Consolidated Condensed Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 6,684	$ 4,943
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(1,792)	(1,800)
Pension and other postretirement actuarial items	81	209
Other comprehensive loss	(1,711)	(1,591)
Comprehensive income	4,973	3,352
Less: comprehensive income (loss) attributable to noncontrolling interests	328	(18)
Comprehensive income attributable to VPG stockholders	$ 4,645	$ 3,370