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Intangible Assets - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]        
Amortization $ 74,402 $ 93,338 $ 396,206 $ 276,004