Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Noncontrolling Interest
Beginning balance at Dec. 31, 2020	$ 176,830	$ 111	$ 44,583	$ 165,107	$ (12,703)	$ (20,268)	$ 0
Increase (Decrease) in Stockholders' Equity
Net loss	(1,270)			(1,258)			(12)
Other comprehensive loss, net of tax:
Pension liability adjustment	91					91
Foreign currency translation adjustment	423					453	(30)
Unrealized derivative gain on cash flow hedges	0
Cash flow hedges reclassified to earnings	136					136
Issuance of common shares, net of share withheld for taxes	(547)		(1,467)		920
Stock-based compensation	827		827
Investment of noncontrolling interest	396						396
Ending balance at Mar. 31, 2021	176,886	111	43,943	163,849	(11,783)	(19,588)	354
Beginning balance at Dec. 31, 2021	183,610	111	43,272	168,733	(10,179)	(18,845)	518
Increase (Decrease) in Stockholders' Equity
Net loss	(1,586)			(1,566)			(20)
Other comprehensive loss, net of tax:
Pension liability adjustment	49					49
Foreign currency translation adjustment	(880)					(965)	85
Unrealized derivative gain on cash flow hedges	551					551
Cash flow hedges reclassified to earnings	93					93
Issuance of common shares, net of share withheld for taxes	(398)		(1,377)		979
Stock-based compensation	258		258
Ending balance at Mar. 31, 2022	$ 181,697	$ 111	$ 42,153	$ 167,167	$ (9,200)	$ (19,117)	$ 583