Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statement of Changes in Stockholders' (Deficit) Equity (Parenthetical)

v3.19.3
Consolidated Statement of Changes in Stockholders' (Deficit) Equity (Parenthetical) - $ / shares
 3 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Common Stock [Member]    
Proceeds from private equity offering, per share   $ 0.50
Proceeds from registered direct offering, per share $ 0.50 0.50
Additional Paid-in Capital [Member]    
Proceeds from private equity offering, per share   0.50
Proceeds from registered direct offering, per share $ 0.50 $ 0.50