Phone Number	848-8100
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	COHU
Security Exchange Name	NASDAQ
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
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		46,919,550

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023	[1]
Current assets:
Cash and cash equivalents	$ 203,068	$ 245,524
Short-term investments	59,329	90,174
Accounts receivable, net	103,025	124,624
Inventories	146,074	155,793
Prepaid expenses	20,062	17,696
Other current assets	14,567	5,007
Total current assets	546,125	638,818
Property, plant and equipment, net	74,907	69,085
Goodwill	237,476	241,658
Intangible assets, net	130,922	151,770
Other assets	34,706	32,243
Operating lease right of use assets	14,896	16,778
Assets	1,039,032	1,150,352
Liabilities, Current [Abstract]
Short-term borrowings	1,243	1,773
Current installments of long-term debt	1,135	4,551
Accounts payable	21,631	33,600
Customer advances	2,797	4,748
Accrued compensation and benefits	21,094	31,897
Deferred profit	3,327	3,586
Accrued warranty	3,588	4,653
Income taxes payable	2,772	4,024
Other Accrued Liabilities, Current	20,976	14,589
Total current liabilities	78,563	103,421
Long-term debt	7,592	34,303
Deferred income taxes	21,860	23,154
Noncurrent income tax liabilities	5,369	7,065
Accrued retirement benefits	10,350	10,802
Lease Liability, Noncurrent	11,408	13,175
Other accrued liabilities	7,680	8,262
Stockholders’ equity
Preferred stock, $1 par value; 1,000 shares authorized, none issued	0	0
Common stock, $1 par value; 90,000 shares authorized, 49,507 shares issued and outstanding in 2024 and 49,429 shares in 2023	49,507	49,429
Paid-in capital	685,522	686,146
Treasury stock, at cost; 2,587 shares in 2024 and 2,253 shares in 2023	(80,020)	(69,184)
Retained earnings	288,154	318,558
Accumulated other comprehensive loss	(46,953)	(34,779)
Total stockholders’ equity	896,210	950,170
Liabilities and Equity	$ 1,039,032	$ 1,150,352
[1]Derived from December 30, 2023 audited financial statements

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares shares in Thousands	Jun. 29, 2024	Dec. 30, 2023	[1]
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	1,000	1,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	90,000	90,000
Common stock, shares issued (in shares)	49,507	49,429
Common stock, shares outstanding (in shares)	49,507	49,429
Treasury Stock, Shares (in shares)	2,587	2,253
[1]Derived from December 30, 2023 audited financial statements

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Net sales		$ 104,701	$ 168,921	$ 212,315	$ 348,292
Cost and expenses:
Cost of sales (1)	[1]	57,779	88,576	116,144	181,729
Research and development		21,342	22,466	43,678	44,976
Selling, general and administrative		32,118	32,798	67,200	66,987
Amortization of purchased intangible assets		9,748	9,006	19,543	17,760
Restructuring charges		13	416	22	1,304
Costs and Expenses		121,000	153,262	246,587	312,756
Income (loss) from operations		(16,299)	15,659	(34,272)	35,536
Other (expense) income:
Interest expense		(144)	(727)	(433)	(1,855)
Interest income		2,333	2,732	5,042	5,450
Gain (Loss), Foreign Currency Transaction, before Tax		(373)	(645)	(914)	(1,085)
Loss on extinguishment of debt		0	0	(241)	(369)
Income (loss) before taxes		(14,483)	17,019	(30,818)	37,677
Income tax provision (benefit)		1,286	6,435	(414)	11,408
Net income (loss)		$ (15,769)	$ 10,584	$ (30,404)	$ 26,269
Basic (in dollars per share)		$ (0.34)	$ 0.22	$ (0.65)	$ 0.55
Diluted (in dollars per share)		$ (0.34)	$ 0.22	$ (0.65)	$ 0.55
Weighted average shares used in computing income (loss) per share:
Basic (in shares)		46,965	47,618	47,049	47,481
Diluted (in shares)		46,965	48,028	47,049	48,099
[1]Excludes amortization of $7,486 and $7,102 for the three months ended June 29, 2024 and July 1, 2023, respectively, and $15,008 and $13,993 for the six months ended June 29, 2024 and July 1, 2023, respectively.

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Operations (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Amortization of cost	$ 7,486	$ 7,102	$ 15,008	$ 13,993

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Net income (loss)	$ (15,769)	$ 10,584	$ (30,404)	$ 26,269
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(3,016)	358	(12,423)	3,059
Adjustments related to postretirement benefits	356	157	351	186
Change in unrealized gain/loss on investments	(6)	(65)	(102)	208
Other comprehensive income (loss), net of tax	(2,666)	450	(12,174)	3,453
Comprehensive income (loss)	$ (18,435)	$ 11,034	$ (42,578)	$ 29,722

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common [Member]	Total
Balance at Dec. 31, 2022	$ 49,276	$ 687,218	$ 290,402	$ (40,012)	$ (58,043)	$ 928,841
Net income (loss)	0	0	26,269	0	0	26,269
Changes in cumulative translation adjustment	0	0	0	3,059	0	3,059
Adjustments related to postretirement benefits	0	0	0	186	0	186
Changes in unrealized gains and losses on investments, net of tax	0	0	0	208	0	208
Shares issued under ESPP	67	1,837	0	0	0	1,904
Shares issued for restricted stock units vested	7	(19,225)	0	0	19,218	0
Repurchase and retirement of stock		(1,867)	0	0	(7,373)	(9,240)
Common stock repurchases	0	0	0	0	(6,180)	(6,180)
Share-based compensation expense	0	8,346	0	0	0	8,346
Balance at Jul. 01, 2023	49,350	676,309	316,671	(36,559)	(52,378)	953,393
Balance at Apr. 01, 2023	49,283	671,204	306,087	(37,009)	(50,786)	938,779
Net income (loss)	0	0	10,584	0	0	10,584
Changes in cumulative translation adjustment	0	0	0	358	0	358
Adjustments related to postretirement benefits	0	0	0	157	0	157
Changes in unrealized gains and losses on investments, net of tax	0	0	0	(65)	0	(65)
Shares issued under ESPP	67	1,837	0	0	0	1,904
Shares issued for restricted stock units vested	0	(1,158)	0	0	1,158	0
Repurchase and retirement of stock		(6)	0	0	(51)	(57)
Common stock repurchases	0	0	0	0	(2,699)	(2,699)
Share-based compensation expense	0	4,432	0	0	0	4,432
Balance at Jul. 01, 2023	49,350	676,309	316,671	(36,559)	(52,378)	953,393
Balance at Dec. 30, 2023	49,429	686,146	318,558	(34,779)	(69,184)	950,170	[1]
Net income (loss)	0	0	(30,404)	0	0	(30,404)
Changes in cumulative translation adjustment	0	0	0	(12,423)	0	(12,423)
Adjustments related to postretirement benefits	0	0	0	351	0	351
Changes in unrealized gains and losses on investments, net of tax	0	0	0	(102)	0	(102)
Shares issued under ESPP	78	1,924	0	0	0	2,002
Shares issued for restricted stock units vested	0	(12,676)	0	0	12,676	0
Repurchase and retirement of stock		(83)	0	0	(4,488)	(4,571)
Common stock repurchases	0	0	0	0	(19,024)	(19,024)
Share-based compensation expense	0	10,211	0	0	0	10,211
Balance at Jun. 29, 2024	49,507	685,522	288,154	(46,953)	(80,020)	896,210
Balance at Mar. 30, 2024	49,429	679,012	303,923	(44,287)	(72,720)	915,357
Net income (loss)	0	0	(15,769)	0	0	(15,769)
Changes in cumulative translation adjustment	0	0	0	(3,016)	0	(3,016)
Adjustments related to postretirement benefits	0	0	0	356	0	356
Changes in unrealized gains and losses on investments, net of tax	0	0	0	(6)	0	(6)
Shares issued under ESPP	78	1,924	0	0	0	2,002
Shares issued for restricted stock units vested	0	(999)	0	0	999	0
Repurchase and retirement of stock		2
Repurchase and retirement of stock			0	0	(39)	(37)
Common stock repurchases	0	0	0	0	(8,260)	(8,260)
Share-based compensation expense	0	5,583	0	0	0	5,583
Balance at Jun. 29, 2024	$ 49,507	$ 685,522	$ 288,154	$ (46,953)	$ (80,020)	$ 896,210
[1]Derived from December 30, 2023 audited financial statements

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023
Cash flows from operating activities:
Net income (loss)	$ (30,404)	$ 26,269
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Loss on extinguishment of debt	241	369
Net accretion on investments	(591)	(609)
Gain from sale of property, plant and equipment	(54)	(17)
Depreciation and amortization	26,385	24,458
Share-based compensation expense	10,211	8,346
Non-cash inventory related charges	1,980	3,215
Deferred income taxes	(1,243)	(1,489)
Changes in accrued retiree medical benefits	139	(281)
Changes in other accrued liabilities	(503)	(227)
Changes in other assets	(4,878)	(161)
Amortization of cloud-based software implementation costs	1,418	1,400
Impairment charge related to equity investment	966	0
Amortization of debt discounts and issuance costs	8	81
Operating lease right-of-use assets	3,202	3,536
Changes in assets and liabilities, excluding effects from acquisitions:
Customer advances	(1,794)	3,840
Accounts receivable	19,543	38,140
Inventories	6,022	(4,704)
Other current assets	(12,050)	1,416
Accounts payable	(11,994)	(8,781)
Deferred profit	(240)	(3,976)
Income taxes payable	(3,099)	(2,741)
Accrued compensation, warranty and other liabilities	(12,918)	(15,097)
Current and long-term operating lease liabilities	(3,215)	(3,357)
Net cash provided by (used in) operating activities	(12,868)	69,630
Cash flows from investing activities, excluding effects from acquisitions:
Purchases of short-term investments	(26,416)	(43,732)
Sales and maturities of short-term investments	57,721	90,769
Purchases of property, plant and equipment	(5,342)	(8,140)
Cash received from sale of property, plant and equipment	56	193
Net cash provided by investing activities	26,019	12,759
Cash flows from financing activities:
Payments on current and long-term finance lease liabilities	(11)	(39)
Repurchases of common stock, net	(2,568)	(7,335)
Repayments of long-term debt	(30,224)	(36,458)
Acquisition of treasury stock	(18,886)	(6,180)
Net cash used in financing activities	(51,689)	(50,012)
Effect of exchange rate changes on cash and cash equivalents	(3,918)	572
Net increase (decrease) in cash and cash equivalents	(42,456)	32,949
Cash and cash equivalents at beginning of period	245,524	242,341
Cash and cash equivalents at end of period	203,068	275,290
Supplemental disclosure of cash flow information:
Cash paid for income taxes	13,265	9,201
Inventory capitalized as property, plant and equipment	755	663
Property, plant and equipment purchases included in accounts payable	317	180
Cash paid for interest	755	2,453
MCT Worldwide, LLC [Member]
Cash flows from investing activities, excluding effects from acquisitions:
Payment for purchase of business, net of cash received	$ 0	$ (26,331)

