Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Class A	Members’ Equity	Common Stock Class A	Common Stock Class B	Common Stock Class C	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Noncontrolling Interest
Balance at Dec. 31, 2016	$ 278,363		$ 279,056						$ (693)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(8,580)
Dividends declared								$ (500)
Foreign currency translation adjustment	908
Balance (in shares) at Dec. 31, 2017				35,938,000	173,624,000	42,945,000
Balance at Dec. 31, 2017	742,133			$ 36	$ 174	$ 43	$ 107,008	1,602	31	$ 633,239
Balance at Dec. 31, 2017			$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	29,318							4,052		25,266
Equity-based compensation expense	35,733						13,057			22,676
Issuance of common stock (in shares)		19,100,000		131,000
Issuance of common stock	(1,232)			$ 0			(1,232)
Distributions to noncontrolling interest	(11,617)									(11,617)
Dividends declared	(2,961)							(2,961)
Foreign currency translation adjustment	331								48	283
Issuance of restricted stock awards (in shares)				61,000
Issuance of restricted stock awards	$ 0
Exchanges of noncontrolling interest for Class A common stock (in shares)				19,088,000	(19,088,000)
Exchanges of noncontrolling interest for Class A common stock				$ 19	$ (19)		53,403			(53,403)
Repurchase of common units and cancellation of Class B common stock (in shares)	(6,100,000)				(6,055,000)
Repurchase of common units and cancellation of Class B common stock	$ (60,644)				$ (6)		(9,085)			(51,553)
Recognition of tax receivable agreement liability resulting from exchanges of noncontrolling interest for Class A common stock	(52,535)						(52,535)
Net deferred tax assets resulting from exchanges of noncontrolling interest for Class A common stock	29,512						29,512
Settlement of option loans	314						63			251
Balance (in shares) at Dec. 31, 2018				55,218,000	148,481,000	42,945,000
Balance at Dec. 31, 2018	708,352			$ 55	$ 149	$ 43	140,191	2,693	79	565,142
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	31,542							8,917		22,625
Equity-based compensation expense	29,524						15,487			14,037
Issuance of common stock (in shares)		34,000,000		484,000
Issuance of common stock	(1,418)			$ 1			(3,130)			1,711
Distributions to noncontrolling interest	(20,106)									(20,106)
Dividends declared	(9,414)							(9,414)
Foreign currency translation adjustment	0
Issuance of restricted stock awards (in shares)				80,000
Issuance of restricted stock awards	0
Exchanges of noncontrolling interest for Class A common stock (in shares)				33,986,000	(33,986,000)
Exchanges of noncontrolling interest for Class A common stock	$ 0			$ 34	$ (34)		101,450			(101,450)
Repurchase of common units and cancellation of Class B common stock (in shares)	(6,400,000)				(6,393,000)
Repurchase of common units and cancellation of Class B common stock	$ (91,046)				$ (7)		(28,334)			(62,705)
Conversion of Class C common stock to Class B common stock (in shares)					42,945,000	(42,945,000)
Conversion of Class C common stock to Class B common stock					$ 43	$ (43)
Recognition of tax receivable agreement liability resulting from exchanges of noncontrolling interest for Class A common stock	(109,541)						(109,541)
Net deferred tax assets resulting from exchanges of noncontrolling interest for Class A common stock	88,588						88,588
Balance (in shares) at Dec. 31, 2019				89,768,000	151,047,000	0
Balance at Dec. 31, 2019	627,645			$ 90	$ 151	$ 0	$ 204,711	2,420	79	420,194
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative adjustment due to adoption of new revenue recognition standard	$ 1,164							$ 224	$ 0	$ 940