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Note 11 - Stock-based Compensation (Details Textual) - USD ($)
12 Months Ended
Aug. 31, 2025
Aug. 31, 2024
Aug. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number 1,923,138 1,752,665 1,557,132
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross 245,190 269,844  
Share-Based Payment Arrangement, Expense $ 1,211,434 $ 1,381,169  
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount 1,010,384    
Allocated Share-based Compensation Expense, Estimate Next Twelve Months 672,054    
Allocated Share-based Compensation Expense, Estimate, Fiscal Year Two $ 338,330    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 5.07 $ 5.04  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year) 5 years 8 months 26 days 6 years 10 days  
Share-Based Payment Arrangement, Option [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Terms of Award 10    
Share-Based Payment Arrangement, Option [Member] | Minimum [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 1 year    
Share-Based Payment Arrangement, Option [Member] | Maximum [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 3 years    
Restricted Stock Units (RSUs) [Member]      
Share-Based Payment Arrangement, Expense $ 148,652    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 0    
The 2024 Plan [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized 800,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number 245,190    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant 700,556    
The 2024 Plan [Member] | Restricted Stock Units (RSUs) [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 1 year    
The 2019 Plan [member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number 1,387,415    
The 2007 Plan [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number 290,533