Leases - Narrative (Details)	Jun. 30, 2020 ground_lease office_lease
Lessee, Lease, Description [Line Items]
Number of ground leases | ground_lease	8
Number of office leases | office_lease	1
Weighted-average remaining term of operating leases	42 years 10 months 24 days
Weighted-average discount rate of operating leases (as a percent)	8.10%
Minimum
Lessee, Lease, Description [Line Items]
Operating lease renewal term	5 years
Maximum
Lessee, Lease, Description [Line Items]
Operating lease renewal term	10 years