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Related Party Loan Payable (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended
Jun. 15, 2020
Jul. 31, 2020
Jul. 31, 2019
Apr. 30, 2020
Jul. 10, 2019
Oct. 10, 2018
Debt Instrument [Line Items]            
Related party loan payable - current   $ 2,000,000   $ 4,000,000    
Interest payable   140,084        
Interest Expense, Debt   60,625 $ 60,493      
Related party loan payable - non-current   209,035        
Unused portion of loan principal   3,000,000        
Principle balance of loan repaid   $ 2,000,000        
Wesley Clover International Corporation And Kmb Trac Two Holdings Ltd [Member]            
Debt Instrument [Line Items]            
Unused portion of loan principal $ 3,000,000          
Principle balance of loan repaid $ 2,000,000          
Debt instrument, interest rate         8.00% 8.00%
Wesley Clover International Corporation And Kmb Trac Two Holdings Ltd [Member] | Maximum [Member]            
Debt Instrument [Line Items]            
Related party loan payable - non-current         $ 5,000,000 $ 3,000,000