Consolidated Statements of Shareholder's Equity and Partners' Capital - USD ($) $ in Thousands	Total	Class A common stock [Member]	Class C common stock [Member]	Additional Paid-in Capital	Partners Capital	Noncontrolling Interest	Retained Earnings
Balance at Dec. 31, 2017	$ 289,157				$ 288,528	$ 629
Distributions to partners	(143,788)				(143,750)	(38)
Net income prior to Transactions	81,074				80,959	115
Recapitalization in connection with the Transactions	(10,805)	$ 5	$ 4	$ 115,167	$ (225,737)	99,756
Recapitalization in connection with the Transactions, shares		45,855,000	40,000,000
Net income post Transactions	47,833					10,867	$ 36,966
Distributions to non-controlling interests	(4,101)					(4,101)
Dividends to shareholders	(4,356)						(4,356)
Net income	128,907
Balance at Dec. 31, 2018	255,014	$ 5	$ 4	115,167		107,228	32,610
Balance, shares at Dec. 31, 2018		45,855,000	40,000,000
Vested restricted stock grants, shares		109,000
Stock-based compensation	2,548			2,548
Dividend equivalent rights paid	(154)			(154)
Distributions to non-controlling interests	(27,703)					(27,703)
Dividends to shareholders	(30,293)						(30,293)
Net income	36,983					16,564	20,419
Balance at Dec. 31, 2019	236,395	$ 5	$ 4	117,561		96,089	22,736
Balance, shares at Dec. 31, 2019		45,963,716	40,000,000
Vested restricted stock grants, shares		143,466
Stock-based compensation	3,592			3,592
Dividend equivalent rights paid	(100)			(100)
Distributions to non-controlling interests	(10,200)					(10,200)
Dividends to shareholders	(11,734)						(11,734)
Net income	10,448					2,748	7,700
Balance at Dec. 31, 2020	$ 228,401	$ 5	$ 4	$ 121,053		$ 88,637	$ 18,702
Balance, shares at Dec. 31, 2020		46,107,183	40,000,000