CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (3,339)	$ 2,710
Defined benefit plans:
Net change in plan assets	232	(1,177)
Reclassification into other income (expense), net	(17)	(52)
Investments available for sale:
Change in unrealized gain (loss)	(36)	116
Reclassification into other income (expense), net	3	(2)
Foreign currency translation loss	(1,100)	(129)
Tax effect	319	151
Other comprehensive loss, net of tax	(599)	(1,093)
Comprehensive income (loss)	$ (3,938)	$ 1,617