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 [Member]
Beginning Balance at Dec. 31, 2019	$ 1,075,279	$ 419	$ 179,637	$ (15,458)	$ 1,179,601	$ (186)	$ (268,734)
Beginning Balance (in shares) at Dec. 31, 2019		41,887,088					(7,870,888)
Stock tendered for payments of withholding taxes	(7,963)						$ (7,963)
Stock tendered for payments of withholding taxes (in shares)							(148,242)
Purchase of treasury stock from related party (Note 17)	0
Issuance of restricted stock awards, net of forfeitures			(10,632)				$ 10,632
Issuance of restricted stock awards, net of forfeitures (in shares)							344,046
Share-based compensation expense	17,053		17,053
Net income	73,559				73,559
Foreign currency translation adjustment	(5)					(5)
Ending Balance at Dec. 31, 2020	1,157,923	$ 419	186,058	(15,458)	1,253,160	(191)	$ (266,065)
Ending Balance (in shares) at Dec. 31, 2020		41,887,088					(7,675,084)
Stock tendered for payments of withholding taxes	(9,123)						$ 9,123
Stock tendered for payments of withholding taxes (in shares)							(134,329)
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)							492,355
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	$ 419	189,256	(15,458)	1,424,634	(207)	$ (258,330)
Ending Balance (in shares) at Dec. 31, 2021		41,887,088					(7,317,058)
Stock tendered for payments of withholding taxes	(8,312)						$ (8,312)
Stock tendered for payments of withholding taxes (in shares)							(103,047)
Purchase of treasury shares	$ (75,000)						$ (75,000)
Purchase of treasury shares (in shares)	1,478,665						(945,497)
Purchase of treasury stock from related party (Note 17)	$ (34,767)						$ (34,767)
Purchase of treasury stock from related party (Note 17) (in shares)							(430,121)
Issuance of restricted stock awards, net of forfeitures			(1,517)				$ 1,517
Issuance of restricted stock awards, net of forfeitures (in shares)							130,159
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	$ 419	$ 208,165	$ (15,458)	$ 1,781,582	$ (214)	$ (374,892)
Ending Balance (in shares) at Dec. 31, 2022		41,887,088					(8,665,564)