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Real Estate Real Estate (Details) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Real Estate [Abstract]    
Properties in operation $ 239,476,000 $ 226,055,000
Properties under development 747,334,000 710,312,000
Total 986,810,000 936,367,000
Real Estate Investment Property, Accumulated Depreciation $ 10,896,000 $ 9,073,000