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Property and Equipment, Net (Details Textual) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Property and Equipment, Net (Textual)            
Depreciation expense $ 86,076 $ 101,801 $ 292,214 $ 355,348 $ 447,746 $ 568,028