Annual report pursuant to Section 13 and 15(d)

Fair Value of Assets and Liabilities - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)

v3.3.1.900
Fair Value of Assets and Liabilities - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)
12 Months Ended
Dec. 31, 2014
USD ($)
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]  
Change in fair value of the derivative warrant liability $ 28,448
Reclassification of derivative warrant liability to equity (48,380)
Derivative warrant liability, Ending balance 0
Fair Value, Measurements, Recurring [Member]  
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]  
Derivative warrant liability, Beginning balance 19,932
Change in fair value of the derivative warrant liability 28,448
Reclassification of derivative warrant liability to equity (48,380)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]  
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]  
Derivative warrant liability, Beginning balance 19,932
Change in fair value of the derivative warrant liability 28,448
Reclassification of derivative warrant liability to equity $ (48,380)