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Note 1 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 28, 2026

Notes Tables

Schedule of Inventory, Current [Table Text Block]

		March 28,				December 27,
		2026				2025
Raw materials and purchased parts		$	87,964			$	84,797
Work in process			23,855				23,388
Finished goods			18,986				20,821
Total inventories		$	130,805			$	129,006

Property, Plant, and Equipment [Table Text Block]

		March 28,				December 27,
		2026				2025
Land and land improvements		$	12,057			$	12,364
Buildings and building improvements			50,343				49,469
Machinery and equipment			104,346				103,273
			166,746				165,106
Less accumulated depreciation and amortization			(90,074	)			(88,119	)
Property, plant and equipment, net		$	76,672			$	76,987

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

		Three Months Ended
		March 28,				March 29,
		2026				2025
Cost of sales		$	274			$	325
Research and development			968				1,219
Selling, general and administrative			5,034				4,686
Total share-based compensation			6,276				6,230
Income tax effect			(163	)			(1,815	)
Total share-based compensation, net		$	6,113			$	4,415

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

		Three Months Ended
		March 28,				March 29,
		2026				2025
Weighted average common shares			46,996				46,645
Effect of dilutive securities			-				-
			46,996				46,645

Disaggregation of Revenue [Table Text Block]

		Three Months Ended
Disaggregated Net Sales		March 28, 2026				March 29, 2025
Systems		$	49,440			$	35,642
Non-systems			75,679				61,155
Total net sales		$	125,119			$	96,797

		Three Months Ended
Disaggregated Net Sales		March 28, 2026				March 29, 2025
Malaysia		$	20,839			$	18,162
Philippines			16,786				13,186
Taiwan			14,818				6,287
China			13,507				14,128
Rest of the World			59,169				45,034
Total net sales		$	125,119			$	96,797

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

		Three Months Ended
		March 28,				March 29,
		2026				2025
Customers individually representing more than 10% of net sales			*			one
Percentage of net sales			*			11%

X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

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