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Mortgages Payable and Other Secured Financing Narrative Tagging (Details)
1 Months Ended 12 Months Ended
Nov. 30, 2015
Dec. 31, 2016
Eagle Village [Member]    
Long-term Debt, Refinanced, Maturity Date Sep. 01, 2018  
Residences at DeCordova [Member]    
Long-term Debt, Refinanced, Maturity Date   Jun. 01, 2017
Residences at Weatherford [Member]    
Long-term Debt, Refinanced, Maturity Date   Jun. 01, 2017