Quarterly report pursuant to Section 13 or 15(d)

Note 18 - Related Party Transactions (Details Textual)

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Note 18 - Related Party Transactions (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
May 31, 2022
May 31, 2021
May 31, 2022
May 31, 2021
Nov. 30, 2018
Nov. 30, 2021
Share-Based Payment Arrangement, Expense $ 800 $ 800 $ 1,600 $ 1,600    
Chief Executive Officer [Member]            
Related Party Transaction, Amounts of Transaction 10 $ 5 20 10    
Restricted Stock Units (RSUs) [Member]            
Share-Based Payment Arrangement, Expense     $ 1,300 1,600    
Restricted Stock Units (RSUs) [Member] | Chief Technology Officer [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)     200,000      
Andre Buys [Member]            
Related Party Transaction, Amounts of Transaction     $ 0 100    
Due to Related Parties, Total $ 0   0     $ 100
Share-Based Payment Arrangement, Expense     $ 0 $ 4    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)         150,000