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Leases - Summary of Residential and Non-Residential Accounts Receivable and Straight-Line Receivable Balances (Details) - Other Assets [Member] - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Residential Leases [Member]    
Operating Leased Assets [Line Items]    
Resident/tenant accounts receivable balances $ 43,415 $ 30,856
Allowance for doubtful accounts (39,014) (24,021)
Net receivable balances 4,401 6,835
Straight-line receivable balances 20,487 19,992
Non-Residential Leases [Member]    
Operating Leased Assets [Line Items]    
Resident/tenant accounts receivable balances 6,122 7,598
Allowance for doubtful accounts (5,232) (6,527)
Net receivable balances 890 1,071
Straight-line receivable balances $ 12,801 $ 13,413