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Significant Accounting Policies [Text Block]	1. Summary of Significant Accounting Policies Basis of Presentation Our fiscal years are based on a 52 53 December. December 30, 2023, June 29, 2024, ( second 2024” first six 2024” July 1, 2023, ( second 2023” first six 2023” three six June 29, 2024 July 1, 2023 13 26 Our interim results are not June 29, 2024 three six June 29, 2024. December 30, 2023, 2023 10 All significant intercompany transactions and balances have been eliminated in consolidation. Concentration of Credit Risk Financial instruments that potentially subject us to significant credit risk consist principally of cash equivalents, short-term investments and trade accounts receivable. We invest in a variety of financial instruments and, by policy, limit the amount of credit exposure with any one Our trade accounts receivable are presented net of an allowance for credit losses, which is determined in accordance with the guidance provided by Accounting Standards Codification (“ASC”) Topic 326, Financial Instruments-Credit Losses 326” June 29, 2024 December 30, 2023, June 29, 2024, may Inventories Inventories are stated at the lower of cost, determined on a first first Inventories by category were as follows ( in thousands June 29, December 30, 2024 2023 Raw materials and purchased parts $ 95,407 $ 103,118 Work in process 26,217 26,820 Finished goods 24,450 25,855 Total inventories $ 146,074 $ 155,793 Property, Plant and Equipment Depreciation and amortization of property, plant and equipment, both owned and under financing lease, is calculated principally on the straight‑line method based on estimated useful lives of thirty forty five fifteen three ten not (in thousands) June 29, December 30, 2024 2023 Land and land improvements $ 6,999 $ 7,301 Buildings and building improvements 46,846 39,677 Machinery and equipment 105,761 108,831 159,606 155,809 Less accumulated depreciation and amortization (84,699 ) (86,724 ) Property, plant and equipment, net $ 74,907 $ 69,085 Cloud-based Enterprise Resource Planning Implementation Costs We have capitalized certain costs associated with the implementation of our cloud-based Enterprise Resource Planning (“ERP”) system in accordance with ASC Topic 350, Intangibles Goodwill and Other 350” Total unamortized capitalized cloud computing implementation costs totaled $10.7 million and $12.2 million at June 29, 2024, December 30, 2023, seven three six June 29, 2024, three six July 1, 2023, Segment Information We apply the provisions of ASC Topic 280, Segment Reporting 280” three 280 one Goodwill, Intangible Assets and Other Long-Lived Assets We evaluate goodwill for impairment annually and when an event occurs or circumstances change that indicate that the carrying value may not first second not 50/50 We conduct our annual impairment test as of October 1 October 1, 2023, may June 29, 2024, not not. may Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets might not may not not During the first six 2024 2023, no Product Warranty Product warranty costs are accrued in the period sales are recognized. Our products are generally sold with standard warranty periods, which differ by product, ranging from 12- to 36-months. Parts and labor are typically covered under the terms of the warranty agreement. Our warranty expense accruals are based on historical and estimated costs by product and configuration. From time-to-time we offer customers extended warranties beyond the standard warranty period. In those situations, the revenue relating to the extended warranty is deferred at its estimated relative standalone selling price and recognized on a straight-line basis over the contract period. Costs associated with our extended warranty contracts are expensed as incurred. Restructuring Costs We record restructuring activities including costs for one 420, Exit or Disposal Cost Obligations 420” . 420 712, Nonretirement Postemployment Benefits 4, Debt Issuance Costs We defer costs related to the issuance of debt. Debt issuance costs directly related to our Term Loan Credit Facility were presented within noncurrent liabilities as a reduction of long-term debt in our condensed consolidated balance sheets. The amortization of such costs was recognized as interest expense using the effective interest method over the term of the respective debt issue. Amortization related to deferred debt issuance costs and original discount costs was $32,000 and $0.1 million for the three six July 1, 2023, February 9, 2024, 3, Foreign Remeasurement and Currency Translation Assets and liabilities of our wholly owned foreign subsidiaries that use the U.S. Dollar as their functional currency are re-measured using exchange rates in effect at the end of the period, except for nonmonetary assets, such as inventories and property, plant and equipment, which are re-measured using historical exchange rates. Revenues and costs are re-measured using average exchange rates for the period, except for costs related to those balance sheet items that are re-measured using historical exchange rates. Gains and losses on foreign currency transactions are recognized as incurred. During the three six June 29, 2024, three six July 1, 2023, Certain of our foreign subsidiaries have designated the local currency as their functional currency and, as a result, their assets and liabilities are translated at the rate of exchange at the balance sheet date, while revenue and expenses are translated using the average exchange rate for the period. Cumulative foreign currency translation adjustments resulting from the translation of the financial statements are included as a separate component of stockholders’ equity. Foreign Exchange Derivative Contracts We operate and sell our products in various global markets. As a result, we are exposed to changes in foreign currency exchange rates. To minimize foreign exchange volatility, we enter into foreign currency forward contracts with a financial institution to hedge against future movements in foreign exchange rates that affect certain existing U.S. Dollar denominated assets and liabilities held at our subsidiaries whose functional currency is the local currency. For accounting purposes, our foreign currency forward contracts are not 7, Share-Based Compensation We measure and recognize all share-based compensation under the fair value method. Reported share-based compensation is classified, in our condensed consolidated financial statements, as follows (in thousands) Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Cost of sales $ 262 $ 216 $ 489 $ 396 Research and development 1,001 819 1,835 1,685 Selling, general and administrative 4,320 3,397 7,887 6,265 Total share-based compensation 5,583 4,432 10,211 8,346 Income tax effect 8 (62 ) 211 (2,838 ) Total share-based compensation, net $ 5,591 $ 4,370 $ 10,422 $ 5,508 Income (Loss) Per Share Basic income (loss) per common share is computed by dividing net income by the weighted-average number of common shares outstanding during the reporting period. Diluted income per share includes the dilutive effect of common shares potentially issuable upon the exercise of stock options, vesting of outstanding restricted stock and performance stock units and issuance of stock under our employee stock purchase plan using the treasury stock method. In loss periods, potentially dilutive securities are excluded from the per share computations due to their anti-dilutive effect. For purposes of computing diluted income per share, certain restricted and performance stock units and stock options with exercise prices that exceed the average fair market value of our common stock for the period are excluded. For the three six July 1, 2023, The following table reconciles the denominators used in computing basic and diluted income per share ( in thousands) Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Weighted average common shares 46,965 47,618 47,049 47,481 Effect of dilutive securities - 410 - 618 46,965 48,028 47,049 48,099 Leases We determine if a contract contains a lease at inception. Operating leases are included in operating lease right of use (“ROU”) assets, current other accrued liabilities, and long-term lease liabilities on our condensed consolidated balance sheets. Finance leases are included in property, plant and equipment, other current accrued liabilities, and long-term lease liabilities on our condensed consolidated balance sheets. Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at January 1, 2019, 2016 02, Leases (Topic 842 not The operating lease ROU asset also includes any lease payments made, lease incentives, favorable and unfavorable lease terms recognized in business acquisitions and excludes initial direct costs incurred and variable lease payments. Variable lease payments include estimated payments that are subject to reconciliations throughout the lease term, increases or decreases in the contractual rent payments, as a result of changes in indices or interest rates and tax payments that are based on prevailing rates. Our lease terms may Leases with an initial term of 12 not We sublease certain leased assets to third None Revenue Recognition Our net sales are derived from the sale of products and services and are adjusted for estimated returns and allowances, which historically have been insignificant. We recognize revenue when the obligations under the terms of a contract with our customers are satisfied; generally, this occurs with the transfer of control of our systems, non-system products or the completion of services. In circumstances where control is not Revenue for established products that have previously satisfied a customer’s acceptance requirements is generally recognized upon shipment. In cases where a prior history of customer acceptance cannot be demonstrated or from sales where customer payment dates are not Certain of our equipment sales have multiple performance obligations that may Unsatisfied performance obligations primarily represent contracts for products with future delivery dates. At June 29, 2024, one 606, Revenue from Contracts with Customers 606” not one We generally sell our equipment with a product warranty. The product warranty provides assurance to customers that delivered products are as specified in the contract (an “assurance-type warranty”). Therefore, we account for such product warranties under ASC Topic 460, Guarantees 460” not The transaction price reflects our expectations about the consideration we will be entitled to receive from the customer and may not not Our contracts are typically less than one 606 one Accounts receivable represents our unconditional right to receive consideration from our customer. Payment terms do not one not On shipments where sales are not June 29, 2024, one December 30, 2023, one Net sales by type are as follows (in thousands): Three Months Ended Six Months Ended Disaggregated Net Sales June 29, 2024 July 1, 2023 June 29, 2024 July 1, 2023 Systems $ 35,272 $ 87,312 $ 72,583 $ 190,296 Non-systems 69,429 81,609 139,732 157,996 Total net sales $ 104,701 $ 168,921 $ 212,315 $ 348,292 Revenue by geographic area based upon product shipment destination (in thousands Three Months Ended Six Months Ended Disaggregated Net Sales June 29, 2024 July 1, 2023 June 29, 2024 July 1, 2023 United States $ 17,173 $ 15,750 $ 31,815 $ 34,493 China 19,072 28,394 30,816 49,504 Malaysia 13,791 23,258 30,690 55,153 Singapore 12,929 13,988 24,993 24,694 Philippines 9,708 25,359 21,550 57,149 Rest of the World 32,028 62,172 72,451 127,299 Total net sales $ 104,701 $ 168,921 $ 212,315 $ 348,292 A small number of customers historically have been responsible for a significant portion of our net sales. Significant customer concentration information is as follows: Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Customers individually accounting for more than 10% of net sales * two * one Percentage of net sales * 25% * 13% * No single customer represented more than 10% of consolidated net sales. Accumulated Other Comprehensive Loss Our accumulated other comprehensive loss balance totaled approximately $47.0 million and $34.8 million at June 29, 2024 December 30, 2023, not first six 2024 2023 not Retiree Medical Benefits We provide post-retirement health benefits to certain retired executives, one no first six 2024 2023 not Recent Accounting Pronouncements In December 2023, 2023 09, Income Taxes (Topic 740 December 15, 2024, may In November 2023, 2023 07, Segment Reporting (Topic 280 December 15, 2023 December 15, 2024. In March 2024, The Enhancement and Standardization of Climate-Related Disclosures for Investors 1 2 2025; April 2024,

