Acquisition Activity (Pro Forma Information) (Details) - DTS Acquisition - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Pro forma net revenues	$ 331,155	$ 301,577
Pro forma net earnings attributable to VPG stockholders	$ 25,109	$ 14,289
Pro forma basic earnings per share attributable to VPG stockholders (in dollars per share)	$ 1.84	$ 1.05
Pro forma diluted earnings per share attributable to VPG stockholders (in dollars per share)	$ 1.84	$ 1.05