Quarterly report pursuant to Section 13 or 15(d)

Cash, Cash Equivalents and Short-Term Investments - Schedule of Contractual Maturities of Short-term Investments (Details)

v3.10.0.1
Cash, Cash Equivalents and Short-Term Investments - Schedule of Contractual Maturities of Short-term Investments (Details) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]    
Due within one year $ 18,765,236  
Total $ 18,765,236 $ 21,287,064