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Commitments and Contingencies (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Commitments and Contingencies (Textual)      
Lease expiration period The two leases are expiring through 2020.    
Rent expense $ 331,904 $ 183,998 $ 171,572