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Note 9 - Net Income Per Common Share (Tables) | 12 Months Ended
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Aug. 31, 2019
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
Numerator: |  | August 31, 2019 |  | August 31, 2018
Net income attributable to NTIC |  | $ | 5,209,622 |  |  | $ | 6,701,366 |
Denominator: |  |  |  |  |  |  |  |
Basic-weighted shares outstanding |  |  | 9,085,584 |  |  |  | 9,077,676 |
Weighted shares assumed upon exercise of stock options |  |  | 330,390 |  |  |  | 292,728 |
Diluted – weighted shares outstanding |  |  | 9,415,974 |  |  |  | 9,370,404 |
Basic earnings per share: |  | $ | 0.57 |  |  | $ | 0.74 |
Diluted earnings per share: |  | $ | 0.55 |  |  | $ | 0.72 |

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