Quarterly report pursuant to Section 13 or 15(d)

Allocation of Cash Proceeds Derivative Liability at Its Fair Value and Warrant at Its Relative Fair Value, with Residual Allocation of Host AVCP Note Agreement (Detail)

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Allocation of Cash Proceeds Derivative Liability at Its Fair Value and Warrant at Its Relative Fair Value, with Residual Allocation of Host AVCP Note Agreement (Detail) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Feb. 28, 2017
Feb. 28, 2017
Feb. 29, 2016
May 31, 2016
Debt Instrument [Line Items]        
Beginning Balance     $ 4,862,257 $ 4,862,257
Amortization Debt Discount     94,344 94,344
Change in Fair Value $ 26,666 $ (1,196,800) (646,505) (646,505)
Warrants (equity allocation)        
Debt Instrument [Line Items]        
Beginning Balance     215,732 215,732
Loss On Debt Extinguishment        
Debt Instrument [Line Items]        
Conversion       (584,177)
Compound Embedded Derivative        
Debt Instrument [Line Items]        
Beginning Balance     2,008,907 2,008,907
Change in Fair Value       (646,505)
Conversion       (1,362,402)
Common Stock Issued        
Debt Instrument [Line Items]        
Conversion       4,714,168
AVCP Convertible note payable        
Debt Instrument [Line Items]        
Beginning Balance     $ 2,637,618 2,637,618
Amortization Debt Discount       94,344
Conversion       (2,731,962)
Accrued Unpaid Interest        
Debt Instrument [Line Items]        
Conversion       $ (35,627)