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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 28, 2025	Dec. 28, 2024
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 36	$ 4
Common stock, $0.001 par value:	$ 1.000	$ 1.000
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	77,111,430	77,114,633
Common stock, shares outstanding (in shares)	77,111,430	77,114,633
Goodwill	$ 200,858	$ 199,171
Probe Cards
Goodwill	177,369	177,369
Systems
Goodwill	$ 23,489	$ 21,802

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