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Segment Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Total revenue $ 32,164,116 $ 37,674,524
Operating Segments [Member] | United States [Member]    
Total revenue 19,420,815 19,757,986
Operating Segments [Member] | International [Member]    
Total revenue $ 12,743,301 $ 17,916,538