Note 2 - Business Acquisition,

Note 2 - Business Acquisition, Goodwill and Purchased Intangible Assets	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Business Combination, Goodwill, and Intangible Assets Disclosure [Text Block]	2. Business Acquisitions, Goodwill and Purchased Intangible Assets EQT On October 2, 2023, October 2, 2023, January 2024 June 29, 2024, 805. The acquired assets and liabilities of EQT were recorded at their respective fair values including an amount for goodwill representing the difference between the consideration paid and the fair value of the identifiable net assets. The purchase price allocation was finalized during the second 2024. October 2, 2023 ( in thousands Current assets, including cash received $ 10,135 Property, plant and equipment 538 Intangible assets 34,500 Goodwill 15,377 Total assets acquired 60,550 Liabilities assumed (10,203 ) Net assets acquired $ 50,347 The allocation of the intangible assets subject to amortization is as follows (in thousands) Estimated Fair Value Weighted Average Useful Life (years) Developed technology $ 20,600 8.0 Customer relationships 12,900 10.0 Product backlog 100 1.0 Trademarks and trade names 900 5.0 Total intangible assets $ 34,500 Acquired intangible assets reported above are being amortized using the straight-line method over their estimated useful lives which approximates the pattern of how the economic benefit is expected to be used. This includes amounts allocated to customer relationships because of anticipated high customer retention rates that are common in the semiconductor capital equipment industry. The value assigned to developed technology was determined by using the relief from royalty method under the income approach, which included assumptions related to revenue growth rates, royalty rates, and discount rates. Developed technology, which comprises products that have reached technological feasibility, includes the products in EQT’s product line. The revenue estimates used to value the developed technology were based on estimates of relevant market sizes and growth factors, expected trends in technology and the nature and expected timing of new product introductions by EQT and competitors. The estimated after-tax cash flows were based on a hypothetical royalty rate applied to the revenues for the developed technology. The discount rate utilized to discount the net cash flows of the developed technology to present value was based on the risk associated with the respective cash flows taking into consideration the perceived risk of the technology relative to the other acquired assets, the weighted average cost of capital, the internal rate of return, and the weighted average return on assets. The value assigned to customer relationships was determined by using the multi-period excess earnings method under the income approach. The estimated cash flows were based on revenues from the existing customers net of operating expenses and net of contributory asset charges. The discount rate utilized to discount the net cash flows of the customer relationships to present value was based on the respective cash flows taking into consideration the perceived risks. The value assigned to backlog acquired was estimated based upon the contractual nature of the backlog as of October 2, 2023, The value assigned to trademarks and trade names acquired was determined by using the relief from royalty method under the income approach, which included assumptions related to revenue growth rates, royalty rates, and discount rates. EQT’s results of operations have been included starting October 2, 2023. not Goodwill and Intangible Assets Changes in the carrying value of goodwill during the year ended December 30, 2023, six June 29, 2024, in thousands Goodwill Balance December 31, 2022 $ 213,539 Additions 24,132 Impact of currency exchange 3,987 Balance, December 30, 2023 241,658 Impact of currency exchange (4,182 ) Balance, June 29, 2024 $ 237,476 Purchased intangible assets subject to amortization are as follows ( in thousands June 29, 2024 December 30, 2023 Remaining Weighted Gross Average Gross Carrying Accum. Amort. Carrying Accum. Amount Amort. Period (years) Amount Amort. Developed technology $ 231,036 $ 150,332 3.9 $ 233,623 $ 137,168 Customer relationships 73,132 32,092 6.6 73,759 28,932 Trade names 21,110 12,012 5 21,569 11,231 Product backlog 100 75 0.3 100 25 Covenant not-to-compete 219 164 2.5 250 175 Total intangible assets $ 325,597 $ 194,675 $ 329,301 $ 177,531 Changes in the carrying values of purchased intangible assets presented above are a result of the impact of fluctuations in currency exchange rates. Amortization expense related to intangible assets was approximately $9.7 million in the second 2024 first six 2024. second 2023 first six 2023.

Note 3 - Borrowings and Credit

Note 3 - Borrowings and Credit Agreements	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Debt Disclosure [Text Block]	3. Borrowings and Credit Agreements The following table is a summary of our borrowings ( in thousands) June 29, December 30, 2024 2023 Bank Term Loan under Credit Agreement $ - $ 29,327 Bank Term Loans-Kita 1,749 2,095 Construction Loan- Cohu GmbH 6,978 7,681 Lines of Credit 1,243 1,773 Total debt 9,970 40,876 Less: financing fees and discount - (249 ) Less: current portion (2,378 ) (6,324 ) Total long-term debt $ 7,592 $ 34,303 Credit Agreement On October 1, 2018, October 1, 2025. June 16, 2023, LIBOR SOFR July 1, 2023, December 30, 2023, On February 9, 2024, first 2024 first six 2023, Kita Term Loans We have a series of term loans with Japanese financial institutions primarily related to the expansion of our facility in Osaka, Japan. The loans are collateralized by the facility and land, carry interest at rates ranging from 0.05% to 0.55%, and expire at various dates through 2034. June 29, 2024, December 30, 2023, June 29, 2024. The term loans are denominated in Japanese Yen and, as a result, amounts disclosed herein will fluctuate because of changes in currency exchange rates. Construction Loans In July 2019 June 2020, one €10.1 The first €3.4 September 2029. second €5.2 April 2027. January 2034. third €0.9 May 2030. At June 29, 2024, December 30, 2023, June 29, 2024. Lines of Credit As a result of our acquisition of Kita, we assumed a series of revolving credit facilities with various financial institutions in Japan. The credit facilities renew monthly and provide Kita with access to working capital totaling up to 960 million Japanese Yen of which 200 million Japanese Yen was drawn as of June 29, 2024. June 29, 2024, The revolving lines of credit are denominated in Japanese Yen and, as a result, amounts disclosed herein will fluctuate because of changes in currency exchange rates. Our wholly owned subsidiary in Switzerland has one June 29, 2024 December 30, 2023

Note 4 - Restructuring Charges

Note 4 - Restructuring Charges	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	4. Restructuring Charges MCT Integration Program During the first 2023, 2023. June 29, 2024, As a result of the activities described above, we recognized total pretax charges of $0.4 million and $1.3 million during the three six July 1, 2023, 420. three six June 29, 2024 not The following table summarizes the activity within the restructuring related accounts for the MCT Integration Program during the first six July 1, 2023 (in thousands) Severance and Other Exit Other Payroll Costs Total Balance, December 31, 2022 $ - $ - $ - Costs accrued 1,217 87 1,304 Amounts paid or charged (813 ) (49 ) (862 ) Balance, July 1, 2023 $ 404 $ 38 $ 442

Note 5 - Financial Instruments

Note 5 - Financial Instruments Measured at Fair Value	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]	5. Financial Instruments Measured at Fair Value Our cash, cash equivalents, and short-term investments consisted primarily of cash and other investment grade securities. We do not We assess whether unrealized loss positions on available-for-sale debt securities are due to credit-related factors. The credit-related portion of unrealized losses, and any subsequent improvements, are recorded in earnings through an allowance account. Unrealized gains and losses that are not not not Investments that we have classified as short-term, by security type, are as follows (in thousands) June 29, 2024 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses (1) Value Corporate debt securities (2) $ 32,822 $ 29 $ 37 $ 32,814 U.S. treasury securities 13,471 - 17 13,454 Bank certificates of deposit 8,170 1 1 8,170 Asset-backed securities 3,856 3 1 3,858 Foreign government security 702 - - 702 Municipal securities 330 1 - 331 $ 59,351 $ 34 $ 56 $ 59,329 December 30, 2023 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses (1) Value Corporate debt securities (2) $ 45,105 $ 147 $ 15 $ 45,237 U.S. treasury securities 20,439 26 116 20,349 Bank certificates of deposit 15,468 20 - 15,488 Asset-backed securities 8,017 17 10 8,024 Foreign government security 741 - - 741 Municipal securities 330 5 - 335 $ 90,100 $ 215 $ 141 $ 90,174 ( 1 As of June 29, 2024, December 30, 2023, ( 2 Corporate debt securities include investments in financial and other corporate institutions. No Effective maturities of short-term investments are as follows (in thousands) June 29, 2024 December 30, 2023 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Due in one year or less $ 40,377 $ 40,346 $ 57,981 $ 57,887 Due after one year through five years 18,974 18,983 31,378 31,546 Due after five years through ten years - - 741 741 $ 59,351 $ 59,329 $ 90,100 $ 90,174 Accounting standards pertaining to fair value measurements establish a three 1, 2, 3, no 1. 2. The following table summarizes, by major security type, our financial instruments that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy (in thousands) Fair value measurements at June 29, 2024 using: Total Estimated Level 1 Level 2 Level 3 Fair Value Cash $ 169,955 $ - $ - $ 169,955 Corporate debt securities - 33,563 - 33,563 Money market funds - 32,364 - 32,364 U.S. treasury securities - 13,454 - 13,454 Bank certificates of deposit - 8,170 - 8,170 Asset-backed securities - 3,858 - 3,858 Foreign government security - 702 - 702 Municipal securities - 331 - 331 $ 169,955 $ 92,442 $ - $ 262,397 Fair value measurements at December 30, 2023 using: Total Estimated Level 1 Level 2 Level 3 Fair Value Cash $ 157,697 $ - $ - $ 157,697 Money market funds - 81,115 - 81,115 Corporate debt securities - 51,949 - 51,949 U.S. treasury securities - 20,349 - 20,349 Bank certificates of deposit - 15,488 - 15,488 Asset-backed securities - 8,024 - 8,024 Foreign government security - 741 - 741 Municipal securities - 335 - 335 $ 157,697 $ 178,001 $ - $ 335,698

Note 6 - Employee Benefit Plans

Note 6 - Employee Benefit Plans	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	6. Employee Stock Benefit Plans Our 2005 “2005 1997 may 2005 not June 29, 2024, 2005 Stock Options Stock options may one four 2005 ten first six 2024, not June 29, 2024, Restricted Stock Units We grant restricted stock units (“RSUs”) to certain employees, consultants and directors. RSUs vest in annual increments that range from one four not not not June 29, 2024. In the first six 2024, June 29, 2024, Performance Stock Units We grant performance stock units (“PSUs”) to certain senior executives as a part of our long-term equity compensation program. The number of shares of common stock that will ultimately be issued to settle PSUs granted ranges from 0% to 200% of the number granted and is determined based on certain performance criteria over a three 2000 third We estimate the fair value of the PSUs using a Monte Carlo simulation model on the date of grant. Compensation expense is recognized over the requisite service period. To the extent applicable performance conditions are satisfied, shares of our common stock are issued on the date the PSUs vest net of the minimum statutory tax withholding requirements to be paid by us on behalf of our employees. As a result, the actual number of shares issued will be fewer than the actual number of PSUs outstanding on June 29, 2024. In the first six 2024, June 29, 2024, Employee Stock Purchase Plan The ESPP provides for the issuance of shares of our common stock. Under the ESPP, eligible employees may 6 two November 1 April 30 May 1 October 31, first six 2024,

Note 7 - Derivative Financial I

Note 7 - Derivative Financial Instruments	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	7. Derivative Financial Instruments Foreign Exchange Derivative Contracts We operate and sell our products in various global markets and, as a result, we are exposed to changes in foreign currency exchange rates. To minimize foreign exchange volatility, we utilize foreign currency forward contracts to offset future movements in foreign exchange rates that affect certain existing foreign currency denominated assets and liabilities. Under this program, our strategy is to have increases or decreases in our foreign currency exposures mitigated by gains or losses on the foreign currency forward contracts to reduce the risks and volatility associated with foreign currency transaction gains or losses. We do not not The fair value of our foreign exchange derivative contracts was determined based on current foreign currency exchange rates and forward points. All our foreign exchange derivative contracts outstanding on June 29, 2024 third 2024. The following table provides information about our foreign currency forward contracts outstanding as of June 29, 2024 (in thousands) Contract Amount Contract Amount Currency Contract Position (Local Currency) (U.S. Dollars) Euro Buy 45,224 $ 48,500 Swiss Franc Buy 11,834 13,200 South Korean Won Buy 2,760,800 2,000 Japanese Yen Buy 80,135 500 $ 64,200 Our foreign currency contracts are classified within Level 2 June 29, 2024 The location and amount of gains and losses related to non-designated derivative instruments in the condensed consolidated statements of operations were as follows ( in thousands Three Months Ended Six Months Ended Derivatives not designated Location of gain (loss) Jun. 29, Jul. 1, Jun. 29, Jul. 1, as hedging instruments recognized on derivatives 2024 2023 2024 2023 Foreign exchange forward contracts Foreign transaction gain (loss) $ (1,247 ) $ 132 $ (5,325 ) 1,213

Note 8 - Equity

Note 8 - Equity	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Equity [Text Block]	8. Equity Share Repurchase Program On October 28, 2021, November 2, 2021, no October 25, 2022, may may 10b5 1 three June 29, 2024, six June 29, 2024, three July 1, 2023, six July 1, 2023, June 29, 2024,

