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Fair Value Measurements - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2015
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Risk Free Interest Rate 0.13%  
Expected Dividend yield 0.00%  
Expected price Volatility 107.00%  
Expected Term (in years) 9 months 18 days  
Level 3 [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Liabilities measured at fair value   $ 0