Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Total Stockholders’ Equity	Additional Paid in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive (Loss) Income	Non-controlling Interest	Shares of Class A Common Stock	Shares of Class A Common Stock Common Stock	Shares of Class B Common Stock	Shares of Class B Common Stock Common Stock
Beginning balance at Dec. 31, 2019	$ 781,492	$ 554,827	$ 410,596	$ 143,105		$ 226,665		$ 819		$ 307
Beginning balance (in shares) at Dec. 31, 2019								81,885,000		30,639,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other distributions and advance payments to non-controlling interest unitholders	(804)					(804)
$0.05/share of Class A Common Stock dividend	(4,244)	(4,244)		(4,244)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(1,532)					(1,532)
Stock based compensation expense	4,124	3,001	3,001			1,123
Vesting of restricted stock units (shares)								35,000
Vesting of restricted stock units	0	67	67			(67)		$ 0
Net (loss) income	2,417	1,720		1,720		697
Ending balance (in shares) at Mar. 31, 2020								81,920,000		30,639,000
Ending balance at Mar. 31, 2020	781,453	555,371	413,664	140,581	$ 0	226,082		$ 819		$ 307
Beginning balance at Dec. 31, 2020	1,310,043	1,150,637	1,125,554	23,288	0	159,406		$ 1,579		$ 216
Beginning balance (in shares) at Dec. 31, 2020							157,952,213	157,952,000	21,550,282	21,550,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchanges of Class B Common Stock for Class A Common Stock (shares)								11,269,000		(11,269,000)
Exchange of Class B Common Stock for Class A Common Stock	0	82,753	82,753			(82,753)		$ 113		$ (113)
Offering Costs	(848)	(773)	(773)			(75)
Effect of exchange on deferred tax asset, net of liability under tax receivable agreements	4,954	4,954	4,954
Deferred tax impact of ownership changes from issuance of Class A Common Stock	(4,519)	(4,519)	(4,519)
Other distributions and advance payments to non-controlling interest unitholders	548					548
Stock based compensation expense	4,947	4,515	4,515			432
Vesting of restricted stock units (shares)								38,000
Vesting of restricted stock units	(186)	(130)	(130)			(56)		$ 0
Restricted Stock and RSU forfeitures	2	2		2
Currency translation adjustment	1,410	1,318			1,318	92
Net (loss) income	(38,616)	(34,205)		(34,205)		(4,411)
Ending balance (in shares) at Mar. 31, 2021							169,260,130	169,259,000	10,280,825	10,281,000
Ending balance at Mar. 31, 2021	$ 1,277,735	$ 1,204,552	$ 1,212,354	$ (10,915)	$ 1,318	$ 73,183		$ 1,692		$ 103