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Interest Expense on Convertible Notes (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Mar. 31, 2017
Mar. 31, 2016
Schedule Of Debt Instrument Interest Expense [Line Items]        
Interest expense $ 192,989 $ 2,659 $ 82,905 $ 542,296
Interest expense, debt     82,905 182,642
Convertible Notes Payable        
Schedule Of Debt Instrument Interest Expense [Line Items]        
Interest expense     0 171,027
Amortization of loan fees and discount     0 188,627
Interest expense, debt     $ 0 $ 359,654