Quarterly report pursuant to Section 13 or 15(d)

Multifamily Developmental Activity (Narrative) (Details)

v3.21.1
Multifamily Developmental Activity (Narrative) (Details)
$ in Thousands
 1 Months Ended 3 Months Ended
Aug. 31, 2020
USD ($)
Mar. 31, 2021
USD ($)
property
Dec. 31, 2020
USD ($)
Real Estate Facilities [Line Items]      
Land cost basis   $ 3,061,862 $ 3,050,713
Brentford at The Mile [Member]      
Real Estate Facilities [Line Items]      
Number of Units in Multi-Family Asset | property   411  
Value of property contributed $ 18,500    
Land cost basis   $ 5,500  
Development cost incurred, inclusive of land cost   $ 20,000  
Brentford at The Mile [Member] | Investment in Joint Venture [Member]      
Real Estate Facilities [Line Items]      
Economic interest in joint venture, percentage   98.20%  
Brentford at The Mile [Member] | JV Partner [Member]      
Real Estate Facilities [Line Items]      
Economic interest in joint venture, percentage   1.80%  
Minimum [Member] | Brentford at The Mile [Member]      
Real Estate Facilities [Line Items]      
Period to complete construction 24 months    
Maximum [Member] | Brentford at The Mile [Member]      
Real Estate Facilities [Line Items]      
Period to complete construction 36 months