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Significant Accounting Policies - Computation of Basic and Diluted Earnings Per Share - 10Q (Detail) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Summary of Significant Accounting Policies    
Net loss $ (7,931,313) $ (7,554,978)
Earnings Per Share, Basic and Diluted $ (0.34) $ (0.40)
Basic and diluted weighted average common shares outstanding 23,480,432 19,071,838