Quarterly report pursuant to Section 13 or 15(d)

Note 19 - Fair Value of Financial Instruments (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

v3.19.3
Note 19 - Fair Value of Financial Instruments (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis - USD ($)
Aug. 31, 2019
May 31, 2019
Note 19 - Fair Value of Financial Instruments (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Derivative liabilities $ 0 $ 0
Fair Value, Inputs, Level 1 [Member]    
Note 19 - Fair Value of Financial Instruments (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value, Inputs, Level 2 [Member]    
Note 19 - Fair Value of Financial Instruments (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value, Inputs, Level 3 [Member]    
Note 19 - Fair Value of Financial Instruments (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Derivative liabilities $ 0 $ 0