Quarterly report pursuant to Section 13 or 15(d)

GOING CONCERN - Additional Information (Detail)

v3.8.0.1
GOING CONCERN - Additional Information (Detail) - USD ($)
3 Months Ended 12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
May 31, 2017
May 31, 2016
Cash Flow Supplemental Disclosures [Line Items]        
Deficit accumulated during the development stage $ 100,351,226      
Net loss 1,164,977 $ 1,268,418 $ 4,563,721 $ 9,415,450
Net Cash Provided by (Used in) Operating Activities, Continuing Operations, Total (880,125) (1,147,743) 3,936,796 4,279,100
Cash and cash equivalents 477,258 $ 391,436 $ 487,383 $ 444,179
Net working capital deficit $ (89,384)