XML 106 R84.htm IDEA: XBRL DOCUMENT v3.20.4
INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - evo at Cira Centre South Venture (Details)
$ in Thousands
12 Months Ended
Jan. 10, 2018
USD ($)
housing_unit
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 21, 2020
Schedule of Equity Method Investments [Line Items]          
Sale of ownership interest percentage         60.00%
Proceeds from real estate venture sales   $ 0 $ 9,730 $ 60,346  
Net gain on real estate venture transactions   $ 75 $ 11,639 $ 142,233  
Evo At Cira Disposition          
Schedule of Equity Method Investments [Line Items]          
Sale of ownership interest percentage 50.00%        
Number of property units sold | housing_unit 345        
Sales price $ 197,500        
Development costs contemplated debt financing 110,900        
Proceeds from real estate venture sales 43,000        
Cost of equity method investment 17,300        
Net gain on real estate venture transactions $ 25,700