CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Common Stock in Treasury
Beginning balance (in shares) at Dec. 31, 2018			17,253,011
Beginning balance at Dec. 31, 2018	$ 376,609	$ (327)	$ 19	$ 251,329	$ 175,353	$ (327)	$ (18,483)	$ (31,609)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(62,147)				(62,147)
Currency translation adjustment, net of income tax	1,084						1,084
Stock-based compensation	11,071			11,071
Common stock issued, net of shares withheld for employee taxes (in shares)			323,607
Common stock issued, net of shares withheld for employee taxes	5,702			5,468				234
Ending balance (in shares) at Dec. 31, 2019			17,576,618
Ending balance at Dec. 31, 2019	331,992		$ 19	267,868	112,879		(17,399)	(31,375)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	629				629
Currency translation adjustment, net of income tax	7,239						7,239
Stock-based compensation	8,314			8,314
Common stock issued, net of shares withheld for employee taxes (in shares)			414,089
Common stock issued, net of shares withheld for employee taxes	$ 12,129			11,797				332
Ending balance (in shares) at Dec. 31, 2020	17,990,707		17,990,707
Ending balance at Dec. 31, 2020	$ 360,303		$ 19	287,979	113,508		(10,160)	(31,043)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(39,964)				(39,964)
Currency translation adjustment, net of income tax	(7,214)						(7,214)
Stock-based compensation	11,456			11,456
Common stock issued, net of shares withheld for employee taxes (in shares)			214,929
Common stock issued, net of shares withheld for employee taxes	$ 1,878		$ 1	1,626				251
Ending balance (in shares) at Dec. 31, 2021	18,205,636		18,205,636
Ending balance at Dec. 31, 2021	$ 326,459		$ 20	$ 301,061	$ 73,544		$ (17,374)	$ (30,792)