Consolidated Condensed Statements of Equity - USD ($) $ in Thousands	Total	Total VPG, Inc. Stockholders' Equity	Common Stock	Class B Convertible Common Stock	Treasury Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Balance, beginning at Dec. 31, 2020	$ 257,857	$ 257,823	$ 1,317	$ 103	$ (8,765)	$ 197,764	$ 100,075	$ (32,671)	$ 34
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	14,455	14,260					14,260		195
Other comprehensive income (loss)	(2,878)	(2,878)						(2,878)
Share-based compensation expense	1,328	1,328				1,328
Restricted stock issuances	(852)	(852)	5			(857)
Distributions to noncontrolling interests	(244)								(244)
Balance, ending at Oct. 02, 2021	269,666	269,681	1,322	103	(8,765)	198,235	114,335	(35,549)	(15)
Balance, beginning at Jul. 03, 2021	265,918	265,926	1,322	103	(8,765)	197,856	108,956	(33,546)	(8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	5,449	5,379					5,379		70
Other comprehensive income (loss)	(2,003)	(2,003)						(2,003)
Share-based compensation expense	386	386				386
Restricted stock issuances	(7)	(7)	0			(7)
Distributions to noncontrolling interests	(77)								(77)
Balance, ending at Oct. 02, 2021	269,666	269,681	1,322	103	(8,765)	198,235	114,335	(35,549)	(15)
Balance, beginning at Dec. 31, 2021	277,042	277,099	1,322	103	(8,765)	199,151	120,296	(35,008)	(57)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	27,712	27,229					27,229		483
Other comprehensive income (loss)	(17,987)	(17,987)						(17,987)
Share-based compensation expense	1,583	1,583				1,583
Restricted stock issuances	(423)	(423)	3			(426)
Purchase of treasury stock	(1,061)	(1,061)			(1,061)
Distributions to noncontrolling interests	(366)								(366)
Balance, ending at Oct. 01, 2022	286,500	286,440	1,325	103	(9,826)	200,308	147,525	(52,995)	60
Balance, beginning at Jul. 02, 2022	285,350	285,238	1,325	103	(8,765)	199,749	137,407	(44,581)	112
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	10,148	10,118					10,118		30
Other comprehensive income (loss)	(8,414)	(8,414)						(8,414)
Share-based compensation expense	559	559				559
Purchase of treasury stock	(1,061)	(1,061)			(1,061)
Distributions to noncontrolling interests	(82)								(82)
Balance, ending at Oct. 01, 2022	$ 286,500	$ 286,440	$ 1,325	$ 103	$ (9,826)	$ 200,308	$ 147,525	$ (52,995)	$ 60