Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Computation of Basic and Diluted Earnings Per Share (Detail)

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Significant Accounting Policies - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Basic and diluted net loss per share of common stock:        
Net loss $ (2,562,541) $ (504,608) $ (4,098,259) $ (620,587)
Net loss applicable to common stockholders $ (2,562,541) $ (504,608) $ (4,098,259) $ (620,587)
Weighted average shares of common stock outstanding 26,901,100 22,071,172 26,434,174 14,532,561
Net loss per share of common stock-basic and diluted $ (0.10) $ (0.02) $ (0.16) $ (0.04)