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Note 9 - Net Income Per Common Share - Reconciliation of the Earnings Per Share Computations (Details) - USD ($)
 3 Months Ended
Nov. 30, 2023
Nov. 30, 2022
Net income $ 895,521 $ 502,242
Basic-weighted shares outstanding (in shares) 9,427,588 9,317,680
Weighted shares assumed upon exercise of stock options (in shares) 278,993 401,251
Diluted – weighted shares outstanding (in shares) 9,706,581 9,718,931
Basic net income per share: (in dollars per share) $ 0.09 $ 0.05
Diluted net income per share: (in dollars per share) $ 0.09 $ 0.05