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Summary of Significant Accounting Policies (Details) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Dec. 31, 2016
Summary of Significant Accounting Policies [Abstract]        
Cash and cash equivalents - balance sheet $ 1,013,180 $ 400,223 $ 141,679  
Cash included in assets held for sale - balance sheet 544,177   1,136,683  
Cash and cash equivalents - statements of cash flow $ 1,557,357 $ 997,216 $ 1,278,362 $ 823,272