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Net Loss per Common Share - Additional Information (Detail) - shares
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Net Income Loss Per Common Share [Line Items]    
Companies common stock share outstanding 9,000,000  
Antidilutive securities 30,416,127 47,820,744
Shares loaned under the share lending arrangement 9,000,000 9,000,000