Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Principles (Details Textual 4)

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Summary of Significant Accounting Principles (Details Textual 4) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cumulative deferred tax assets $ 27,700,000   $ 27,700,000  
Research and development $ 5,084,419 $ 1,024,470 $ 14,139,074 $ 4,224,208
Expected volatility rate of stock     50.00%