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Note 1 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 28, 2025

Notes Tables

Schedule of Inventory, Current [Table Text Block]

		June 28,				December 28,
		2025				2024
Raw materials and purchased parts		$	91,547			$	94,970
Work in process			21,435				25,833
Finished goods			24,849				21,058
Total inventories		$	137,831			$	141,861

Property, Plant and Equipment [Table Text Block]

		June 28,				December 28,
		2025				2024
Land and land improvements		$	12,373			$	6,941
Buildings and building improvements			47,335				47,733
Machinery and equipment			109,027				104,767
			168,735				159,441
Less accumulated depreciation and amortization			(91,624	)			(84,655	)
Property, plant and equipment, net		$	77,111			$	74,786

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

		Three Months Ended								Six Months Ended
		June 28,				June 29,				June 28,				June 29,
		2025				2024				2025				2024
Cost of sales		$	398			$	262			$	723			$	489
Research and development			1,514				1,001				2,733				1,835
Selling, general and administrative			3,763				4,320				8,449				7,887
Total share-based compensation			5,675				5,583				11,905				10,211
Income tax effect			1,424				8				(391	)			211
Total share-based compensation, net		$	7,099			$	5,591			$	11,514			$	10,422

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

		Three Months Ended								Six Months Ended
		June 28,				June 29,				June 28,				June 29,
		2025				2024				2025				2024
Weighted average common shares			46,662				46,965				46,653				47,049
Effect of dilutive securities			-				-				-				-
			46,662				46,965				46,653				47,049

Disaggregation of Revenue [Table Text Block]

		Three Months Ended								Six Months Ended
Disaggregated Net Sales		June 28, 2025				June 29, 2024				June 28, 2025				June 29, 2024
Systems		$	39,643			$	35,272			$	75,285			$	72,583
Non-systems			68,037				69,429				129,192				139,732
Total net sales		$	107,680			$	104,701			$	204,477			$	212,315

		Three Months Ended								Six Months Ended
Disaggregated Net Sales		June 28, 2025				June 29, 2024				June 28, 2025				June 29, 2024
China		$	16,971			$	19,072			$	31,099			$	30,816
Malaysia			10,847				13,791				29,009				30,690
Philippines			15,803				9,708				28,989				21,550
Taiwan			22,581				6,242				28,868				11,431
United States			7,988				17,173				16,744				31,815
Singapore			5,258				12,929				10,135				24,993
Rest of the World			28,232				25,786				59,633				61,020
Total net sales		$	107,680			$	104,701			$	204,477			$	212,315

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

Three Months Ended

Six Months Ended

June 28,

June 29,

June 28,

June 29,

2025

2024

2025

2024

Customers individually representing more than 10% of net sales

*

*

one

*

Percentage of net sales

*

*

10%

*

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