Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjustment	Accumulated (Deficit)
Beginning balance (in shares) at Dec. 31, 2020			59,590,422
Beginning balance, treasury stock (in shares) at Dec. 31, 2020					(26,678,410)
Beginning balance at Dec. 31, 2020	$ 196,775	$ (8,545)	$ 596	$ 1,059,624	$ (468,613)	$ 0	$ (8,545)	$ (394,832)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			482,890
Exercise of stock options	(401)		$ 4	(405)
Exercise of stock warrants (in shares)			570,469
Exercise of stock warrants	13,895		$ 6	13,889
Stock compensation expense	6,232			6,232
Net income	96,489							96,489
Ending balance (in shares) at Sep. 30, 2021			60,643,781
Ending balance, treasury stock (in shares) at Sep. 30, 2021					(26,678,410)
Ending balance at Sep. 30, 2021	304,445		$ 606	1,079,340	$ (468,613)	(8,545)		(298,343)
Beginning balance (in shares) at Jun. 30, 2021			60,391,597
Beginning balance, treasury stock (in shares) at Jun. 30, 2021					(26,678,410)
Beginning balance at Jun. 30, 2021	269,703	(4,100)	$ 604	1,076,124	$ (468,613)	(4,445)	(4,100)	(333,967)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			243,615
Exercise of stock options	669		$ 2	667
Exercise of stock warrants (in shares)			8,569
Exercise of stock warrants	209			209
Stock compensation expense	2,340			2,340
Net income	35,624							35,624
Ending balance (in shares) at Sep. 30, 2021			60,643,781
Ending balance, treasury stock (in shares) at Sep. 30, 2021					(26,678,410)
Ending balance at Sep. 30, 2021	$ 304,445		$ 606	1,079,340	$ (468,613)	(8,545)		(298,343)
Beginning balance (in shares) at Dec. 31, 2021	34,145,311		60,830,853
Beginning balance, treasury stock (in shares) at Dec. 31, 2021	(26,685,542)				(26,685,542)
Beginning balance at Dec. 31, 2021	$ 314,715	(12,611)	$ 608	1,084,288	$ (468,879)	(8,047)	(12,611)	(293,255)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			327,256
Exercise of stock options	4,825		$ 4	4,821
Exercise of stock warrants (in shares)			2,622
Exercise of stock warrants	64			64
Stock compensation expense	10,140			10,140
Net income	$ 104,793							104,793
Ending balance (in shares) at Sep. 30, 2022	34,475,189		61,160,731
Ending balance, treasury stock (in shares) at Sep. 30, 2022	(26,685,542)				(26,685,542)
Ending balance at Sep. 30, 2022	$ 421,926		$ 612	1,099,313	$ (468,879)	(20,658)		(188,462)
Beginning balance (in shares) at Jun. 30, 2022			61,121,058
Beginning balance, treasury stock (in shares) at Jun. 30, 2022					(26,685,542)
Beginning balance at Jun. 30, 2022	411,614	$ (7,920)	$ 611	1,094,362	$ (468,879)	(12,738)	$ (7,920)	(201,742)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			37,051
Exercise of stock options	486		$ 1	485
Exercise of stock warrants (in shares)			2,622
Exercise of stock warrants	64			64
Stock compensation expense	4,402			4,402
Net income	$ 13,280							13,280
Ending balance (in shares) at Sep. 30, 2022	34,475,189		61,160,731
Ending balance, treasury stock (in shares) at Sep. 30, 2022	(26,685,542)				(26,685,542)
Ending balance at Sep. 30, 2022	$ 421,926		$ 612	$ 1,099,313	$ (468,879)	$ (20,658)		$ (188,462)