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 Accumulated (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	43,796						26,682		17,114
Other Comprehensive Income (Loss)	124							67	57
Dividends Declared	(1,270)						(1,270)
Equity-Based Compensation	29,948					27,938			2,010
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)			1,818,722
Change in Ownership Interest	(47,559)					20,939			(68,498)
Change in Ownership Interest (in shares)				(24)
Treasury Stock Purchases	(45,896)				$ (45,896)
Treasury Stock Purchases (in shares)					(657,907)
Ending Balance at Mar. 31, 2021	646,576		$ 269		$ (209,554)	377,825	(7,715)	1,481	484,270
Ending Balance (in shares) at Mar. 31, 2021			29,111,807	170	(4,134,638)
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	44,468						25,704		18,764
Other Comprehensive Income (Loss)	(1,436)							(787)	(649)
Dividends Declared	(6,268)						(6,268)
Equity-Based Compensation	59,069					53,717			5,352
Net Share Settlement	(15,367)					(15,367)
Deliveries of Vested Shares of Common Stock			$ 13			(13)
Deliveries of Vested Shares of Common Stock (in shares)			1,345,365
Change in Ownership Interest	(6,433)					9,055			(15,488)
Change in Ownership Interest (in shares)				5
Treasury Stock Purchases	(56,569)				$ (56,569)
Treasury Stock Purchases (in shares)		(900,000)			(886,929)
Ending Balance at Mar. 31, 2022	$ 655,036		$ 305		$ (323,569)	$ 438,634	$ 14,503	$ (156)	$ 525,319
Ending Balance (in shares) at Mar. 31, 2022			30,593,822	164	(5,815,973)