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Note 11 - Net Income Per Common Share - Reconciliation of the Earnings Per Share Computations (Details) - USD ($)
12 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Net income attributable to NTIC $ 6,324,700 $ 6,281,238
Basic-weighted shares outstanding (in shares) 9,216,216 9,116,472
Weighted shares assumed upon exercise of stock options (in shares) 418,812 757,667
Diluted – weighted shares outstanding (in shares) 9,635,028 9,874,139
Basic net income per share: (in dollars per share) $ 0.69 $ 0.69
Diluted net income per share: (in dollars per share) $ 0.66 $ 0.64