Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2022	Apr. 02, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 2,240	$ 1,508
Foreign currency translation adjustment	(1,329)	(2,245)
Change in pension, net of taxes of $33 and $38 in the 2022 and 2021 first quarters, respectively	(331)	(550)
Other comprehensive loss	(998)	(1,695)
Comprehensive income (loss)	$ 1,242	$ (187)