CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Total	Class A and B Common Stock [Member]	Additional Paid-in Capital [Member]	Purchase Price Of Excess Of Predecessor Basis, Net Of Tax [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock, Common [Member]
Beginning Balance at Dec. 31, 2020	$ 1,157,923	$ 761	$ 185,716	$ (15,458)	$ 1,253,160	$ (191)	$ (266,065)
Beginning Balance (in shares) at Dec. 31, 2020		76,099,092					(7,675,084)
Stock tendered for payments of withholding taxes	(9,123)						$ (9,123)
Stock tendered for payments of withholding taxes (in shares)							(268,658)
Purchase of treasury stock from related party (Note 17)	0
Issuance of restricted stock awards, net of forfeitures			(16,858)				$ 16,858
Issuance of restricted stock awards, net of forfeitures (in shares)							984,710
Share-based compensation expense	20,056		20,056
Net income	171,474				171,474
Foreign currency translation adjustment	(16)					(16)
Ending Balance at Dec. 31, 2021	1,340,314	$ 761	188,914	(15,458)	1,424,634	(207)	$ (258,330)
Ending Balance (in shares) at Dec. 31, 2021		76,099,092					(6,959,032)
Stock tendered for payments of withholding taxes	(8,312)						$ (8,312)
Stock tendered for payments of withholding taxes (in shares)							(206,094)
Purchase of treasury shares	(75,000)						$ (75,000)
Purchase of treasury shares (in shares)							(1,890,994)
Purchase of treasury stock from related party (Note 17)	(34,767)						$ (34,767)
Purchase of treasury stock from related party (Note 17) (in shares)							(860,242)
Issuance of restricted stock awards, net of forfeitures			(1,517)				$ 1,517
Issuance of restricted stock awards, net of forfeitures (in shares)							260,318
Share-based compensation expense	20,426		20,426
Net income	356,948				356,948
Foreign currency translation adjustment	(7)					(7)
Ending Balance at Dec. 31, 2022	1,599,602	$ 761	207,823	(15,458)	1,781,582	(214)	$ (374,892)
Ending Balance (in shares) at Dec. 31, 2022		76,099,092					(9,656,044)
Stock tendered for payments of withholding taxes	(10,148)						$ (10,148)
Stock tendered for payments of withholding taxes (in shares)							(257,630)
Purchase of treasury shares	(143,770)						$ (143,770)
Purchase of treasury shares (in shares)							(3,762,968)
Purchase of treasury stock from related party (Note 17)	0
Issuance of restricted stock awards, net of forfeitures			(3,883)				$ 3,883
Issuance of restricted stock awards, net of forfeitures (in shares)							353,374
Share-based compensation expense	21,348		21,348
Net income	167,528				167,528
Foreign currency translation adjustment	85					85
Ending Balance at Dec. 31, 2023	$ 1,634,645	$ 761	$ 225,288	$ (15,458)	$ 1,949,110	$ (129)	$ (524,927)
Ending Balance (in shares) at Dec. 31, 2023		76,099,092					(13,323,268)