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Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Commitments and Contingencies    
Line of credit, performance and payment bonds $ 40.1 $ 40.5
Operating Partnership    
Commitments and Contingencies    
Outstanding letters of credit 4.1 4.1
Financial Guarantee | Point Street Apartments | Letter of Credit    
Commitments and Contingencies    
Credit facility, amount outstanding $ 2.1 $ 2.1