Note 9 - Income Taxes

Note 9 - Income Taxes	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Income Tax Disclosure [Text Block]	9. Income Taxes We account for income taxes in accordance with ASC Topic 740, Income Taxes 740” We conduct business globally and, as a result, Cohu or one Companies are required to assess whether a valuation allowance should be recorded against their deferred tax assets (“DTAs”) based on the consideration of all available evidence, using a “more likely than not” four 1 2 3 4 In assessing whether a valuation allowance is required, significant weight is to be given to evidence that can be objectively verified. We have evaluated our DTAs at each reporting period, including an assessment of our cumulative income or loss over the prior three Based on the evidence available, including a lack of sustainable earnings and history of expiring unused NOLs, and tax credits, we continue to maintain our judgment that a previously recorded valuation allowance against substantially all net deferred tax assets in the United States is required. If a change in judgment regarding this valuation allowance were to occur in the future, we will record a potentially material deferred tax benefit, which could result in a favorable impact on the effective tax rate in that period. In accordance with the disclosure requirements in ASC 740, one

Note 10 - Leases

Note 10 - Leases	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Lessee, Leases [Text Block]	10. Leases We lease certain of our facilities, equipment and vehicles under non-cancelable operating and finance leases. Leases with initial terms of 12 not Our leases have remaining lease terms of 1 year to 34 years, some of which include one third Supplemental balance sheet information related to leases was as follows: (in thousands) Classification June 29, 2024 December 30, 2023 Assets Operating lease assets Operating lease right-of-use assets (1) $ 14,896 $ 16,778 Finance lease assets Property, plant and equipment, net (1) 9,039 247 Total lease assets $ 23,935 $ 17,025 Liabilities Current Operating Other accrued liabilities (1) $ 4,863 $ 5,122 Finance Other accrued liabilities (1) 7,984 11 Noncurrent Operating Long-term lease liabilities 11,400 13,160 Finance Long-term lease liabilities 9 15 Total lease liabilities $ 24,256 $ 18,308 Weighted-average remaining lease term (years) Operating leases 5.3 5.5 Finance leases 0.1 1.7 Weighted-average discount rate Operating leases 6.4 % 6.4 % Finance leases 3.2 % 4.0 % ( 1 Finance lease assets are recorded net of accumulated amortization of $0.4 million and $0.3 million as of June 29, 2024 December 30, 2023, first 2024, 2024. The components of lease expense were as follows: Three Months Ended Six Months Ended (in thousands) June 29, 2024 July 1, 2023 June 29, 2024 July 1, 2023 Operating leases $ 1,563 $ 1,680 $ 3,181 $ 3,359 Variable lease expense 577 563 1,147 1,122 Short-term operating leases 1 7 2 13 Finance leases Amortization of leased assets 22 28 43 54 Interest on lease liabilities 80 1 133 1 Sublease income (1 ) (8 ) (4 ) (18 ) Net lease cost $ 2,242 $ 2,271 $ 4,502 $ 4,531 Future minimum lease payments on June 29, 2024, Operating Finance (in thousands) leases leases Total 2024 $ 2,906 $ 8,003 $ 10,909 2025 5,571 11 5,582 2026 2,861 4 2,865 2027 1,590 - 1,590 2028 1,269 - 1,269 Thereafter 5,497 - 5,497 Total lease payments 19,694 8,018 27,712 Less: Interest (3,431 ) (25 ) (3,456 ) Present value of lease liabilities $ 16,263 $ 7,993 $ 24,256 Supplemental cash flow information related to leases was as follows: Six Months Ended (in thousands) June 29, 2024 July 1, 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 3,275 $ 3,353 Operating cash flows from finance leases $ 129 $ 1 Financing cash flows from finance leases $ 11 $ 39 Leased assets obtained in exchange for new finance lease liabilities $ 8,844 $ - Leased assets obtained in exchange for new operating lease liabilities $ 1,357 $ 409 Financing lease assets acquired in MCT acquisition $ - $ 19 Operating lease assets acquired in MCT acquisition $ - $ 130

Note 11 - Contingencies

Note 11 - Contingencies	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	11. Contingencies From time-to-time we are involved in various legal proceedings, examinations by various tax authorities and claims that have arisen in the ordinary course of our business. The outcome of any litigation is inherently uncertain. While there can be no not

Note 12 - Guarantees

Note 12 - Guarantees	6 Months Ended
	Jun. 29, 2024
Notes to Financial Statements
Guarantees [Text Block]	12. Guarantees Product Warranty Our products are generally sold with warranty periods that range from 12 to 36 months following sale or acceptance. The product warranty promises customers that delivered products are as specified in the contract (an “assurance-type warranty”). Therefore, we account for such product warranties under ASC 460, not Changes in accrued warranty were as follows ( in thousands Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Balance at beginning of period $ 4,295 $ 6,115 $ 5,017 $ 6,214 Warranty expense accruals 896 1,742 1,802 3,722 Warranty payments (1,407 ) (2,323 ) (3,035 ) (4,469 ) Liability acquired - - - 67 Balance at end of period $ 3,784 $ 5,534 $ 3,784 $ 5,534 Accrued warranty amounts expected to be incurred after one June 29, 2024, December 30, 2023,

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended	6 Months Ended
	Jun. 29, 2024 shares	Jun. 29, 2024 shares
ecd_TradingArrByIndTable
Material Terms of Trading Arrangement [Text Block]		5. Other Information. Rule 10b5 1 Our directors and executive officers may 10b5 1 10b5 1 not 10b5 1 may 10b5 1 not 10b5 1 10b 1 second 2024. Plan Plan Expiration Number of Shares Name and Position Action Adoption Date Date to be Sold under Plan Christopher G. Bohrson, Senior Vice President & Chief Customer Officer Adoption 5/17/2024 5/16/2025 2,000 William E. Bendush, Director ( 1 Adoption 5/30/2024 5/30/2025 6,800 ( 1 This 10b5 1 3/25/87. During the second 2024, none 10b5 1 10b5 1 408
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false
Rule 10b5-1 Arrangement Terminated [Flag]	false
Christopher G. Bohrson [Member]
ecd_TradingArrByIndTable
Trading Arrangement Adoption Date	5/17/2024
Trading Arrangement, Securities Aggregate Available Amount	2,000	2,000
Trading Arrangement, Individual Name	Christopher G. Bohrson
Trading Arrangement, Individual Title	Senior Vice President & Chief Customer Officer
Rule 10b5-1 Arrangement Adopted [Flag]	true
William E. Bendush [Member]
ecd_TradingArrByIndTable
Trading Arrangement Adoption Date	5/30/2024
Trading Arrangement, Securities Aggregate Available Amount	6,800	6,800
Trading Arrangement, Individual Name	William E. Bendush
Trading Arrangement, Individual Title	Director
Rule 10b5-1 Arrangement Adopted [Flag]	true

