Consolidated Condensed Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Statement of Comprehensive Income [Abstract]
Net earnings	$ 8,351	$ 10,880	$ 15,333	$ 17,564
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(1,680)	(7,943)	(178)	(9,735)
Pension and other postretirement actuarial items	(1)	81	2	162
Other comprehensive loss	(1,681)	(7,862)	(176)	(9,573)
Comprehensive income	6,670	3,018	15,157	7,991
Less: comprehensive income attributable to noncontrolling interests	115	125	133	453
Comprehensive income attributable to VPG stockholders	$ 6,555	$ 2,893	$ 15,024	$ 7,538