Quarterly report pursuant to Section 13 or 15(d)

Summary of Fair Value of Convertible Note Redemption Provision Derivative Liability (Detail)

v3.19.3
Summary of Fair Value of Convertible Note Redemption Provision Derivative Liability (Detail) - USD ($)
3 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Net Proceeds $ 0 $ 5,000,000
Convertible Note Redemption Provision Derivative Liability [Member]    
Derivative Liability 1,442,764  
Convertible Note Redemption Provision Derivative Liability [Member] | Inception date June 2018 Note, November 15, 2018 [Member]    
Net Proceeds 5,000,000  
Inception Date 1,284,988  
Derivative Liability 372,458  
Convertible Note Redemption Provision Derivative Liability [Member] | Inception date January 2019 Note, January 30, 2019 [Member]    
Net Proceeds 5,000,000  
Inception Date 1,465,008  
Derivative Liability $ 1,070,306