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Leases - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
tenant
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Lessee, Lease, Description [Line Items]      
Straight line rent adjustments $ 15,368 $ 16,079 $ 27,507
Straight line rent receivables 82,978 68,824  
Variable lease, income 85,107 75,851 91,076
Tenant reimbursement income 81,295 71,385 86,353
Right-of-use asset   168  
Operating lease, liability   174  
Lease expense 79 $ 1,749 $ 1,670
Operating Lease, Liability, Statement of Financial Position [Extensible List]   Accounts payable and other liabilities  
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]   Other assets, net  
COVID-19 Pandemic      
Lessee, Lease, Description [Line Items]      
Temporary rental assistance $ 2,483    
Number of tenants granted rent assistance | tenant 18    
Deferred payment plan period 12 months    
Lessor, Operating Lease, Payment to be Received      
Lessee, Lease, Description [Line Items]      
Number of government tenants with the right to terminate their leases | tenant 14    
Tenant with Exercisable Termination Rights | Lessor, Operating Lease, Payment to be Received | Tenant Concentration      
Lessee, Lease, Description [Line Items]      
Concentration risk, percentage 2.80%    
2022 1.50%    
2023 8.80%    
2024 3.00%    
2025 6.20%    
2026 2.40%    
2027 1.70%    
2028 2.50%    
2029 1.70%    
2030 1.60%    
2035 1.70%    
2040 1.10%    
Fourteen Government Tenants | Lessor, Operating Lease, Payment to be Received | Tenant Concentration      
Lessee, Lease, Description [Line Items]      
Concentration risk, percentage 6.20%