Consolidated Statement of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Balance at Dec. 31, 2021	$ 1,372,468	$ 1,203	$ 1,869,955	$ (498,690)
Balance (in shares) at Dec. 31, 2021		120,285
Net income	19,003			19,003
Retirement of common stock	(5,144)	$ (5)	(5,139)
Retirement of common stock (in shares)		(518)
Dividends on RSUs	(77)			(77)
Restricted stock compensation, net of forfeitures	5,267		5,267
Restricted stock grants		$ 18	(18)
Restricted stock grants (in shares)		1,819
Balance at Mar. 31, 2022	1,391,517	$ 1,216	1,870,065	(479,764)
Balance (in shares) at Mar. 31, 2022		121,586
Balance at Dec. 31, 2021	1,372,468	$ 1,203	1,869,955	(498,690)
Balance (in shares) at Dec. 31, 2021		120,285
Net income	97,883
Balance at Sep. 30, 2022	1,402,175	$ 1,150	1,801,867	(400,842)
Balance (in shares) at Sep. 30, 2022		114,981
Balance at Mar. 31, 2022	1,391,517	$ 1,216	1,870,065	(479,764)
Balance (in shares) at Mar. 31, 2022		121,586
Net income	10,562			10,562
Retirement of common stock	(37,599)	$ (30)	(37,569)
Retirement of common stock (in shares)		(2,985)
Forfeiture of dividends on RSUs	7			7
Restricted stock compensation, net of forfeitures	4,453		4,453
Restricted stock grants (in shares)		19
Balance at Jun. 30, 2022	1,368,940	$ 1,186	1,836,949	(469,195)
Balance (in shares) at Jun. 30, 2022		118,620
Net income	68,318			68,318
Retirement of common stock	(37,105)	$ (36)	(37,069)
Retirement of common stock (in shares)		(3,635)
Forfeiture of dividends on RSUs	35			35
Restricted stock compensation, net of forfeitures	1,987		1,987
Restricted stock grants (in shares)		(4)
Balance at Sep. 30, 2022	1,402,175	$ 1,150	1,801,867	(400,842)
Balance (in shares) at Sep. 30, 2022		114,981
Balance at Dec. 31, 2022	1,432,408	$ 1,150	1,807,689	(376,431)
Balance (in shares) at Dec. 31, 2022		114,988
Net income	12,400			12,400
Retirement of common stock	(29,954)	$ (30)	(29,924)
Retirement of common stock (in shares)		(2,980)
Dividends on RSUs	(6)			(6)
Restricted stock compensation, net of forfeitures	4,884		4,884
Restricted stock grants		$ 17	(17)
Restricted stock grants (in shares)		1,677
Balance at Mar. 31, 2023	1,419,732	$ 1,137	1,782,632	(364,037)
Balance (in shares) at Mar. 31, 2023		113,685
Balance at Dec. 31, 2022	1,432,408	$ 1,150	1,807,689	(376,431)
Balance (in shares) at Dec. 31, 2022		114,988
Net income	41,122
Balance at Sep. 30, 2023	1,458,302	$ 1,136	1,792,481	(335,315)
Balance (in shares) at Sep. 30, 2023		113,605
Balance at Mar. 31, 2023	1,419,732	$ 1,137	1,782,632	(364,037)
Balance (in shares) at Mar. 31, 2023		113,685
Net income	14,830			14,830
Retirement of common stock	(699)	$ (1)	(698)
Retirement of common stock (in shares)		(84)
Restricted stock compensation, net of forfeitures	5,273		5,273
Restricted stock grants (in shares)		4
Balance at Jun. 30, 2023	1,439,136	$ 1,136	1,787,207	(349,207)
Balance (in shares) at Jun. 30, 2023		113,605
Net income	13,892			13,892
Retirement of common stock	(11)		(11)
Restricted stock compensation, net of forfeitures	5,285		5,285
Balance at Sep. 30, 2023	$ 1,458,302	$ 1,136	$ 1,792,481	$ (335,315)
Balance (in shares) at Sep. 30, 2023		113,605