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Real Estate Acquisitions (Details) - Operations - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Business Acquisition [Line Items]    
Acquisition expenses $ 20 $ 1,735
Series of individually immaterial business acquisitions    
Business Acquisition [Line Items]    
Revenues   752
Acquisition expenses   1,458
Net loss   $ 1,498