Significant Accounting Policies

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 29, 2024
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation Our fiscal years are based on a 52 53 December. December 30, 2023, June 29, 2024, ( second 2024” first six 2024” July 1, 2023, ( second 2023” first six 2023” three six June 29, 2024 July 1, 2023 13 26 Our interim results are not June 29, 2024 three six June 29, 2024. December 30, 2023, 2023 10 All significant intercompany transactions and balances have been eliminated in consolidation.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration of Credit Risk Financial instruments that potentially subject us to significant credit risk consist principally of cash equivalents, short-term investments and trade accounts receivable. We invest in a variety of financial instruments and, by policy, limit the amount of credit exposure with any one Our trade accounts receivable are presented net of an allowance for credit losses, which is determined in accordance with the guidance provided by Accounting Standards Codification (“ASC”) Topic 326, Financial Instruments-Credit Losses 326” June 29, 2024 December 30, 2023, June 29, 2024, may
Inventory, Policy [Policy Text Block]	Inventories Inventories are stated at the lower of cost, determined on a first first Inventories by category were as follows ( in thousands June 29, December 30, 2024 2023 Raw materials and purchased parts $ 95,407 $ 103,118 Work in process 26,217 26,820 Finished goods 24,450 25,855 Total inventories $ 146,074 $ 155,793
Property, Plant and Equipment, Policy [Policy Text Block]	Property, Plant and Equipment Depreciation and amortization of property, plant and equipment, both owned and under financing lease, is calculated principally on the straight‑line method based on estimated useful lives of thirty forty five fifteen three ten not (in thousands) June 29, December 30, 2024 2023 Land and land improvements $ 6,999 $ 7,301 Buildings and building improvements 46,846 39,677 Machinery and equipment 105,761 108,831 159,606 155,809 Less accumulated depreciation and amortization (84,699 ) (86,724 ) Property, plant and equipment, net $ 74,907 $ 69,085
Internal Use Software, Policy [Policy Text Block]	Cloud-based Enterprise Resource Planning Implementation Costs We have capitalized certain costs associated with the implementation of our cloud-based Enterprise Resource Planning (“ERP”) system in accordance with ASC Topic 350, Intangibles Goodwill and Other 350” Total unamortized capitalized cloud computing implementation costs totaled $10.7 million and $12.2 million at June 29, 2024, December 30, 2023, seven three six June 29, 2024, three six July 1, 2023,
Segment Reporting, Policy [Policy Text Block]	Segment Information We apply the provisions of ASC Topic 280, Segment Reporting 280” three 280 one
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill, Intangible Assets and Other Long-Lived Assets We evaluate goodwill for impairment annually and when an event occurs or circumstances change that indicate that the carrying value may not first second not 50/50 We conduct our annual impairment test as of October 1 October 1, 2023, may June 29, 2024, not not. may Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets might not may not not During the first six 2024 2023, no
Standard Product Warranty, Policy [Policy Text Block]	Product Warranty Product warranty costs are accrued in the period sales are recognized. Our products are generally sold with standard warranty periods, which differ by product, ranging from 12- to 36-months. Parts and labor are typically covered under the terms of the warranty agreement. Our warranty expense accruals are based on historical and estimated costs by product and configuration. From time-to-time we offer customers extended warranties beyond the standard warranty period. In those situations, the revenue relating to the extended warranty is deferred at its estimated relative standalone selling price and recognized on a straight-line basis over the contract period. Costs associated with our extended warranty contracts are expensed as incurred.
Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block]	Restructuring Costs We record restructuring activities including costs for one 420, Exit or Disposal Cost Obligations 420” . 420 712, Nonretirement Postemployment Benefits 4,
Debt, Policy [Policy Text Block]	Debt Issuance Costs We defer costs related to the issuance of debt. Debt issuance costs directly related to our Term Loan Credit Facility were presented within noncurrent liabilities as a reduction of long-term debt in our condensed consolidated balance sheets. The amortization of such costs was recognized as interest expense using the effective interest method over the term of the respective debt issue. Amortization related to deferred debt issuance costs and original discount costs was $32,000 and $0.1 million for the three six July 1, 2023, February 9, 2024, 3,
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Remeasurement and Currency Translation Assets and liabilities of our wholly owned foreign subsidiaries that use the U.S. Dollar as their functional currency are re-measured using exchange rates in effect at the end of the period, except for nonmonetary assets, such as inventories and property, plant and equipment, which are re-measured using historical exchange rates. Revenues and costs are re-measured using average exchange rates for the period, except for costs related to those balance sheet items that are re-measured using historical exchange rates. Gains and losses on foreign currency transactions are recognized as incurred. During the three six June 29, 2024, three six July 1, 2023, Certain of our foreign subsidiaries have designated the local currency as their functional currency and, as a result, their assets and liabilities are translated at the rate of exchange at the balance sheet date, while revenue and expenses are translated using the average exchange rate for the period. Cumulative foreign currency translation adjustments resulting from the translation of the financial statements are included as a separate component of stockholders’ equity.
Derivatives, Policy [Policy Text Block]	Foreign Exchange Derivative Contracts We operate and sell our products in various global markets. As a result, we are exposed to changes in foreign currency exchange rates. To minimize foreign exchange volatility, we enter into foreign currency forward contracts with a financial institution to hedge against future movements in foreign exchange rates that affect certain existing U.S. Dollar denominated assets and liabilities held at our subsidiaries whose functional currency is the local currency. For accounting purposes, our foreign currency forward contracts are not 7,
Share-Based Payment Arrangement [Policy Text Block]	Share-Based Compensation We measure and recognize all share-based compensation under the fair value method. Reported share-based compensation is classified, in our condensed consolidated financial statements, as follows (in thousands) Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Cost of sales $ 262 $ 216 $ 489 $ 396 Research and development 1,001 819 1,835 1,685 Selling, general and administrative 4,320 3,397 7,887 6,265 Total share-based compensation 5,583 4,432 10,211 8,346 Income tax effect 8 (62 ) 211 (2,838 ) Total share-based compensation, net $ 5,591 $ 4,370 $ 10,422 $ 5,508
Earnings Per Share, Policy [Policy Text Block]	Income (Loss) Per Share Basic income (loss) per common share is computed by dividing net income by the weighted-average number of common shares outstanding during the reporting period. Diluted income per share includes the dilutive effect of common shares potentially issuable upon the exercise of stock options, vesting of outstanding restricted stock and performance stock units and issuance of stock under our employee stock purchase plan using the treasury stock method. In loss periods, potentially dilutive securities are excluded from the per share computations due to their anti-dilutive effect. For purposes of computing diluted income per share, certain restricted and performance stock units and stock options with exercise prices that exceed the average fair market value of our common stock for the period are excluded. For the three six July 1, 2023, The following table reconciles the denominators used in computing basic and diluted income per share ( in thousands) Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Weighted average common shares 46,965 47,618 47,049 47,481 Effect of dilutive securities - 410 - 618 46,965 48,028 47,049 48,099
Lessee, Leases [Policy Text Block]	Leases We determine if a contract contains a lease at inception. Operating leases are included in operating lease right of use (“ROU”) assets, current other accrued liabilities, and long-term lease liabilities on our condensed consolidated balance sheets. Finance leases are included in property, plant and equipment, other current accrued liabilities, and long-term lease liabilities on our condensed consolidated balance sheets. Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at January 1, 2019, 2016 02, Leases (Topic 842 not The operating lease ROU asset also includes any lease payments made, lease incentives, favorable and unfavorable lease terms recognized in business acquisitions and excludes initial direct costs incurred and variable lease payments. Variable lease payments include estimated payments that are subject to reconciliations throughout the lease term, increases or decreases in the contractual rent payments, as a result of changes in indices or interest rates and tax payments that are based on prevailing rates. Our lease terms may Leases with an initial term of 12 not We sublease certain leased assets to third None
Revenue [Policy Text Block]	Revenue Recognition Our net sales are derived from the sale of products and services and are adjusted for estimated returns and allowances, which historically have been insignificant. We recognize revenue when the obligations under the terms of a contract with our customers are satisfied; generally, this occurs with the transfer of control of our systems, non-system products or the completion of services. In circumstances where control is not Revenue for established products that have previously satisfied a customer’s acceptance requirements is generally recognized upon shipment. In cases where a prior history of customer acceptance cannot be demonstrated or from sales where customer payment dates are not Certain of our equipment sales have multiple performance obligations that may Unsatisfied performance obligations primarily represent contracts for products with future delivery dates. At June 29, 2024, one 606, Revenue from Contracts with Customers 606” not one We generally sell our equipment with a product warranty. The product warranty provides assurance to customers that delivered products are as specified in the contract (an “assurance-type warranty”). Therefore, we account for such product warranties under ASC Topic 460, Guarantees 460” not The transaction price reflects our expectations about the consideration we will be entitled to receive from the customer and may not not Our contracts are typically less than one 606 one Accounts receivable represents our unconditional right to receive consideration from our customer. Payment terms do not one not On shipments where sales are not June 29, 2024, one December 30, 2023, one Net sales by type are as follows (in thousands): Three Months Ended Six Months Ended Disaggregated Net Sales June 29, 2024 July 1, 2023 June 29, 2024 July 1, 2023 Systems $ 35,272 $ 87,312 $ 72,583 $ 190,296 Non-systems 69,429 81,609 139,732 157,996 Total net sales $ 104,701 $ 168,921 $ 212,315 $ 348,292 Revenue by geographic area based upon product shipment destination (in thousands Three Months Ended Six Months Ended Disaggregated Net Sales June 29, 2024 July 1, 2023 June 29, 2024 July 1, 2023 United States $ 17,173 $ 15,750 $ 31,815 $ 34,493 China 19,072 28,394 30,816 49,504 Malaysia 13,791 23,258 30,690 55,153 Singapore 12,929 13,988 24,993 24,694 Philippines 9,708 25,359 21,550 57,149 Rest of the World 32,028 62,172 72,451 127,299 Total net sales $ 104,701 $ 168,921 $ 212,315 $ 348,292 A small number of customers historically have been responsible for a significant portion of our net sales. Significant customer concentration information is as follows: Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Customers individually accounting for more than 10% of net sales * two * one Percentage of net sales * 25% * 13% * No single customer represented more than 10% of consolidated net sales.
Comprehensive Income, Policy [Policy Text Block]	Accumulated Other Comprehensive Loss Our accumulated other comprehensive loss balance totaled approximately $47.0 million and $34.8 million at June 29, 2024 December 30, 2023, not first six 2024 2023 not
Pension and Other Postretirement Plans, Policy [Policy Text Block]	Retiree Medical Benefits We provide post-retirement health benefits to certain retired executives, one no first six 2024 2023 not
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements In December 2023, 2023 09, Income Taxes (Topic 740 December 15, 2024, may In November 2023, 2023 07, Segment Reporting (Topic 280 December 15, 2023 December 15, 2024. In March 2024, The Enhancement and Standardization of Climate-Related Disclosures for Investors 1 2 2025; April 2024,

Note 1 - Summary of Significa_2

Note 1 - Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 29, 2024
Notes Tables
Schedule of Inventory, Current [Table Text Block]	June 29, December 30, 2024 2023 Raw materials and purchased parts $ 95,407 $ 103,118 Work in process 26,217 26,820 Finished goods 24,450 25,855 Total inventories $ 146,074 $ 155,793
Property, Plant and Equipment [Table Text Block]	June 29, December 30, 2024 2023 Land and land improvements $ 6,999 $ 7,301 Buildings and building improvements 46,846 39,677 Machinery and equipment 105,761 108,831 159,606 155,809 Less accumulated depreciation and amortization (84,699 ) (86,724 ) Property, plant and equipment, net $ 74,907 $ 69,085
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Cost of sales $ 262 $ 216 $ 489 $ 396 Research and development 1,001 819 1,835 1,685 Selling, general and administrative 4,320 3,397 7,887 6,265 Total share-based compensation 5,583 4,432 10,211 8,346 Income tax effect 8 (62 ) 211 (2,838 ) Total share-based compensation, net $ 5,591 $ 4,370 $ 10,422 $ 5,508
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Weighted average common shares 46,965 47,618 47,049 47,481 Effect of dilutive securities - 410 - 618 46,965 48,028 47,049 48,099
Disaggregation of Revenue [Table Text Block]	Three Months Ended Six Months Ended Disaggregated Net Sales June 29, 2024 July 1, 2023 June 29, 2024 July 1, 2023 Systems $ 35,272 $ 87,312 $ 72,583 $ 190,296 Non-systems 69,429 81,609 139,732 157,996 Total net sales $ 104,701 $ 168,921 $ 212,315 $ 348,292 Three Months Ended Six Months Ended Disaggregated Net Sales June 29, 2024 July 1, 2023 June 29, 2024 July 1, 2023 United States $ 17,173 $ 15,750 $ 31,815 $ 34,493 China 19,072 28,394 30,816 49,504 Malaysia 13,791 23,258 30,690 55,153 Singapore 12,929 13,988 24,993 24,694 Philippines 9,708 25,359 21,550 57,149 Rest of the World 32,028 62,172 72,451 127,299 Total net sales $ 104,701 $ 168,921 $ 212,315 $ 348,292
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Customers individually accounting for more than 10% of net sales * two * one Percentage of net sales * 25% * 13% * No single customer represented more than 10% of consolidated net sales.

Note 2 - Business Acquisition_2

Note 2 - Business Acquisition, Goodwill and Purchased Intangible Assets (Tables)	6 Months Ended
	Jun. 29, 2024
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Current assets, including cash received $ 10,135 Property, plant and equipment 538 Intangible assets 34,500 Goodwill 15,377 Total assets acquired 60,550 Liabilities assumed (10,203 ) Net assets acquired $ 50,347
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]	Estimated Fair Value Weighted Average Useful Life (years) Developed technology $ 20,600 8.0 Customer relationships 12,900 10.0 Product backlog 100 1.0 Trademarks and trade names 900 5.0 Total intangible assets $ 34,500
Schedule of Goodwill [Table Text Block]	Goodwill Balance December 31, 2022 $ 213,539 Additions 24,132 Impact of currency exchange 3,987 Balance, December 30, 2023 241,658 Impact of currency exchange (4,182 ) Balance, June 29, 2024 $ 237,476
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table Text Block]	June 29, 2024 December 30, 2023 Remaining Weighted Gross Average Gross Carrying Accum. Amort. Carrying Accum. Amount Amort. Period (years) Amount Amort. Developed technology $ 231,036 $ 150,332 3.9 $ 233,623 $ 137,168 Customer relationships 73,132 32,092 6.6 73,759 28,932 Trade names 21,110 12,012 5 21,569 11,231 Product backlog 100 75 0.3 100 25 Covenant not-to-compete 219 164 2.5 250 175 Total intangible assets $ 325,597 $ 194,675 $ 329,301 $ 177,531

Note 3 - Borrowings and Credi_2

Note 3 - Borrowings and Credit Agreements (Tables)	6 Months Ended
	Jun. 29, 2024
Notes Tables
Schedule of Debt [Table Text Block]	June 29, December 30, 2024 2023 Bank Term Loan under Credit Agreement $ - $ 29,327 Bank Term Loans-Kita 1,749 2,095 Construction Loan- Cohu GmbH 6,978 7,681 Lines of Credit 1,243 1,773 Total debt 9,970 40,876 Less: financing fees and discount - (249 ) Less: current portion (2,378 ) (6,324 ) Total long-term debt $ 7,592 $ 34,303

Note 4 - Restructuring Charges

Note 4 - Restructuring Charges (Tables)	6 Months Ended
	Jun. 29, 2024
Notes Tables
Restructuring and Related Costs [Table Text Block]	Severance and Other Exit Other Payroll Costs Total Balance, December 31, 2022 $ - $ - $ - Costs accrued 1,217 87 1,304 Amounts paid or charged (813 ) (49 ) (862 ) Balance, July 1, 2023 $ 404 $ 38 $ 442

