CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Apr. 01, 2022
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 2,710	$ 9,602
Defined benefit plans:
Net change in plan assets	(1,177)	(4,068)
Reclassification into other income (expense), net	(52)	52
Investments available for sale:
Change in unrealized gain (loss)	116
Reclassification into other income (expense), net	(2)
Foreign currency translation gain (loss)	(129)	(1,014)
Tax effect	151	(121)
Other comprehensive income (loss), net of tax	(1,093)	2,985
Comprehensive income	$ 1,617	$ 12,587