Condensed Consolidated Statement Of Changes In Stockholders' Equity (Unaudited) (Successor) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock Common Class A	Common Stock Common Class B	Common Stock Common Class C	Paid-In Capital	Accumulated Deficit	Total Stockholders' Equity	Noncontrolling Interests
Balance (in shares) at Feb. 08, 2018		3,862	25,875
Balance at Feb. 08, 2018	$ (5,005)		$ 3		$ 3,106	$ (8,114)	$ (5,005)
Equity-based compensation expense	3,466				3,466		3,466
Net loss	(33,754)					(13,330)	(13,330)	$ (20,424)
Balance (in shares) at Mar. 31, 2018		169,372		213,402
Balance at Mar. 31, 2018	3,419,693	$ 17		$ 21	1,402,888	(21,444)	1,381,482	2,038,211
Balance (in shares) at Feb. 08, 2018		3,862	25,875
Balance at Feb. 08, 2018	(5,005)		$ 3		3,106	(8,114)	(5,005)
Class A common shares released from possible redemption	966,384
Balance (in shares) at Jun. 30, 2018		179,059		204,922
Balance at Jun. 30, 2018	3,409,611	$ 18		$ 20	1,498,023	(28,044)	1,470,017	1,939,594
Balance (in shares) at Mar. 31, 2018		169,372		213,402
Balance at Mar. 31, 2018	3,419,693	$ 17		$ 21	1,402,888	(21,444)	1,381,482	2,038,211
Class C common shares issued in connection with the closing of the Business Combination (in shares)				1,109
Noncontrolling interest in SRII Opco issued in the Business Combination	8,758							8,758
Class A common shares redeemed (in shares)		9,589		9,589
Class A common shares redeemed	(437)	$ 1		$ (1)	90,872		90,872	(91,309)
Restricted stock awards vested, net of taxes (in shares)		98
Equity-based compensation expense	4,263				4,263		4,263
Net loss	(22,666)					(6,600)	(6,600)	(16,066)
Balance (in shares) at Jun. 30, 2018		179,059		204,922
Balance at Jun. 30, 2018	3,409,611	$ 18		$ 20	1,498,023	(28,044)	1,470,017	1,939,594
Balance (in shares) at Dec. 31, 2018		180,072		202,170
Balance at Dec. 31, 2018	216,127	$ 18		$ 20	1,503,382	(1,532,813)	(29,393)	245,520
Restricted stock awards vested, net of taxes (in shares)		338
Restricted stock awards vested, net of taxes	(142)				67		67	(209)
Equity-based compensation expense	2,679				2,679		2,679
Net loss	(17,435)					(8,407)	(8,407)	(9,028)
Balance (in shares) at Mar. 31, 2019		180,410		202,170
Balance at Mar. 31, 2019	201,229	$ 18		$ 20	1,506,128	(1,541,220)	(35,054)	236,283
Balance (in shares) at Dec. 31, 2018		180,072		202,170
Balance at Dec. 31, 2018	216,127	$ 18		$ 20	1,503,382	(1,532,813)	(29,393)	245,520
Class A common shares released from possible redemption	0
Balance (in shares) at Jun. 30, 2019		182,636		199,988
Balance at Jun. 30, 2019	213,645	$ 18		$ 20	1,509,716	(1,538,975)	(29,221)	242,866
Balance (in shares) at Mar. 31, 2019		180,410		202,170
Balance at Mar. 31, 2019	201,229	$ 18		$ 20	1,506,128	(1,541,220)	(35,054)	236,283
Conversion of common shares from Class B to Class A at closing of Business Combination (in shares)		2,182		2,182
Conversion of common shares from Class B to Class A at closing of Business Combination					2,756		2,756	(2,756)
Restricted stock awards vested, net of taxes (in shares)		44
Restricted stock awards vested, net of taxes	(23)				(8)		(8)	(15)
Equity-based compensation expense	840				840		840
Net loss	11,599					2,245	2,245	9,354
Balance (in shares) at Jun. 30, 2019		182,636		199,988
Balance at Jun. 30, 2019	$ 213,645	$ 18		$ 20	$ 1,509,716	$ (1,538,975)	$ (29,221)	$ 242,866