CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND REDEEMABLE NONCONTROLLING INTEREST - USD ($) $ in Thousands	Total	Parent	Common Stock	Additional Paid-In Capital	Retained Earnings	Other Cumulative Comprehensive Loss	Treasury Stock and Company Stock Held for Deferred Compensation
Beginning balances (in shares) at Dec. 31, 2020			15,917,559				528,274
Beginning balances at Dec. 31, 2020		$ 196,914	$ 796	$ 117,387	$ 115,657	$ (22,962)	$ (13,964)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	$ 432	432			432
Change in cumulative foreign currency translation adjustment	(1,967)	(1,967)				(1,967)
Shares issued in connection with public offering (in shares)			397,820
Shares issued in connection with at-the-market offering program		25,262	$ 20	25,242
Shares issued in connection with stock compensation plans (in shares)			84,434
Shares issued in connection with stock compensation plans		0	$ 4	(4)
Stock-based compensation		1,469		1,469
Treasury stock activity (in shares)							(38,069)
Treasury stock activity		(3,680)					$ (3,680)
Ending balances (in shares) at Mar. 31, 2021			16,399,813				566,343
Ending balances at Mar. 31, 2021		218,430	$ 820	144,094	116,089	(24,929)	$ (17,644)
Increase (Decrease) in Temporary Equity [Roll Forward]
Stock-based compensation		1,469		1,469
Beginning balances (in shares) at Dec. 31, 2021			19,920,829				570,415
Beginning balances at Dec. 31, 2021	360,525	360,525	$ 996	294,515	111,031	(26,538)	$ (19,479)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(4,280)	(3,288)			(3,288)
Change in cumulative foreign currency translation adjustment	(1,204)	(1,204)				(1,204)
Shares issued in connection with stock compensation plans (in shares)			163,443
Shares issued in connection with stock compensation plans			$ 8	(8)
Adjustment of redeemable noncontrolling interest to redemption value	5,717	(5,717)			(5,717)
Stock-based compensation	102	2,267		2,267
Treasury stock activity (in shares)							(16,773)
Treasury stock activity		(1,088)					$ (1,088)
Ending balances (in shares) at Mar. 31, 2022			20,084,272				587,188
Ending balances at Mar. 31, 2022	351,495	351,495	$ 1,004	296,774	102,026	$ (27,742)	$ (20,567)
Redeemable Non-Controlling interest, beginning balance at Dec. 31, 2021	197,196
Increase (Decrease) in Temporary Equity [Roll Forward]
Net loss	(992)
Escrow adjustment related to redeemable noncontrolling interest	(427)
Adjustment of redeemable noncontrolling interest to redemption value	5,717	(5,717)			$ (5,717)
Stock-based compensation	102	$ 2,267		$ 2,267
Distribution to redeemable noncontrolling interest holder	(4,400)
Redeemable Non-Controlling interest, ending balance at Mar. 31, 2022	$ 197,196