Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings (Deficit)	Treasury Stock
Beginning balance at Dec. 31, 2021	$ 462,386	$ 1,093	$ 634,929	$ (61,480)	$ 24,345	$ (136,501)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	(29,826)				(29,826)
Employee stock options, restricted stock and employee stock purchase plan	(2,363)	21	(835)		(1,023)	(526)
Stock-based compensation expense	5,102		5,102
Foreign currency translation, net of tax	(13,327)			(13,327)
Ending balance at Sep. 30, 2022	421,972	1,114	639,196	(74,807)	(6,504)	(137,027)
Beginning balance at Jun. 30, 2022	450,751	1,113	637,293	(68,801)	18,091	(136,945)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	(24,595)				(24,595)
Employee stock options, restricted stock and employee stock purchase plan	(82)	1	(1)			(82)
Stock-based compensation expense	1,904		1,904
Foreign currency translation, net of tax	(6,006)			(6,006)
Ending balance at Sep. 30, 2022	421,972	1,114	639,196	(74,807)	(6,504)	(137,027)
Beginning balance at Dec. 31, 2022	423,028	1,115	641,266	(67,186)	2,489	(154,656)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	14,992				14,992
Employee stock options, restricted stock and employee stock purchase plan	(1,730)	2	(7,895)		(6,040)	12,203
Stock-based compensation expense	4,967		4,967
Treasury shares purchased at cost	(26,167)					(26,167)
Foreign currency translation, net of tax	(1,123)			(1,123)
Ending balance at Sep. 30, 2023	413,967	1,117	638,338	(68,309)	11,441	(168,620)
Beginning balance at Jun. 30, 2023	414,133	1,117	637,435	(64,884)	3,903	(163,438)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	7,670				7,670
Employee stock options, restricted stock and employee stock purchase plan	(62)		(766)		(132)	836
Stock-based compensation expense	1,669		1,669
Treasury shares purchased at cost	(6,018)					(6,018)
Foreign currency translation, net of tax	(3,425)			(3,425)
Ending balance at Sep. 30, 2023	$ 413,967	$ 1,117	$ 638,338	$ (68,309)	$ 11,441	$ (168,620)