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Note 7 - Stock-based Compensation and Equity Transactions (Details Textual)
3 Months Ended
Jan. 07, 2026
shares
Dec. 01, 2025
shares
Jan. 13, 2025
shares
Dec. 02, 2024
shares
Jan. 31, 2026
USD ($)
shares
Jan. 31, 2025
USD ($)
shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term         7 years 1 month 13 days  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term         5 years 8 months 15 days  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term         7 years 1 month 13 days  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value | $         $ 5,733,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value | $         3,039,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value | $         5,733,000  
Share-Based Payment Arrangement, Expense | $         264,000 $ 195,000
Selling, General and Administrative Expenses [Member]            
Share-Based Payment Arrangement, Expense | $         $ 264,000 $ 195,000
Incentive Stock Options [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares 165,000       0 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   4 years        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares   55,500        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $         $ 1,282,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition         1 year 8 months 12 days  
Incentive Stock Options [Member] | Share-Based Payment Arrangement, Employee [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares         0 0
Incentive Stock Options [Member] | Share-Based Payment Arrangement, Tranche Two [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting, Number of Installments   3        
Incentive Stock Options [Member] | Vesting on December 1, 2026 [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage   25.00%        
Restricted Stock [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares 82,500          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $         $ 1,190,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition         1 year 6 months  
Restricted Stock and Incentive Stock Options [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 4 years          
Restricted Stock and Incentive Stock Options [Member] | Share-Based Payment Arrangement, Tranche Two [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 3 years          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting, Number of Installments 12          
Restricted Stock and Incentive Stock Options [Member] | Vesting on January 7, 2027 [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage 25.00%          
Seven Managers [Member] | Incentive Stock Options [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares       47,500    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)       4 years    
Seven Managers [Member] | Incentive Stock Options [Member] | Vesting on December 2, 2025 [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage       0.25%    
Seven Managers [Member] | Incentive Stock Options [Member] | Share-Based Payment Arrangement, Tranche Two [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)       3 years    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting, Number of Installments       3    
Two Managers and Three Officers [Member] | Incentive Stock Options [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares     165,000      
Two Managers and Three Officers [Member] | Restricted Stock [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares     82,500      
Two Managers and Three Officers [Member] | Restricted Stock and Incentive Stock Options [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     4 years      
Two Managers and Three Officers [Member] | Restricted Stock and Incentive Stock Options [Member] | Share-Based Payment Arrangement, Tranche Two [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     3 years      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting, Number of Installments     12      
Two Managers and Three Officers [Member] | Restricted Stock and Incentive Stock Options [Member] | Vesting on January 13, 2026 [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage     0.25%