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
Increase (Decrease) in Stockholders' Equity
Beginning balance, treasury (in shares)								2,976,000
Beginning balance at Dec. 31, 2021	$ 447,992	$ (65,303)	$ 161	$ 1,242,794	$ (109,750)	$ (571,794)	$ 44,447	$ (223,169)
Beginning balance, common (in shares) at Dec. 31, 2021			16,071,000
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(10,826)					(10,826)
Comprehensive income (loss)	(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 and cancellations (in shares)			49,000
Ending balance at Mar. 31, 2022	340,848		$ 161	1,145,038		(538,173)		$ (266,178)
Ending balance, common (in shares) at Mar. 31, 2022			16,120,000
Ending balance, treasury (in shares) at Mar. 31, 2022								3,355,000
Increase (Decrease) in Stockholders' Equity
Beginning balance, treasury (in shares)								3,355,000
Beginning balance, treasury (in shares)								3,355,000
Beginning balance at Dec. 31, 2022	$ 207,940		$ 162	1,189,255		(715,299)		$ (266,178)
Beginning balance, common (in shares) at Dec. 31, 2022	12,811,718		16,167,000
Increase (Decrease) in Stockholders' Equity
Net income (loss)	$ 13,457					13,457
Comprehensive income (loss)	13,457					13,457
Non-cash compensation	$ 11,274			11,274
Purchase of treasury stock (in shares)	0
Issuance of common stock for stock options, restricted stock awards and restricted stock units, net of withholding taxes	$ (1,693)		$ 1	(1,694)
Issuance of common stock for stock options, restricted stock awards and restricted stock units, net of withholding taxes and cancellations (in shares)			98,000
Other	1			1
Ending balance at Mar. 31, 2023	$ 230,979		$ 163	$ 1,198,836		$ (701,842)		$ (266,178)
Ending balance, common (in shares) at Mar. 31, 2023	12,909,711		16,265,000
Ending balance, treasury (in shares) at Mar. 31, 2023								3,355,000
Increase (Decrease) in Stockholders' Equity
Beginning balance, treasury (in shares)								3,355,000