Share-Based Compensation - Schedule of Compensation Expense and Future Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 6,495	$ 25,895
Capitalized share-based compensation cost		(1,010)	$ 0
2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		6,081
2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		9,586
2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		9,259
2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		969
Restricted incentive units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	2,167	2,694
Compensation expense, cumulative effect adjustment at IPO	2,000
Restricted incentive units | 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		420
Restricted incentive units | 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		828
Restricted incentive units | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		828
Restricted incentive units | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		618
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	3,456	3,178
Compensation expense, cumulative effect adjustment at IPO	3,200
Restricted Stock Awards | 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		569
Restricted Stock Awards | 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		1,129
Restricted Stock Awards | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		1,129
Restricted Stock Awards | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		351
Time-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	1,246	11,480
Time-Based Restricted Stock Units | 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		3,372
Time-Based Restricted Stock Units | 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		4,217
Time-Based Restricted Stock Units | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		3,891
Time-Based Restricted Stock Units | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		0
Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 636	8,543
Performance-Based Restricted Stock Units | 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		1,720
Performance-Based Restricted Stock Units | 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		3,412
Performance-Based Restricted Stock Units | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		3,411
Performance-Based Restricted Stock Units | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		$ 0