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Intangible Assets, Net (Details Textual) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Intangible Assets, Net (Textual)        
Amortization expense $ 421,188 $ 421,188 $ 1,684,750 $ 834,505
Estimated aggregate amortization expense for 2018 1,178,531   1,599,718  
Estimated aggregate amortization expense for 2019 1,087,333   1,087,333  
Estimated aggregate amortization expense for 2020 592,681   592,681  
Estimated aggregate amortization expense for 2021 444,167   444,167  
Estimated aggregate amortization expense, thereafter $ 196,543   196,543  
Aggregate of intangible assets acquired     $ 3,952,000