Quarterly report pursuant to Section 13 or 15(d)

Derivative Liability - Additional Information (Detail)

v3.7.0.1
Derivative Liability - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Feb. 28, 2017
Feb. 29, 2016
May 31, 2016
Derivative [Line Items]          
Change in fair value of derivative liability $ (26,666)   $ 1,196,800 $ 646,505 $ 646,505
Warrants and Non-cash Interest Expense          
Derivative [Line Items]          
Changes in the fair value of the liability     540,000    
AVCP Convertible Notes          
Derivative [Line Items]          
Change in fair value of derivative liability $ 0 $ 647,000 $ 0 $ 647,000