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Note 10 - Net Income Per Common Share (Details Textual) - shares
3 Months Ended 9 Months Ended
May 31, 2025
May 31, 2024
May 31, 2025
May 31, 2024
Share-Based Payment Arrangement, Option [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,445,960 305,514 1,445,960 305,514