Debt - Secured Debt (Details) - USD ($)	Apr. 03, 2020	Sep. 30, 2020
Secured Term Loan Facility
Debt Instrument [Line Items]
Aggregate maximum borrowing capacity	$ 150,000,000
Uncommitted Secured Letter of Credit Facility
Debt Instrument [Line Items]
Aggregate maximum borrowing capacity	$ 200,000,000	$ 199,000,000
LIBOR | Minimum | Secured Term Loan Facility
Debt Instrument [Line Items]
Variable rate on credit facilities	3.00%
LIBOR | Maximum | Secured Term Loan Facility
Debt Instrument [Line Items]
Variable rate on credit facilities	4.50%
Base Rate | Minimum | Secured Term Loan Facility
Debt Instrument [Line Items]
Variable rate on credit facilities	2.00%
Base Rate | Maximum | Secured Term Loan Facility
Debt Instrument [Line Items]
Variable rate on credit facilities	3.50%