Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Textual)

v3.3.0.814
Summary of Significant Accounting Policies (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Apr. 10, 2015
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Summary Of Significant Accounting Policies [Line Items]          
Research and Development Expense, Total   $ 4,758,590 $ 3,699,057 $ 13,008,190 $ 6,184,762
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   4,834,690 3,060,301 4,834,690 3,060,301
Employee Stock Purchase Plan [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Common Stock, Capital Shares Reserved for Future Issuance 600,000        
Common Stock Purchase Price Discount Percentage 15.00%