CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock
Beginning balance at Dec. 31, 2020	$ 364,761		$ 158	$ 1,188,673		$ (640,909)		$ (183,161)
Beginning balance (in shares) at Dec. 31, 2020			15,766,000					2,641,000
Increase (Decrease) in Stockholders' Equity
Net income and comprehensive income	19,049					19,049
Non-cash compensation	16,436			16,436
Issuance of common stock for stock options, restricted stock awards and restricted stock units, net of withholding taxes	(4,801)			(4,801)
Issuance of common stock for stock options, restricted stock awards and restricted stock units, net of withholding taxes (in shares)			31,000
Other	(2)			(2)
Ending balance at Mar. 31, 2021	395,443		$ 158	1,200,306		(621,860)		$ (183,161)
Ending balance (in shares) at Mar. 31, 2021			15,797,000					2,641,000
Beginning balance at Dec. 31, 2020	364,761		$ 158	1,188,673		(640,909)		$ (183,161)
Beginning balance (in shares) at Dec. 31, 2020			15,766,000					2,641,000
Ending balance at Dec. 31, 2021	$ 447,992	$ (65,303)	$ 161	1,242,794	$ (109,750)	(571,794)	$ 44,447	$ (223,169)
Ending balance (in shares) at Dec. 31, 2021			16,071,000					2,976,000
Increase (Decrease) in Stockholders' Equity
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06 [Member]
Net income and comprehensive income	$ (10,826)					(10,826)
Non-cash compensation	15,080			15,080
Purchase of treasury stock	$ (43,009)							$ (43,009)
Purchase of treasury stock (in shares)	379,895							379,000
Issuance of common stock for stock options, restricted stock awards and restricted stock units, net of withholding taxes	$ (3,086)			(3,086)
Issuance of common stock for stock options, restricted stock awards and restricted stock units, net of withholding taxes (in shares)			49,000
Ending balance at Mar. 31, 2022	$ 340,848		$ 161	$ 1,145,038		$ (538,173)		$ (266,178)
Ending balance (in shares) at Mar. 31, 2022			16,120,000					3,355,000