Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Textual)

v2.4.1.9
Summary of Significant Accounting Policies (Details Textual) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Summary Of Significant Accounting Policies [Line Items]    
Research and Development Expense, Total $ 4,145,764us-gaap_ResearchAndDevelopmentExpense $ 929,213us-gaap_ResearchAndDevelopmentExpense
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 3,511,890us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 4,133,540us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount