Consolidated Statements of Stockholders' Deficit - USD ($) shares in Thousands, $ in Thousands	Additional Paid-in Capital	Treasury Stock	Retained Deficit Cumulative Effect Adjustment	Retained Deficit	Non-controlling Interest Cumulative Effect Adjustment	Non-controlling Interest	Cumulative Effect Adjustment	Common Class A	Common Class B	Total
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of accounting standard	$ 42,520			$ 7,619		$ 21,252		$ 367	$ 5	$ 71,763
Balance at Dec. 31, 2017	42,520			7,619		21,252		$ 367	$ 5	71,763
Balance (in shares) at Dec. 31, 2017								36,749	50,837
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of accounting standard | ASU 2014-09			$ 1,310		$ 2,476		$ 3,786
Adoption of accounting standard	47,531			(3,370)		(11,621)		$ 372	$ 5	32,917
Equity-based compensation	14,088									14,088
Exercise of stock options	149									149
Exercise of stock options (in shares)								7
Non-controlling interest adjustment for capital contribution of proceeds from the exercise of stock options	(86)					86
Vesting of restricted stock units	881					(884)		$ 3
Vesting of restricted stock units (in shares)								298
Repurchases of Class A common stock for withholding taxes on vested RSUs	(1,364)							$ (1)		(1,365)
Repurchases of Class A common stock for withholding taxes on vested RSUs (in shares)								(77)
Disgorgement of short-swing profits by Section 16 officer	557									557
Redemption of LLC common units for Class A common stock	4,536					(153)		$ 3		4,386
Redemption of LLC common units for Class A common stock (in shares)								215	(130)
Distributions to holders of LLC common units						(101,755)				(101,755)
Dividends				(22,697)						(22,697)
Establishment of liabilities under the Tax Receivable Agreement and related changes to deferred tax assets associated with that liability	(1,576)									(1,576)
Non-controlling interest adjustment	(12,174)					12,174
Net income (loss)				10,398		55,183				65,581
Balance (ASU 2014-09) at Dec. 31, 2018			1,310		2,476		3,786
Balance at Dec. 31, 2018	47,531			(3,370)		(11,621)		$ 372	$ 5	32,917
Balance (in shares) at Dec. 31, 2018								37,192	50,707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of accounting standard | ASU 2014-09			1,310		2,476		3,786
Adoption of accounting standard	47,531			(3,370)		(11,621)		$ 372	$ 5	32,917
Adoption of accounting standard | ASU 2014-09			1,310		2,476		3,786
Adoption of accounting standard | ASU 2016-02			3,705		6,332		10,037
Adoption of accounting standard	50,152			(83,134)		(126,634)		375	5	32,917
Equity-based compensation	13,145									$ 13,145
Exercise of stock options (in shares)										0
Vesting of restricted stock units	736					(740)		$ 4
Vesting of restricted stock units (in shares)								417
Repurchases of Class A common stock for withholding taxes on vested RSUs	(1,477)							$ (1)		$ (1,478)
Repurchases of Class A common stock for withholding taxes on vested RSUs (in shares)								(126)
Redemption of LLC common units for Class A common stock	(478)									(478)
Redemption of LLC common units for Class A common stock (in shares)								6
Distributions to holders of LLC common units						(70,192)				(70,192)
Dividends				(22,878)						(22,878)
Establishment of liabilities under the Tax Receivable Agreement and related changes to deferred tax assets associated with that liability	(8)									(8)
Non-controlling interest adjustment	(9,297)					9,297
Net income (loss)				(60,591)		(59,710)				(120,301)
Balance (ASU 2016-02) at Dec. 31, 2019			3,705		6,332		10,037
Balance at Dec. 31, 2019	50,152			(83,134)		(126,634)		$ 375	$ 5	(159,236)
Balance (in shares) at Dec. 31, 2019								37,489	50,707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of accounting standard | ASU 2016-02			3,705		6,332		10,037
Adoption of accounting standard	50,152			(83,134)		(126,634)		$ 375	$ 5	(159,236)
Adoption of accounting standard | ASU 2016-02			$ 3,705		$ 6,332		$ 10,037
Adoption of accounting standard	63,342	$ (15,187)		(21,814)		(36,005)		428	$ 5	(159,236)
Equity-based compensation	20,661									20,661
Exercise of stock options	4,022	$ 611						$ 2		4,635
Exercise of stock options (in shares)		23						191
Non-controlling interest adjustment for capital contribution of proceeds from the exercise of stock options	(2,602)					2,602
Vesting of restricted stock units	(6,398)	$ 8,556				(2,161)		$ 3
Vesting of restricted stock units (in shares)		323						338
Repurchases of Class A common stock for withholding taxes on vested RSUs	(1,910)	$ (2,832)								(4,742)
Repurchases of Class A common stock for withholding taxes on vested RSUs (in shares)		(107)						(71)
Repurchases of Class A common stock to treasury stock	11,616	$ (21,522)				(11,616)				(21,522)
Repurchases of Class A common stock to treasury stock		(811)
Redemption of LLC common units for Class A common stock	25,565					7,529		$ 48		33,142
Redemption of LLC common units for Class A common stock (in shares)								4,852	(4,708)
Distributions to holders of LLC common units						(136,974)				(136,974)
Dividends				(61,025)						(61,025)
Establishment of liabilities under the Tax Receivable Agreement and related changes to deferred tax assets associated with that liability	(28,385)									(28,385)
Non-controlling interest adjustment	(9,379)					9,379
Net income (loss)				122,345		221,870				344,215
Balance at Dec. 31, 2020	63,342	$ (15,187)		(21,814)		(36,005)		$ 428	$ 5	(9,231)
Balance (in shares) at Dec. 31, 2020		(572)						42,799	45,999
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of accounting standard	$ 63,342	$ (15,187)		$ (21,814)		$ (36,005)		$ 428	$ 5	$ (9,231)