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Note 8 - Margin Loan Payable (Details Textual)
$ in Thousands, $ in Thousands
12 Months Ended
Jul. 27, 2022
CAD ($)
shares
Jul. 27, 2022
USD ($)
shares
Oct. 28, 2021
CAD ($)
shares
Oct. 28, 2021
USD ($)
Nov. 30, 2022
CAD ($)
Nov. 30, 2022
USD ($)
Nov. 30, 2021
CAD ($)
Nov. 30, 2021
USD ($)
Nov. 30, 2022
USD ($)
Oct. 27, 2022
CAD ($)
shares
Oct. 27, 2022
USD ($)
shares
Oct. 28, 2021
USD ($)
shares
Statement Line Items [Line Items]                        
Proceeds from borrowings | $         $ 0   $ 11,966          
Gain on modification of margin loan | $         834   0          
Margin loan facility [member]                        
Statement Line Items [Line Items]                        
Borrowings, maximum borrowing limit     $ 24,700             $ 13,400 $ 10,000 $ 20,000
Borrowings, standby fee, percent     3.00%             3.00% 3.00% 3.00%
Borrowings, securities pledged as collateral, shares (in shares) | shares 20,700,000 20,700,000 20,000,000             20,700,000 20,700,000 20,000,000
Borrowings, facility fee, percent     1.50%             1.50% 1.50% 1.50%
Proceeds from borrowings     $ 12,400 $ 10,000     12,388 $ 10,000        
Repayments of borrowings $ 3,700 $ 2,900     3,696 $ 2,882 $ (0)          
Borrowings, securities pledged as collateral, additional shares (in shares) | shares 700,000 700,000                    
Borrowings, minimum outstanding advance provided                   $ 9,400 $ 7,000  
Borrowings, advance outstanding         9,500       $ 7,100      
Gain on modification of margin loan         $ 834 $ 615            
Margin loan facility [member] | London Inter-Bank Offered Rate (LIBOR) [member]                        
Statement Line Items [Line Items]                        
Borrowings, adjustment to interest rate basis     5.65%                 5.65%
Margin loan facility [member] | Secured overnight finance rate [member]                        
Statement Line Items [Line Items]                        
Borrowings, adjustment to interest rate basis                   5.65% 5.65%