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Net Loss Per Share - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Earnings Per Share [Abstract]        
Stock options, Series B Convertible Preferred Stock, warrants and stock awards excluding calculation of diluted net loss per share     2,990,000 7,500,000
Dilutive securities, effect on basic earnings per share $ 0 $ 0