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Summary of Activity of Level 3 Inputs Measured on Recurring Basis (Detail) (USD $)
 6 Months Ended 3 Months Ended 6 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Fair Value, Inputs, Level 3
Sep. 30, 2014
Fair Value, Inputs, Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance     $ 2,521,451 $ 2,354,624
Warrant liability incurred (Note 7) 487,620 13,316 487,620 487,620
Change in warrant liability     (121,769) (91,764)
Holdback consideration     0 136,822
Conversion feature liability incurred (Note 7) 578,155 125,000 578,155 578,155
Change in conversion feature liability     (30,371) (30,371)
Ending Balance     $ 3,435,086 $ 3,435,086