CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Warrants	Additional Paid-In Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020		35,928,000	6,734,000
Beginning balance at Dec. 31, 2020	$ 128,066	$ 36	$ 88,520	$ 1,062,220	$ (1,022,710)
Increase (Decrease) in Stockholders' Equity
Issuance of stock awards, net of cancellations (in shares)		6,000
Stock-based compensation	236			236
Issuance of common stock for general unsecured claims (in shares)		201,000
Issuance of warrants for general unsecured claims (in shares)			247,000
Cash paid for tax obligations on vested stock awards	(19)			(19)
Net income	35,043				35,043
Ending balance (in shares) at Mar. 31, 2021		36,135,000	6,981,000
Ending balance at Mar. 31, 2021	163,326	$ 36	$ 88,520	1,062,437	(987,667)
Beginning balance (in shares) at Dec. 31, 2020		35,928,000	6,734,000
Beginning balance at Dec. 31, 2020	128,066	$ 36	$ 88,520	1,062,220	(1,022,710)
Increase (Decrease) in Stockholders' Equity
Net income	51,295
Ending balance (in shares) at Jun. 30, 2021		36,560,000	6,981,000
Ending balance at Jun. 30, 2021	179,568	$ 37	$ 88,520	1,062,426	(971,415)
Beginning balance (in shares) at Mar. 31, 2021		36,135,000	6,981,000
Beginning balance at Mar. 31, 2021	163,326	$ 36	$ 88,520	1,062,437	(987,667)
Increase (Decrease) in Stockholders' Equity
Issuance of stock awards, net of cancellations (in shares)		425,000
Issuance of stock awards, net of cancellations	0	$ 1		(1)
Stock-based compensation	584			584
Cash paid for tax obligations on vested stock awards	(594)			(594)
Net income	16,252				16,252
Ending balance (in shares) at Jun. 30, 2021		36,560,000	6,981,000
Ending balance at Jun. 30, 2021	$ 179,568	$ 37	$ 88,520	1,062,426	(971,415)
Beginning balance (in shares) at Dec. 31, 2021	36,675,000	36,675,000	6,981,000
Beginning balance at Dec. 31, 2021	$ 245,322	$ 37	$ 88,520	1,062,737	(905,972)
Increase (Decrease) in Stockholders' Equity
Issuance of stock awards, net of cancellations (in shares)		51,000
Stock-based compensation	384			384
Cash paid for tax obligations on vested stock awards	(235)			(235)
Net income	34,724				34,724
Ending balance (in shares) at Mar. 31, 2022		36,726,000	6,981,000
Ending balance at Mar. 31, 2022	$ 280,195	$ 37	$ 88,520	1,062,886	(871,248)
Beginning balance (in shares) at Dec. 31, 2021	36,675,000	36,675,000	6,981,000
Beginning balance at Dec. 31, 2021	$ 245,322	$ 37	$ 88,520	1,062,737	(905,972)
Increase (Decrease) in Stockholders' Equity
Net income	$ 83,216
Ending balance (in shares) at Jun. 30, 2022	36,742,000	36,742,000	6,981,000
Ending balance at Jun. 30, 2022	$ 329,127	$ 37	$ 88,520	1,063,326	(822,756)
Beginning balance (in shares) at Mar. 31, 2022		36,726,000	6,981,000
Beginning balance at Mar. 31, 2022	280,195	$ 37	$ 88,520	1,062,886	(871,248)
Increase (Decrease) in Stockholders' Equity
Issuance of stock awards, net of cancellations (in shares)		16,000
Issuance of stock awards, net of cancellations	0	$ 0		0
Stock-based compensation	440			440
Net income	$ 48,492				48,492
Ending balance (in shares) at Jun. 30, 2022	36,742,000	36,742,000	6,981,000
Ending balance at Jun. 30, 2022	$ 329,127	$ 37	$ 88,520	$ 1,063,326	$ (822,756)