Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (130)	$ 2,040	$ 185	$ 4,280
Foreign currency translation adjustment	110	(3,238)	1,054	(4,567)
Change in pension, net of taxes of $24 and $45 in the 2023 and 2022 second quarters, respectively, and $40 and $78 in the first two quarters of 2023 and 2022, respectively	60	580	104	911
Other comprehensive income (loss)	170	(2,658)	1,158	(3,656)
Comprehensive income (loss)	$ 40	$ (618)	$ 1,343	$ 624