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Investment in Real Estate - Cost Capitalized (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Real Estate [Abstract]        
Capitalized personnel costs $ 2,351 $ 2,227 $ 6,989 $ 5,063
Capitalized interests $ 2,960 $ 1,279 $ 8,414 $ 4,561