Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Textual)

v3.7.0.1
Summary of Significant Accounting Policies (Details Textual) - USD ($)
1 Months Ended 3 Months Ended
May 21, 2015
Mar. 31, 2017
Mar. 31, 2016
Apr. 10, 2015
Summary Of Significant Accounting Policies [Line Items]        
Research and Development Expense, Total   $ 8,353,184 $ 7,674,093  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   7,359,173 4,879,841  
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%