Note 5 - Financial Instrument_2

Note 5 - Financial Instruments Measured at Fair Value (Tables)	6 Months Ended
	Jun. 29, 2024
Notes Tables
Unrealized Gain (Loss) on Investments [Table Text Block]	June 29, 2024 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses (1) Value Corporate debt securities (2) $ 32,822 $ 29 $ 37 $ 32,814 U.S. treasury securities 13,471 - 17 13,454 Bank certificates of deposit 8,170 1 1 8,170 Asset-backed securities 3,856 3 1 3,858 Foreign government security 702 - - 702 Municipal securities 330 1 - 331 $ 59,351 $ 34 $ 56 $ 59,329 December 30, 2023 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses (1) Value Corporate debt securities (2) $ 45,105 $ 147 $ 15 $ 45,237 U.S. treasury securities 20,439 26 116 20,349 Bank certificates of deposit 15,468 20 - 15,488 Asset-backed securities 8,017 17 10 8,024 Foreign government security 741 - - 741 Municipal securities 330 5 - 335 $ 90,100 $ 215 $ 141 $ 90,174
Investments Classified by Contractual Maturity Date [Table Text Block]	June 29, 2024 December 30, 2023 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Due in one year or less $ 40,377 $ 40,346 $ 57,981 $ 57,887 Due after one year through five years 18,974 18,983 31,378 31,546 Due after five years through ten years - - 741 741 $ 59,351 $ 59,329 $ 90,100 $ 90,174
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	Fair value measurements at June 29, 2024 using: Total Estimated Level 1 Level 2 Level 3 Fair Value Cash $ 169,955 $ - $ - $ 169,955 Corporate debt securities - 33,563 - 33,563 Money market funds - 32,364 - 32,364 U.S. treasury securities - 13,454 - 13,454 Bank certificates of deposit - 8,170 - 8,170 Asset-backed securities - 3,858 - 3,858 Foreign government security - 702 - 702 Municipal securities - 331 - 331 $ 169,955 $ 92,442 $ - $ 262,397 Fair value measurements at December 30, 2023 using: Total Estimated Level 1 Level 2 Level 3 Fair Value Cash $ 157,697 $ - $ - $ 157,697 Money market funds - 81,115 - 81,115 Corporate debt securities - 51,949 - 51,949 U.S. treasury securities - 20,349 - 20,349 Bank certificates of deposit - 15,488 - 15,488 Asset-backed securities - 8,024 - 8,024 Foreign government security - 741 - 741 Municipal securities - 335 - 335 $ 157,697 $ 178,001 $ - $ 335,698

Note 7 - Derivative Financial_2

Note 7 - Derivative Financial Instruments (Tables)	6 Months Ended
	Jun. 29, 2024
Notes Tables
Schedule of Derivative Instruments [Table Text Block]	Contract Amount Contract Amount Currency Contract Position (Local Currency) (U.S. Dollars) Euro Buy 45,224 $ 48,500 Swiss Franc Buy 11,834 13,200 South Korean Won Buy 2,760,800 2,000 Japanese Yen Buy 80,135 500 $ 64,200
Derivative Instruments, Gain (Loss) [Table Text Block]	Three Months Ended Six Months Ended Derivatives not designated Location of gain (loss) Jun. 29, Jul. 1, Jun. 29, Jul. 1, as hedging instruments recognized on derivatives 2024 2023 2024 2023 Foreign exchange forward contracts Foreign transaction gain (loss) $ (1,247 ) $ 132 $ (5,325 ) 1,213

Note 10 - Leases (Tables)

Note 10 - Leases (Tables)	6 Months Ended
	Jun. 29, 2024
Notes Tables
Leases, Balance Sheet Information [Table Text Block]	(in thousands) Classification June 29, 2024 December 30, 2023 Assets Operating lease assets Operating lease right-of-use assets (1) $ 14,896 $ 16,778 Finance lease assets Property, plant and equipment, net (1) 9,039 247 Total lease assets $ 23,935 $ 17,025 Liabilities Current Operating Other accrued liabilities (1) $ 4,863 $ 5,122 Finance Other accrued liabilities (1) 7,984 11 Noncurrent Operating Long-term lease liabilities 11,400 13,160 Finance Long-term lease liabilities 9 15 Total lease liabilities $ 24,256 $ 18,308 Weighted-average remaining lease term (years) Operating leases 5.3 5.5 Finance leases 0.1 1.7 Weighted-average discount rate Operating leases 6.4 % 6.4 % Finance leases 3.2 % 4.0 %
Lease, Cost [Table Text Block]	Three Months Ended Six Months Ended (in thousands) June 29, 2024 July 1, 2023 June 29, 2024 July 1, 2023 Operating leases $ 1,563 $ 1,680 $ 3,181 $ 3,359 Variable lease expense 577 563 1,147 1,122 Short-term operating leases 1 7 2 13 Finance leases Amortization of leased assets 22 28 43 54 Interest on lease liabilities 80 1 133 1 Sublease income (1 ) (8 ) (4 ) (18 ) Net lease cost $ 2,242 $ 2,271 $ 4,502 $ 4,531
Lessee, Lease, Liability, Maturity [Table Text Block]	Operating Finance (in thousands) leases leases Total 2024 $ 2,906 $ 8,003 $ 10,909 2025 5,571 11 5,582 2026 2,861 4 2,865 2027 1,590 - 1,590 2028 1,269 - 1,269 Thereafter 5,497 - 5,497 Total lease payments 19,694 8,018 27,712 Less: Interest (3,431 ) (25 ) (3,456 ) Present value of lease liabilities $ 16,263 $ 7,993 $ 24,256
Lease, Cash Flow Information [Table Text Block]	Six Months Ended (in thousands) June 29, 2024 July 1, 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 3,275 $ 3,353 Operating cash flows from finance leases $ 129 $ 1 Financing cash flows from finance leases $ 11 $ 39 Leased assets obtained in exchange for new finance lease liabilities $ 8,844 $ - Leased assets obtained in exchange for new operating lease liabilities $ 1,357 $ 409 Financing lease assets acquired in MCT acquisition $ - $ 19 Operating lease assets acquired in MCT acquisition $ - $ 130

Note 12 - Guarantees (Tables)

Note 12 - Guarantees (Tables)	6 Months Ended
	Jun. 29, 2024
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	Three Months Ended Six Months Ended June 29, July 1, June 29, July 1, 2024 2023 2024 2023 Balance at beginning of period $ 4,295 $ 6,115 $ 5,017 $ 6,214 Warranty expense accruals 896 1,742 1,802 3,722 Warranty payments (1,407 ) (2,323 ) (3,035 ) (4,469 ) Liability acquired - - - 67 Balance at end of period $ 3,784 $ 5,534 $ 3,784 $ 5,534

Note 1 - Summary of Significa_3

Note 1 - Summary of Significant Accounting Policies (Details Textual)		3 Months Ended		6 Months Ended
	Oct. 01, 2023 USD ($)	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($) shares	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($) shares	Dec. 30, 2023 USD ($)
Accounts Receivable, Allowance for Credit Loss		$ 300,000		$ 300,000		$ 300,000
Capitalized Computer Software, Gross		10,700,000		10,700,000		12,200,000
Capitalized Computer Software, Amortization		700,000	$ 700,000	$ 1,418,000	$ 1,400,000
Number of Operating Segments				3
Number of Reportable Segments				1
Goodwill and Intangible Asset Impairment, Total	$ 0
Amortization of Debt Issuance Costs			32,000		100,000
Realized Gain (Loss), Foreign Currency Transaction, before Tax		(400,000)	$ (600,000)	$ (900,000)	$ (1,100,000)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares			319,000		216,000
Revenue, Remaining Performance Obligation, Amount		5,900,000		5,900,000
Provision for Doubtful Accounts				0
Contract with Customer, Asset, after Allowance for Credit Loss, Total		0		0
Contract with Customer, Liability		8,400,000		8,400,000		8,800,000
Deferred Profit		3,327,000		3,327,000		3,586,000	[1]
Deferred Profit Long-term		4,600,000		4,600,000		4,900,000
Accumulated Other Comprehensive Income (Loss), Net of Tax		$ (46,953,000)		$ (46,953,000)		$ (34,779,000)	[1]
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Asset, Useful Life (Year)		7 years		7 years
Minimum [Member]
Standard Product Warranty Term (Month)				12 months
Maximum [Member]
Standard Product Warranty Term (Month)				36 months
Building [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)		30 years		30 years
Building [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)		40 years		40 years
Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)		5 years		5 years
Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)		15 years		15 years
Machinery, Equipment and Software [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)		3 years		3 years
Machinery, Equipment and Software [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)		10 years		10 years
[1]Derived from December 30, 2023 audited financial statements

Note 1 - Summary of Significa_4

Note 1 - Summary of Significant Accounting Policies - Inventories (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Raw materials and purchased parts	$ 95,407	$ 103,118
Work in process	26,217	26,820
Finished goods	24,450	25,855
Total inventories	$ 146,074	$ 155,793	[1]
[1]Derived from December 30, 2023 audited financial statements

Note 1 - Summary of Significa_5

Note 1 - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Property, plant and equipment	$ 159,606	$ 155,809
Less accumulated depreciation and amortization	(84,699)	(86,724)
Property, plant and equipment, net	74,907	69,085	[1]
Land and Land Improvements [Member]
Property, plant and equipment	6,999	7,301
Building and Building Improvements [Member]
Property, plant and equipment	46,846	39,677
Machinery and Equipment [Member]
Property, plant and equipment	$ 105,761	$ 108,831
[1]Derived from December 30, 2023 audited financial statements

Note 1 - Summary of Significa_6

Note 1 - Summary of Significant Accounting Policies - Reported Share-based Compensation in Consolidated Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Share-based compensation of continuing operations	$ 5,583	$ 4,432	$ 10,211	$ 8,346
Income tax effect	8	(62)	211	(2,838)
Total share-based compensation, net	5,591	4,370	10,422	5,508
Cost of Sales [Member]
Share-based compensation of continuing operations	262	216	489	396
Research and Development Expense [Member]
Share-based compensation of continuing operations	1,001	819	1,835	1,685
Selling, General and Administrative Expenses [Member]
Share-based compensation of continuing operations	$ 4,320	$ 3,397	$ 7,887	$ 6,265

Note 1 - Summary of Significa_7

Note 1 - Summary of Significant Accounting Policies - Computation of Basic and Diluted Income (Loss) Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Weighted average common shares (in shares)	46,965	47,618	47,049	47,481
Effect of dilutive securities (in shares)	0	410	0	618
Weighted Average Number of Shares Outstanding, Diluted	46,965	48,028	47,049	48,099

Note 1 - Summary of Significa_8

Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Net sales	$ 104,701	$ 168,921	$ 212,315	$ 348,292
UNITED STATES
Net sales	17,173	15,750	31,815	34,493
CHINA
Net sales	19,072	28,394	30,816	49,504
Malaysia [Member]
Net sales	13,791	23,258	30,690	55,153
SINGAPORE
Net sales	12,929	13,988	24,993	24,694
PHILIPPINES
Net sales	9,708	25,359	21,550	57,149
Rest of the World [Member]
Net sales	32,028	62,172	72,451	127,299
Systems [Member]
Net sales	35,272	87,312	72,583	190,296
Non-systems [Member]
Net sales	$ 69,429	$ 81,609	$ 139,732	$ 157,996

Note 1 - Summary of Significa_9

Note 1 - Summary of Significant Accounting Policies - Significant Customer Concentration Information (Details) - Customer Concentration Risk [Member] - Revenue Benchmark [Member] - Semiconductor Test and Inspection [Member]	3 Months Ended	6 Months Ended
	Jul. 01, 2023	Jul. 01, 2023
Customers individually accounting for more than 10% of net sales	2	1
One Customer [Member]
Percentage of net sales	25%	13%

