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Incentive Award Plan - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
Incentive Award Plan - Narrative (Details) - USD ($)	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 1,000,000.0
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 3,500,000	$ 2,900,000	$ 7,500,000	$ 6,700,000
Select Employees and Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)	3,500,000		3,500,000
Board of Directors Chairman \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	$ 170,000		$ 170,000
Director \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	$ 122,500		$ 122,500