Equity-Based Compensation - Equity-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 3,612	$ (169)	$ 73,060	$ 665
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	38	(17)	86	245
SAR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	(316)	(417)	(111)	(4)
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	(299)	265	(38)	424
BMP equity units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	2,172	0	39,124	0
REUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 2,017	$ 0	$ 33,999	$ 0