Note 2 - Business Acquisition_3

Note 2 - Business Acquisition, Goodwill and Purchased Intangible Assets (Details Textual) $ in Thousands, $ in Millions			1 Months Ended		3 Months Ended		6 Months Ended
	Oct. 02, 2023 USD ($)	Oct. 02, 2023 SGD ($)	Jan. 31, 2024 USD ($)	Jan. 31, 2024 SGD ($)	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($)	Jun. 29, 2024 USD ($)	Jun. 29, 2024 SGD ($)	Jul. 01, 2023 USD ($)	Mar. 30, 2024 USD ($)	Mar. 30, 2024 SGD ($)	Dec. 30, 2023 USD ($)	[1]	Oct. 02, 2023 SGD ($)
Other Accrued Liabilities, Noncurrent					$ 7,680		$ 7,680					$ 8,262
Amortization of Intangible Assets					$ 9,748	$ 9,006	19,543		$ 17,760
Equiptest Engineering Pte Ltd. (“EQT”) [Member]
Payments to Acquire Businesses, Gross	$ 48,300	$ 66
Business Combination, Consideration Transferred	49,900	$ 68.3					$ 50,300	$ 68.8
Cash Acquired from Acquisition			$ 600	$ 0.8
Equiptest Engineering Pte Ltd. (“EQT”) [Member] | EQT Retention Sum Liability [Member]
Business Combination, Retention Sum Liability for Potential Adjustments	$ 1,600													$ 2.2
Other Accrued Liabilities, Noncurrent										$ 1,300	$ 1.7
[1]Derived from December 30, 2023 audited financial statements

Note 2 - Business Acquisition_4

Note 2 - Business Acquisition, Goodwill and Purchased Intangible Assets - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023	[1]	Oct. 02, 2023	Dec. 31, 2022
Goodwill	$ 237,476	$ 241,658			$ 213,539
Equiptest Engineering Pte Ltd. (“EQT”) [Member]
Current assets, including cash received				$ 10,135
Property, plant and equipment				538
Intangible assets				34,500
Goodwill				15,377
Total assets acquired				60,550
Liabilities assumed				(10,203)
Net assets acquired				$ 50,347
[1]Derived from December 30, 2023 audited financial statements

Note 2 - Business Acquisition_5

Note 2 - Business Acquisition, Goodwill and Purchased Intangible Assets - Preliminary Allocation of Intangible Assets (Details) - Equiptest Engineering Pte Ltd. (“EQT”) [Member] $ in Millions	Oct. 02, 2023 USD ($)
Intangible assets, estimated fair value	$ 34.5
Developed Technology Rights [Member]
Finite-lived intangible assets, estimated fair value	$ 20.6
Finite-lived intangible assets, average useful life (Year)	8 years
Customer Relationships [Member]
Finite-lived intangible assets, estimated fair value	$ 12.9
Finite-lived intangible assets, average useful life (Year)	10 years
Order or Production Backlog [Member]
Finite-lived intangible assets, estimated fair value	$ 0.1
Finite-lived intangible assets, average useful life (Year)	1 year
Trademarks and Trade Names [Member]
Finite-lived intangible assets, estimated fair value	$ 0.9
Finite-lived intangible assets, average useful life (Year)	5 years

Note 2 - Goodwill and Purchased

Note 2 - Goodwill and Purchased Intangible Assets - Summary of Borrowings (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 29, 2024		Dec. 30, 2023
Beginning balance	$ 241,658	[1]	$ 213,539
Additions			24,132
Impact of currency exchange	(4,182)		3,987
Ending balance	$ 237,476		$ 241,658	[1]
[1]Derived from December 30, 2023 audited financial statements

Note 2 - Goodwill and Purchas_2

Note 2 - Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Gross Carrying Amount, finite-lived intangible assets	$ 325,597	$ 329,301
Accumulated Amortization	194,675	177,531
Developed Technology Rights [Member]
Gross Carrying Amount, finite-lived intangible assets	231,036	233,623
Accumulated Amortization	$ 150,332	137,168
Remaining Useful Life (Year)	3 years 10 months 24 days
Customer Relationships [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 73,132	73,759
Accumulated Amortization	$ 32,092	28,932
Remaining Useful Life (Year)	6 years 7 months 6 days
Trade Names [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 21,110	21,569
Accumulated Amortization	$ 12,012	11,231
Remaining Useful Life (Year)	5 years
Order or Production Backlog [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 100	100
Accumulated Amortization	$ 75	25
Remaining Useful Life (Year)	3 months 18 days
Noncompete Agreements [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 219	250
Accumulated Amortization	$ 164	$ 175
Remaining Useful Life (Year)	2 years 6 months

Note 3 - Borrowings and Credi_3

Note 3 - Borrowings and Credit Agreements (Details Textual) $ in Thousands, € in Millions, ¥ in Millions, SFr in Millions				3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 09, 2024 USD ($)	Jul. 01, 2023	Oct. 01, 2018 USD ($)	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($)	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($)	Dec. 30, 2023 USD ($)	Jun. 29, 2024 JPY (¥)	Jun. 29, 2024 CHF (SFr)	Dec. 30, 2023 EUR (€)	Jun. 30, 2020 EUR (€)
Long-Term Debt, Current Maturities				$ 2,378		$ 2,378		$ 6,324
Repayments of Long-Term Debt						30,224	$ 36,458
Gain (Loss) on Extinguishment of Debt				0	$ 0	(241)	(369)
Long-Term Line of Credit				1,243		1,243		1,773
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]		Secured Overnight Financing Rate (SOFR) [Member]	London Interbank Offered Rate (LIBOR) 1 [Member]
Ismeca [Member]
Line of Credit Facility, Maximum Borrowing Capacity | SFr										SFr 2
Long-Term Line of Credit				$ 0		$ 0		0
Number of Available Lines of Credit				1		1			1	1
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity | ¥									¥ 960
Long-Term Line of Credit				$ 1,200		$ 1,200			¥ 200
Secured Term Loan Facility [Member]
Debt Instrument, Face Amount			$ 350,000
Debt Instrument, Amortization, Percentage of Principal Amount			0.25%
Debt Instrument, Basis Spread on Variable Rate		3%	3%
Long-Term Debt								29,100
Long-Term Debt, Current Maturities								3,400
Repayments of Long-Term Debt	$ 29,300						34,100
Deferred Debt Issuance Cost, Writeoff	$ 200
Extinguishment of Debt, Amount							34,100
Gain (Loss) on Extinguishment of Debt							(400)
Extinguishment of Debt Decrease Deferred Financing Costs							$ 400
Kita Term Loans [Member]
Long-Term Debt				1,700		1,700		2,100
Long-Term Debt, Current Maturities				$ 200		$ 200		200
Kita Term Loans [Member] | Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage				0.05%		0.05%			0.05%	0.05%
Kita Term Loans [Member] | Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage				0.55%		0.55%			0.55%	0.55%
Loan Facilities [Member] | Construction Loans [Member]
Debt Instrument, Face Amount | €												€ 10.1
Long-Term Debt				$ 7,000		$ 7,000		7,700
Long-Term Debt, Current Maturities				$ 1,000		$ 1,000		$ 1,000
First Facility [Member] | Construction Loans [Member]
Debt Instrument, Face Amount | €											€ 3.4
Debt Instrument, Interest Rate, Stated Percentage								0.80%			0.80%
Debt Instrument, Term (Year)								10 years
Second Facility [Member] | Construction Loans [Member]
Debt Instrument, Face Amount | €											€ 5.2
Debt Instrument, Interest Rate, Stated Percentage								1.05%			1.05%
Debt Instrument, Term (Year)								15 years
Third Facility [Member] | Construction Loans [Member]
Debt Instrument, Interest Rate, Stated Percentage								1.20%			1.20%
Debt Instrument, Term (Year)								10 years
Debt Instrument, Collateral Amount | €											€ 0.9

Note 3 - Borrowings and Credi_4

Note 3 - Borrowings and Credit Agreements - Summary of Borrowings (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Lines of Credit	$ 1,243	$ 1,773
Total debt	9,970	40,876
Less: financing fees and discount	0	(249)
Less: current portion	(2,378)	(6,324)
Total long-term debt	7,592	34,303
Secured Term Loan Facility [Member]
Long term Debt	0	29,327
Less: current portion		(3,400)
Kita Term Loans [Member]
Long term Debt	1,749	2,095
Less: current portion	(200)	(200)
Construction Loan [Member]
Long term Debt	$ 6,978	$ 7,681

Note 4 - Restructuring Charge_2

Note 4 - Restructuring Charges (Details Textual) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jul. 01, 2023	Jul. 01, 2023
MCT Integration Program [Member]
Restructuring Expenses	$ 0.4	$ 1.3

Note 4 - Restructuring Charge_3

Note 4 - Restructuring Charges - Charges Related to the Wind Down Plan (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Costs accrued	$ 13	$ 416	$ 22	$ 1,304
Integration Program [Member] | Employee Severance [Member]
Accrued restructuring, balance				0
Costs accrued				1,217
Amounts paid or charged				(813)
Accrued restructuring, balance		404		404
Integration Program [Member] | Other Restructuring [Member]
Accrued restructuring, balance				0
Costs accrued				87
Amounts paid or charged				(49)
Accrued restructuring, balance		38		38
Integration Program [Member] | Employee Severance and Other Exit Costs [Member]
Accrued restructuring, balance				0
Costs accrued				1,304
Amounts paid or charged				(862)
Accrued restructuring, balance		$ 442		$ 442

Note 5 - Financial Instrument_3

Note 5 - Financial Instruments Measured at Fair Value (Details Textual) - USD ($) $ in Millions	Jun. 29, 2024	Dec. 30, 2023
Debt Securities, Available-for-Sale, Unrealized Loss Position, Amortized Cost	$ 30.6	$ 38.5
Debt Securities, Available-for-Sale, Unrealized Loss Position	$ 30.5	$ 38.4

Note 5 - Financial Instrument_4

Note 5 - Financial Instruments Measured at Fair Value - Short-term Investments by Security Type (Details) - USD ($) $ in Thousands		Jun. 29, 2024	Dec. 30, 2023
Amortized cost		$ 59,351	$ 90,100
Gross unrealized gains		34	215
Gross unrealized losses	[1]	56	141
Short-term investments		59,329	90,174
Estimated fair value		59,329	90,174
Corporate Debt Securities [Member]
Amortized cost	[2]	32,822	45,105
Gross unrealized gains	[2]	29	147
Gross unrealized losses	[1],[2]	37	15
Short-term investments	[2]	32,814	45,237
Estimated fair value	[2]	32,814	45,237
US Treasury Securities [Member]
Amortized cost		13,471	20,439
Gross unrealized gains		0	26
Gross unrealized losses	[1]	17	116
Short-term investments		13,454	20,349
Estimated fair value		13,454	20,349
Certificates of Deposit [Member]
Amortized cost		8,170	15,468
Gross unrealized gains		1	20
Gross unrealized losses	[1]	1	0
Short-term investments		8,170	15,488
Estimated fair value		8,170	15,488
Asset-Backed Securities [Member]
Amortized cost		3,856	8,017
Gross unrealized gains		3	17
Gross unrealized losses		1	10
Short-term investments		3,858	8,024
Estimated fair value		3,858	8,024
Debt Security, Government, Non-US [Member]
Amortized cost		702	741
Gross unrealized gains		0	0
Gross unrealized losses	[1]	0	0
Short-term investments		702	741
Estimated fair value		702	741
US States and Political Subdivisions Debt Securities [Member]
Amortized cost		330	330
Gross unrealized gains		1	5
Gross unrealized losses		0	0
Short-term investments		331	335
Estimated fair value		$ 331	$ 335
[1]As of June 29, 2024, the cost and fair value of investments with loss positions was approximately $30.6 million and $30.5 million, respectively. As of December 30, 2023, the cost and fair value of investments with loss positions was approximately $38.5 million and $38.4 million, respectively. We evaluated the nature of these investments, credit worthiness of the issuer and the duration of these impairments to determine if a credit loss exists. We have the ability and intent to hold these investments to maturity.[2]Corporate debt securities include investments in financial and other corporate institutions. No single issuer represents a significant portion of the total corporate debt securities portfolio.

