Credit Facilities - Additional Information (Details) - USD ($)	Jul. 21, 2020	Feb. 27, 2018	Jun. 30, 2020
2018 Credit Facility
Line of Credit Facility [Line Items]
Line of credit, available borrowings		$ 200,000,000.0
Outstanding borrowings			$ 0
Letter of Credit | 2018 Credit Facility
Line of Credit Facility [Line Items]
Line of credit, available borrowings		$ 50,000,000.0
Subsequent Event | 2020 Credit Facility
Line of Credit Facility [Line Items]
Line of credit, available borrowings	$ 300,000,000.0
Subsequent Event | Letter of Credit | 2020 Credit Facility
Line of Credit Facility [Line Items]
Line of credit, available borrowings	$ 50,000,000.0
Base Rate | 2018 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		0.50%
Base Rate | Subsequent Event | 2020 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
London Interbank Offered Rate (LIBOR) | 2018 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.00%
London Interbank Offered Rate (LIBOR) | Subsequent Event | 2020 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Minimum | Base Rate | 2018 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		0.25%
Minimum | Base Rate | Subsequent Event | 2020 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Minimum | London Interbank Offered Rate (LIBOR) | 2018 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.25%
Minimum | London Interbank Offered Rate (LIBOR) | Subsequent Event | 2020 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Maximum | Base Rate | 2018 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		0.75%
Maximum | Base Rate | Subsequent Event | 2020 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%
Maximum | London Interbank Offered Rate (LIBOR) | 2018 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.75%
Maximum | London Interbank Offered Rate (LIBOR) | Subsequent Event | 2020 Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%