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Derivative Financial Instruments - Components of Derivative Liabilities (Detail) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Derivative [Line Items]    
Derivative liabilities $ 64,941 $ 3,402,416
Derivative liabilities $ 64,941 $ 3,402,416
Common shares linked to derivative liabilities 130,208 3,304,812
Compound Embedded Derivative [Member]    
Derivative [Line Items]    
Common shares linked to derivative liabilities   3,174,604
Warrant Derivatives [Member]    
Derivative [Line Items]    
Derivative liabilities $ 64,941 $ 6,225
Derivative liabilities $ 64,941 $ 6,225
Common shares linked to derivative liabilities 130,208 130,208
Senior Convertible Notes [Member] | Warrant Derivatives [Member]    
Derivative [Line Items]    
Derivative liabilities $ 64,941 $ 6,225
Derivative liabilities $ 64,941 $ 6,225
Common shares linked to derivative liabilities 130,208 130,208
2014 Convertible Promissory Notes [Member] | Compound Embedded Derivative [Member]    
Derivative [Line Items]    
Derivative liabilities   $ 3,396,191
Derivative liabilities   $ 3,396,191
Common shares linked to derivative liabilities   3,174,604