Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v3.3.0.814
Subsequent Events (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2015
USD ($)
Sep. 30, 2015
USD ($)
unit
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
unit
Sep. 30, 2014
USD ($)
Oct. 21, 2015
USD ($)
unit
Jul. 01, 2015
USD ($)
Subsequent Event [Line Items]              
Gain on sale of real estate   $ 0 $ 0 $ 31,731 $ 570    
Munson Hill Towers [Member]              
Subsequent Event [Line Items]              
Number of Units in Real Estate Property | unit   279   279      
Disposal Group, Not Discontinued Operation, Sale Price             $ 57,100
Munson Hill Towers [Member] | Apartment Building [Member] | Subsequent Event              
Subsequent Event [Line Items]              
Number of Units in Real Estate Property | unit           279  
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] | Munson Hill Towers [Member] | Subsequent Event              
Subsequent Event [Line Items]              
Disposal Group, Not Discontinued Operation, Sale Price           $ 57,100  
Scenario, Forecast [Member] | Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] | Munson Hill Towers [Member]              
Subsequent Event [Line Items]              
Gain on sale of real estate $ 51,000