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, 2019	$ 169,862	$ 111	$ 49,204	$ 157,525	$ (16,795)	$ (20,183)	$ 0
Increase (Decrease) in Stockholders' Equity
Net income from continuing operations	7,582			7,582
Other comprehensive income (loss), net of tax:
Pension liability adjustment	(1,049)					(1,049)
Foreign currency translation adjustment	1,500					1,500
Unrealized derivative loss on cash flow hedges	(809)					(809)
Cash flow hedges reclassified to earnings	273					273
Issuance of common shares net of shares withheld for taxes	(1,665)		(5,757)		4,092
Stock-based compensation	1,136		1,136
Ending balance at Dec. 31, 2020	176,830	111	44,583	165,107	(12,703)	(20,268)	0
Increase (Decrease) in Stockholders' Equity
Net income from continuing operations	3,543			3,626			(83)
Other comprehensive income (loss), net of tax:
Pension liability adjustment	1,491					1,491
Foreign currency translation adjustment	(920)					(902)	(18)
Unrealized derivative loss on cash flow hedges	131					131
Cash flow hedges reclassified to earnings	703					703
Issuance of common shares net of shares withheld for taxes	(732)		(3,256)		2,524
Stock-based compensation	1,945		1,945
Investment of noncontrolling interest	619						619
Ending balance at Dec. 31, 2021	$ 183,610	$ 111	$ 43,272	$ 168,733	$ (10,179)	$ (18,845)	$ 518