Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Total	Class A Common Stock	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Income (Loss)	Non-Controlling Interests
Beginning Balance at Dec. 31, 2020	$ 687,846		$ 267		$ (163,658)	$ 349,363	$ (33,127)	$ 1,414	$ 533,587
Beginning Balance (in shares) at Dec. 31, 2020			27,293,085	194	(3,476,731)
Net Income	86,652						49,827		36,825
Other Comprehensive Income (Loss)	509							271	238
Dividends Declared	(2,500)						(2,500)
Tax Distributions	(8,305)								(8,305)
Equity-Based Compensation	57,238					53,368			3,870
Net Share Settlement	(20,415)					(20,415)
Deliveries of Vested Shares of Common Stock	2		$ 2
Deliveries of Vested Shares of Common Stock (in shares)			1,828,316
Change in Ownership Interest	(63,976)					(11,441)			(52,535)
Change in Ownership Interest (in shares)				(26)
Treasury Stock Purchases	(80,294)				$ (80,294)
Treasury Stock Purchases (in shares)					(1,151,782)
Ending Balance at Jun. 30, 2021	656,757		$ 269		$ (243,952)	370,875	14,200	1,685	513,680
Ending Balance (in shares) at Jun. 30, 2021			29,121,401	168	(4,628,513)
Beginning Balance at Mar. 31, 2021	646,576		$ 269		$ (209,554)	377,825	(7,715)	1,481	484,270
Beginning Balance (in shares) at Mar. 31, 2021			29,111,807	170	(4,134,638)
Net Income	42,856						23,145		19,711
Other Comprehensive Income (Loss)	385							204	181
Dividends Declared	(1,230)						(1,230)
Tax Distributions	(8,305)								(8,305)
Equity-Based Compensation	27,290					25,430			1,860
Deliveries of Vested Shares of Common Stock (in shares)			9,594
Change in Ownership Interest	(16,417)					(32,380)			15,963
Change in Ownership Interest (in shares)				(2)
Treasury Stock Purchases	(34,398)				$ (34,398)
Treasury Stock Purchases (in shares)					(493,875)
Ending Balance at Jun. 30, 2021	656,757		$ 269		$ (243,952)	370,875	14,200	1,685	513,680
Ending Balance (in shares) at Jun. 30, 2021			29,121,401	168	(4,628,513)
Beginning Balance at Dec. 31, 2021	637,572		$ 292		$ (267,000)	391,242	(4,933)	631	517,340
Beginning Balance (in shares) at Dec. 31, 2021			29,248,457	159	(4,929,044)
Net Income	79,661						44,872		34,789
Other Comprehensive Income (Loss)	(5,095)							(2,798)	(2,297)
Dividends Declared	(12,366)						(12,366)
Tax Distributions	(7,310)								(7,310)
Equity-Based Compensation	95,370					84,528			10,842
Net Share Settlement	(15,387)					(15,387)
Deliveries of Vested Shares of Common Stock			$ 13			(13)
Deliveries of Vested Shares of Common Stock (in shares)			1,349,123
Change in Ownership Interest	(10,868)					(14,409)			3,541
Change in Ownership Interest (in shares)				2
Treasury Stock Purchases	(83,926)				$ (83,926)
Treasury Stock Purchases (in shares)		(1,300,000)			(1,291,005)
Ending Balance at Jun. 30, 2022	677,651		$ 305		$ (350,926)	445,961	27,573	(2,167)	556,905
Ending Balance (in shares) at Jun. 30, 2022			30,597,580	161	(6,220,049)
Beginning Balance at Mar. 31, 2022	655,036		$ 305		$ (323,569)	438,634	14,503	(156)	525,319
Beginning Balance (in shares) at Mar. 31, 2022			30,593,822	164	(5,815,973)
Net Income	35,193						19,168		16,025
Other Comprehensive Income (Loss)	(3,659)							(2,011)	(1,648)
Dividends Declared	(6,098)						(6,098)
Tax Distributions	(7,310)								(7,310)
Equity-Based Compensation	36,301					30,811			5,490
Net Share Settlement	(20)					(20)
Deliveries of Vested Shares of Common Stock (in shares)			3,758
Change in Ownership Interest	(4,435)					(23,464)			19,029
Change in Ownership Interest (in shares)				(3)
Treasury Stock Purchases	(27,357)				$ (27,357)
Treasury Stock Purchases (in shares)					(404,076)
Ending Balance at Jun. 30, 2022	$ 677,651		$ 305		$ (350,926)	$ 445,961	$ 27,573	$ (2,167)	$ 556,905
Ending Balance (in shares) at Jun. 30, 2022			30,597,580	161	(6,220,049)