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Note 9 - Net Income Per Common Share (Tables) | 6 Months Ended
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Feb. 28, 2023
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended February 28, |  |  | Six Months Ended February 28, |
Numerator: |  | 2023 (Restated) |  |  | 2022 |  |  | 2023 (Restated) |  |  | 2022 |
Net income attributable to NTIC |  | $ | 411,497 |  |  | $ | 182,847 |  |  | $ | 913,739 |  |  | $ | 4,676,606 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic – weighted shares outstanding |  |  | 9,366,357 |  |  |  | 9,214,817 |  |  |  | 9,353,989 |  |  |  | 9,211,858 |
Weighted shares assumed upon exercise of stock options |  |  | 381,104 |  |  |  | 468,609 |  |  |  | 391,177 |  |  |  | 524,202 |
Diluted – weighted shares outstanding |  |  | 9,747,461 |  |  |  | 9,683,426 |  |  |  | 9,745,166 |  |  |  | 9,736,060 |
Basic net income per share: |  | $ | 0.04 |  |  | $ | 0.02 |  |  | $ | 0.10 |  |  | $ | 0.51 |
Diluted net income per share: |  | $ | 0.04 |  |  | $ | 0.02 |  |  | $ | 0.09 |  |  | $ | 0.48 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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