Commitments and Contingencies - Narrative (Details)
6 Months Ended
Jun. 30, 2020
USD ($)
tenant
claim
ground_lease
Dec. 31, 2019
USD ($)
Commitments And Contingencies Disclosure [Abstract]    
Contingently liable amount of debt owed by tenant $ 5,700,000 $ 5,700,000
Number of tenants indemnified by | tenant 1  
Accruals made for environmental remediation $ 0  
Outstanding claims | claim 0  
Total commitments $ 13,000,000.0  
Commitments to purchase capital assets within one year expected to be funded in remainder of year $ 11,800,000  
Operating lease renewal option two  
Operating lease renewal term 5 years  
Number of long-term non-cancelable ground leases | ground_lease 5  
Operating lease, weighted average remaining lease term 7 years 2 months 12 days  
Operating lease, right-of-use assets $ 5,000,000.0  
Operating lease liabilities $ 6,900,000