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Intangible Assets (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Intangible Assets (Textual)    
Amortization expense relating to intangible assets $ 165,394 $ 262,908
Minimum [Member]    
Intangible Assets (Textual)    
Estimated useful life 5 years  
Maximum [Member]    
Intangible Assets (Textual)    
Estimated useful life 13 years