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Derivative Liability - Assumptions Used to Value Derivative Liabilities Upon Issuance of Warrants at End of Each Reporting Period (Detail) - Warrant Derivative Liability [Member]
12 Months Ended
Mar. 31, 2016
$ / shares
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Closing price per share of common stock $ 2.17
Exercise price per share $ 1.00
Expected volatility 73.35%
Risk-free interest rate 0.59%
Dividend yield 0.00%
Remaining expected term of underlying securities (years) 11 months 16 days