Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2019	$ (697,223)	$ (25)	$ 2,157	$ 810,856	$ (14,024)	$ 101,741
Balance (in shares) at Dec. 31, 2019			21,573		930
Net income (loss)	(37,615)					(37,615)
Restricted stock awards, forfeitures and shares repurchased for tax withholdings, net				(3,864)	$ 3,824	(40)
Restricted stock awards, forfeitures and shares repurchased for tax withholdings, net (in shares)					(242)
Stock-based compensation				590		590
Change in accounting at ownership interests	(1,801)					(1,801)
Balance at Dec. 31, 2020	(736,639)	(25)	$ 2,157	807,582	$ (10,200)	62,875
Balance (in shares) at Dec. 31, 2020			21,573		688
Net income (loss)	27,004					27,004
Restricted stock awards, forfeitures and shares repurchased for tax withholdings, net				(1,550)	$ 2,286	736
Restricted stock awards, forfeitures and shares repurchased for tax withholdings, net (in shares)					(161)
Stock-based compensation				606		606
Repurchases of common stock					$ (40,655)	(40,655)
Repurchases of common stock (in shares)					4,541
Balance at Dec. 31, 2021	$ (709,635)	$ (25)	$ 2,157	$ 806,638	$ (48,569)	$ 50,566
Balance (in shares) at Dec. 31, 2021			21,573		5,068