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Summary of Activity of Level 3 Inputs Measured on Recurring Basis (Detail) - USD ($)
 3 Months Ended 9 Months Ended
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Fair value of warrant - NMM   $ 2,922,222 $ 0
Fair Value, Inputs, Level 3      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Balance, beginning of period $ 1,703,996 2,586,854  
Fair value of warrant - NMM 2,922,222 2,922,222  
Loss (gain) on change in fair value of warrant and conversion feature liability (430,396) (313,530)  
Conversion of warrants and convertible note - NNA (2,106,933) (2,106,933)  
Warrant out of period correction, as adjusted 0 (999,724)  
Balance, as adjusted, end of period 2,088,889 2,088,889  
Fair Value, Inputs, Level 3 | Warrant Liability      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Balance, beginning of period 1,315,846 2,144,496  
Fair value of warrant - NMM 2,922,222 2,922,222  
Loss (gain) on change in fair value of warrant and conversion feature liability (525,150) (354,076)  
Conversion of warrants and convertible note - NNA (1,624,029) (1,624,029)  
Warrant out of period correction, as adjusted 0 (999,724)  
Balance, as adjusted, end of period 2,088,889 2,088,889  
Fair Value, Inputs, Level 3 | Conversion Feature Liability      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Balance, beginning of period 388,150 442,358  
Fair value of warrant - NMM 0 0  
Loss (gain) on change in fair value of warrant and conversion feature liability 94,754 40,546  
Conversion of warrants and convertible note - NNA (482,904) (482,904)  
Warrant out of period correction, as adjusted 0 0  
Balance, as adjusted, end of period $ 0 $ 0