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Restricted Cash (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Restricted Cash (Textual)    
Restricted cash $ 3,634,144 $ 6,121,637
Description of restricted cash notes payable maturity The restriction will be lifted upon the maturity of the notes payable on January 10, 2019. The restriction was lifted upon the maturity of the notes payable on January 5, 2018.