Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock Class A common stock	Common Stock Class B common stock	Common Stock Class C common stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings (Deficit)	Non-controlling Interest	Total
Balance at Dec. 31, 2020	$ 428	$ 5	$ 0	$ 63,342	$ (15,187)	$ (21,814)	$ (36,005)	$ (9,231)
Balance (in shares) at Dec. 31, 2020	42,799,000	45,999,000	0		(572,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	$ 0	$ 0	$ 0	2,988	$ 0	0	3,121	6,109
Exercise of stock options	$ 0	0	0	(417)	$ 2,407	0	0	1,990
Exercise of stock options (in shares)	0				91,000
Non-controlling interest adjustment for capital contribution of proceeds from the exercise of stock options	$ 0	0	0	(1,012)	$ 0	0	1,012	0
Vesting of restricted stock units	$ 0	0	0	(1,220)	$ 1,318	0	(98)	0
Vesting of restricted stock units (in shares)	0				49,000
Repurchases of Class A common stock for withholding taxes on vested RSUs	$ 0	0	0	(25)	$ (189)	0	0	(214)
Repurchases of Class A common stock for withholding taxes on vested RSUs (in shares)	0				(7,000)
Redemption of LLC common units for Class A common stock	$ 30	$ (1)	0	22,926	$ 0	0	2,336	25,291
Redemption of LLC common units for Class A common stock (in shares)	3,029,000	(2,848,000)
Distributions to holders of LLC common units	$ 0	$ 0	0	0	0	0	(16,926)	(16,926)
Dividends	0	0	0	0	0	(10,353)	0	(10,353)
Establishment of liabilities under the Tax Receivable Agreement and related changes to deferred tax assets associated with that liability	0	0	0	(19,441)	0	0	0	(19,441)
Non-controlling interest adjustment	0	0	0	2,068	0	0	(2,068)	0
Net income	0	0	0	0	0	62,322	85,103	147,425
Balance at Mar. 31, 2021	$ 458	$ 4	$ 0	69,209	$ (11,651)	30,155	36,475	124,650
Balance (in shares) at Mar. 31, 2021	45,828,000	43,151,000	0		(439,000)
Balance at Dec. 31, 2021	$ 475	$ 4	$ 0	98,113	$ (130,006)	189,471	75,837	233,894
Balance (in shares) at Dec. 31, 2021	47,521,000	41,466,000	0		(3,390,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	$ 0	$ 0	$ 0	4,572	$ 0	0	5,735	10,307
Exercise of stock options	0	0	0	(166)	$ 397	0	0	231
Exercise of stock options (in shares)					11,000
Non-controlling interest adjustment for capital contribution of proceeds from the exercise of stock options	0	0	0	(111)	$ 0	0	111	0
Vesting of restricted stock units	0	0	0	(4,067)	$ 4,749	0	(682)	0
Vesting of restricted stock units (in shares)					130,000
Repurchases of Class A common stock for withholding taxes on vested RSUs	0	0	0	243	$ (1,481)	0	0	$ (1,238)
Repurchases of Class A common stock for withholding taxes on vested RSUs (in shares)					(41,000)
Stock award to employee (In shares)								99,907
Repurchases of Class A common stock to treasury stock	0	0	0	28,398	$ (79,757)	0	(37,774)	$ (89,133)
Repurchases of Class A common stock to treasury stock					(2,593,000)
Redemption of LLC common units for Class A common stock	$ 1	0	0	416	$ 0	0	(45)	372
Redemption of LLC common units for Class A common stock (in shares)	50,000
Distributions to holders of LLC common units	$ 0	0	0	0	0	0	(24,836)	(24,836)
Dividends	0	0	0	0	0	(26,427)	0	(26,427)
Establishment of liabilities under the Tax Receivable Agreement and related changes to deferred tax assets associated with that liability	0	0	0	(299)	0	0	0	(299)
Non-controlling interest adjustment	0	0	0	(1,028)	0	0	1,028	0
Net income	0	0	0	0	0	44,730	62,569	107,299
Balance at Mar. 31, 2022	$ 476	$ 4	$ 0	$ 126,071	$ (206,098)	$ 207,774	$ 81,943	$ 210,170
Balance (in shares) at Mar. 31, 2022	47,571,000	41,466,000	0		(5,883,000)