Note 5 - Financial Instrument_5

Note 5 - Financial Instruments Measured at Fair Value - Effective Maturities of Short-term Investments (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Due in one year or less, amortized cost	$ 40,377	$ 57,981
Due in one year or less, fair value	40,346	57,887
Due after one year through five years, amortized cost	18,974	31,378
Due after one year through five years, fair value	18,983	31,546
Due after five years through ten years, amortized cost	0	741
Due after five years through ten years	0	741
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	59,351	90,100
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	$ 59,329	$ 90,174

Note 5 - Financial Instrument_6

Note 5 - Financial Instruments Measured at Fair Value - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands		Jun. 29, 2024	Dec. 30, 2023
Short-term investments		$ 59,329	$ 90,174
Corporate Debt Securities [Member]
Short-term investments	[1]	32,814	45,237
US Treasury Securities [Member]
Short-term investments		13,454	20,349
Certificates of Deposit [Member]
Short-term investments		8,170	15,488
Asset-Backed Securities [Member]
Short-term investments		3,858	8,024
Debt Security, Government, Non-US [Member]
Short-term investments		702	741
US States and Political Subdivisions Debt Securities [Member]
Short-term investments		331	335
Fair Value, Recurring [Member]
Assets, Fair Value Disclosure		262,397	335,698
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Short-term investments		33,563	51,949
Fair Value, Recurring [Member] | US Treasury Securities [Member]
Short-term investments		13,454	20,349
Fair Value, Recurring [Member] | Certificates of Deposit [Member]
Short-term investments		8,170	15,488
Fair Value, Recurring [Member] | Asset-Backed Securities [Member]
Short-term investments		3,858	8,024
Fair Value, Recurring [Member] | Debt Security, Government, Non-US [Member]
Short-term investments		702	741
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Short-term investments		331	335
Fair Value, Recurring [Member] | Cash [Member]
Cash and cash equivalents		169,955	157,697
Fair Value, Recurring [Member] | Money Market Funds [Member]
Cash and cash equivalents		32,364	81,115
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure		169,955	157,697
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Certificates of Deposit [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Asset-Backed Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Debt Security, Government, Non-US [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Cash [Member]
Cash and cash equivalents		169,955	157,697
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
Cash and cash equivalents		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure		92,442	178,001
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Short-term investments		33,563	51,949
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]
Short-term investments		13,454	20,349
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member]
Short-term investments		8,170	15,488
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-Backed Securities [Member]
Short-term investments		3,858	8,024
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Security, Government, Non-US [Member]
Short-term investments		702	741
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]
Short-term investments		331	335
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Cash [Member]
Cash and cash equivalents		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Cash and cash equivalents		32,364	81,115
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Certificates of Deposit [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-Backed Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Debt Security, Government, Non-US [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Cash [Member]
Cash and cash equivalents		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]
Cash and cash equivalents		$ 0	$ 0
[1]Corporate debt securities include investments in financial and other corporate institutions. No single issuer represents a significant portion of the total corporate debt securities portfolio.

Note 6 - Employee Benefit Pla_2

Note 6 - Employee Benefit Plans (Details Textual) $ in Millions	6 Months Ended
	Jun. 29, 2024 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)	0
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	408,720
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)	350,198
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)	35,650
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)	906,880
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding | $	$ 30
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms (Year)	1 year 4 months 24 days
Restricted Stock Units (RSUs) [Member] | Vesting Over One Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	1 year
Restricted Stock Units (RSUs) [Member] | Vesting Over Four Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	198,989
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)	62,680
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)	8,881
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)	535,450
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding | $	$ 17.7
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms (Year)	1 year 9 months 18 days
Performance Shares [Member] | Vest on the Third Anniversary of Awards Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	100%
Minimum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Available for Issue	0%
Maximum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Available for Issue	200%
Equity Incentive Plan 2005 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	2,944,895
Equity Incentive Plan 2005 [Member] | Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Equity Incentive Plan 2005 [Member] | Minimum [Member] | Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	1 year
Equity Incentive Plan 2005 [Member] | Maximum [Member] | Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Employee Stock Purchase Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	721,973
Percentage of Fair Value to Determine Price of Common Stock	85%
Stock Issued During Period, Shares, New Issues (in shares)	77,696

Note 7 - Derivative Financial_3

Note 7 - Derivative Financial Instruments - Foreign Currency Forward Contracts Outstanding (Details) - Jun. 29, 2024 - Not Designated as Hedging Instrument [Member] € in Thousands, ¥ in Thousands, SFr in Thousands, ₩ in Millions, $ in Millions	USD ($)	EUR (€)	JPY (¥)	CHF (SFr)	KRW (₩)
Euro Foreign Exchange Forward [Member] | Long [Member]
Contract amount	$ 48.5	€ 45,224
Swiss Franc Foreign Exchange Forward [Member] | Long [Member]
Contract amount	13.2			SFr 11,834
South Korean Won Forward Exchange Forward [Member] | Long [Member]
Contract amount	2				₩ 2,760.8
Japanese Yen Foreign Exchange Forward [Member] | Long [Member]
Contract amount	0.5		¥ 80,135
Foreign Exchange Forward [Member]
Contract amount	$ 64.2

Note 7 - Derivative Financial_4

Note 7 - Derivative Financial Instruments - Locations and Amounts of Gains (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Income Statement [Abstract]
Gain (Loss), Foreign Currency Transaction, before Tax	$ (373)	$ (645)	$ (914)	$ (1,085)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Gain (Loss), Foreign Currency Transaction, before Tax
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Foreign exchange forward contracts	$ (1,247)	$ 132	$ (5,325)	$ 1,213

Note 8 - Equity (Details Textua

Note 8 - Equity (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023	Oct. 25, 2022	Oct. 28, 2021
Stock Repurchase Program, Authorized Amount						$ 70
Stock Repurchase Program, Additional Authorized Amount					$ 70
Stock Repurchased During Period, Shares (in shares)	267,000	77,203	600,504	176,885
Stock Repurchased During Period, Value	$ 8.2	$ 2.7	$ 18.9	$ 6.2
Share Repurchase Program, Remaining Authorized, Amount	$ 39.4		$ 39.4

Note 10 - Leases (Details Textu

Note 10 - Leases (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 30, 2024	Jun. 29, 2024	Jul. 01, 2023	Dec. 30, 2023
Lessee, Operating Lease, Renewal Term (Year)		25 years
Finance Lease, Right-of-Use Asset, Accumulated Amortization		$ 400		$ 300
Increase (Decrease) in Operating Lease Liability		(3,215)	$ (3,357)
Increase (Decrease) in Operating Lease, Right-of-Use Assets		(3,202)	$ (3,536)
Leased Facility in Malaysia [Member]
Payments to Acquire Productive Assets	$ 8,800
Increase (Decrease) in Operating Lease Liability		(400)
Increase (Decrease) in Finance Lease Assets		8,800
Increase (Decrease) in Finance Lease Liability		7,900
Increase (Decrease) in Operating Lease, Right-of-Use Assets		$ (400)
Minimum [Member]
Lessee, Lease, Remaining Term of Contract (Year)		1 year
Maximum [Member]
Lessee, Lease, Remaining Term of Contract (Year)		34 years

Note 10 - Leases - Balance Shee

Note 10 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands		Jun. 29, 2024	Dec. 30, 2023
Assets [Abstract]
Property, Plant and Equipment, Net		$ 74,907	$ 69,085	[1]
Liabilities, Current [Abstract]
Other Accrued Liabilities, Current		20,976	14,589	[1]
Liabilities, Noncurrent [Abstract]
Lease Liability, Noncurrent		11,408	13,175	[1]
Operating lease assets		14,896	16,778	[1]
Finance lease assets	[2]	9,039	247
Total lease assets		23,935	17,025
Operating, current		4,863	5,122
Finance, current		$ 7,984	11
Operating, noncurrent		Lease Liability, Noncurrent
Operating, noncurrent		$ 11,400	13,160
Finance, noncurrent		Lease Liability, Noncurrent
Finance, noncurrent		$ 9	15
Total lease liabilities		$ 24,256	$ 18,308
Operating leases (Year)		5 years 3 months 18 days	5 years 6 months
Finance leases (Year)		1 month 6 days	1 year 8 months 12 days
Operating leases		6.40%	6.40%
Finance leases		3.20%	4%
[1]Derived from December 30, 2023 audited financial statements[2]Finance lease assets are recorded net of accumulated amortization of $0.4 million and $0.3 million as of June 29, 2024 and December 30, 2023, respectively. During the first quarter of fiscal 2024, we executed an agreement to purchase our leased facility in Malaysia for $8.8 million, with the expectation that the title will transfer during 2024. We treated this transaction as a lease modification, and changed the classification to a finance lease, reducing our operating lease assets and liabilities by $0.4 million and increasing our finance lease assets and current lease liabilities by $8.8 million and $7.9 million, respectively.

Note 10 - Leases - Lease Expens

Note 10 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Operating leases	$ 1,563	$ 1,680	$ 3,181	$ 3,359
Variable lease expense	577	563	1,147	1,122
Short-term operating leases	1	7	2	13
Amortization of leased assets	22	28	43	54
Interest on lease liabilities	80	1	133	1
Sublease income	(1)	(8)	(4)	(18)
Net lease cost	$ 2,242	$ 2,271	$ 4,502	$ 4,531

Note 10 - Leases - Future Minim

Note 10 - Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
2024, operating leases	$ 2,906
2024, finance leases	8,003
2024, total	10,909
2025, operating leases	5,571
2025, finance leases	11
2025, total	5,582
2026, operating leases	2,861
2026, finance leases	4
2026, total	2,865
2027, operating leases	1,590
2027, finance leases	0
2027, total	1,590
2028, operating leases	1,269
2028, finance leases	0
2028, total	1,269
Thereafter, operating leases	5,497
Thereafter, finance leases	0
Thereafter, total	5,497
Total lease payments, operating leases	19,694
Total lease payments, finance leases	8,018
Total lease payments, total	27,712
Less: Interest, operating leases	(3,431)
Less: Interest, finance leases	(25)
Less: Interest, total	(3,456)
Present value of lease liabilities, operating leases	16,263
Present value of lease liabilities, finance leases	7,993
Present value of lease liabilities, total	$ 24,256	$ 18,308

Note 10 - Leases - Cash Flow In

Note 10 - Leases - Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023
Operating cash flows from operating leases	$ 3,275	$ 3,353
Operating cash flows from finance leases	129	1
Financing cash flows from finance leases	11	39
Leased assets obtained in exchange for new finance lease liabilities	8,844	0
Leased assets obtained in exchange for new operating lease liabilities	1,357	409
MCT Worldwide, LLC [Member]
Financing lease assets acquired in MCT acquisition	0	19
Operating lease assets acquired in MCT acquisition	$ 0	$ 130

Note 12 - Guarantees (Details T

Note 12 - Guarantees (Details Textual) - USD ($) $ in Millions	6 Months Ended
	Jun. 29, 2024	Dec. 30, 2023
Non-current Other Accrued Liabilities [Member]
Product Warranty Accrual, Noncurrent	$ 0.2	$ 0.4
Minimum [Member]
Standard Product Warranty Term (Month)	12 months
Maximum [Member]
Standard Product Warranty Term (Month)	36 months

Note 12 - Guarantees - Changes

Note 12 - Guarantees - Changes in Accrued Warranty (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Balance at beginning of period	$ 4,295	$ 6,115	$ 5,017	$ 6,214
Warranty expense accruals	896	1,742	1,802	3,722
Warranty payments	(1,407)	(2,323)	(3,035)	(4,469)
Liability acquired	0	0	0	67
Balance at end of period	$ 3,784	$ 5,534	$ 3,784	$ 5,534