CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated (Deficit) Earnings	Accumulated Other Comprehensive Income
Balance at period start (in shares) at Dec. 31, 2021		60,162
Balance at period start at Dec. 31, 2021	$ 265,700	$ 602	$ 821,713	$ (559,117)	$ 2,502
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation (in shares)		412
Stock-based compensation	3,658	$ 3	3,655
Purchase of common stock for retirement (in shares)		(462)
Purchase of common stock for retirement	(6,390)	$ (4)	(1,431)	(4,955)
Other comprehensive income (loss)	0
Net income (loss)	(137,051)			(137,051)
Balance at period end (in shares) at Mar. 31, 2022		60,112
Balance at period end at Mar. 31, 2022	125,917	$ 601	823,937	(701,123)	2,502
Balance at period start (in shares) at Dec. 31, 2022		60,471
Balance at period start at Dec. 31, 2022	644,537	$ 604	836,491	(200,687)	8,129
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation (in shares)		340
Stock-based compensation	2,317		2,317
Purchase of common stock for retirement (in shares)		(81)
Purchase of common stock for retirement	(3,114)		(3,114)
Exercise of stock options (in shares)		300
Exercise of stock options	6,374	$ 6	6,368
Other comprehensive income (loss)	(11)				(11)
Net income (loss)	237,890			237,890
Balance at period end (in shares) at Mar. 31, 2023		61,030
Balance at period end at Mar. 31, 2023	$ 887,993	$ 610	$ 842,062	$ 37,203	$ 8,118