Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies and Basis of Presentation - Revenue Recognition and Rents and Other Receivables (Details)

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Summary of Significant Accounting Policies and Basis of Presentation - Revenue Recognition and Rents and Other Receivables (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Property Subject to or Available for Operating Lease [Line Items]      
Cumulative effect adjustment upon adoption of new accounting standard   $ 906  
Allowance for doubtful accounts     $ 2,400
Multifamily Properties      
Property Subject to or Available for Operating Lease [Line Items]      
Lessor, operating lease term of contract (in years) 1 year    
Commercial Properties      
Property Subject to or Available for Operating Lease [Line Items]      
Lessor, operating lease term of contract (in years) 7 years    
ASU 2016-02      
Property Subject to or Available for Operating Lease [Line Items]      
Cumulative effect adjustment upon adoption of new accounting standard   $ 900