CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2020	$ 3,656	$ 49	$ 513,263	$ (464,085)	$ (28,182)	$ (17,389)
Comprehensive income	21,938			19,136		2,802
Exercise and vesting of share-based compensation awards	164		164
Tax withholding for share-based compensation	(2,502)		(2,502)
Share-based employee compensation expense	2,998		2,998
Balance at Mar. 31, 2021	26,254	49	513,923	(444,949)	(28,182)	(14,587)
Balance at Dec. 31, 2021	118,907	50	514,461	(359,171)	(28,182)	(8,251)
Comprehensive income	7,388			581		6,807
Exercise and vesting of share-based compensation awards	205		205
Tax withholding for share-based compensation	(472)		(472)
Share-based employee compensation expense	1,919		1,919
Balance at Mar. 31, 2022	$ 127,947	$ 50	$ 516,113	$ (358,590)	$ (28,182)	$ (1,444)