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Note 10 - Net Income Per Common Share | 6 Months Ended
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Feb. 28, 2015
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | 10. NET (LOSS) INCOME PER COMMON SHARE Basic net (loss) income per common share is computed by dividing net (loss) income by the weighted average number of common shares outstanding. Diluted net (loss) income per share assumes the exercise of stock options using the treasury stock method, if dilutive. The following is a reconciliation of the earnings (loss) per share computation:
|  | Three Months Ended |  |  | Six Months Ended |
Numerators: |  | February 28, 2015 |  |  | February 28, 2014 |  |  | February 28, 2015 |  |  | February 28, 2014 |
Net (loss) income attributable to NTIC |  | $ | (128,644 | ) |  | $ | 1,025,044 |  |  | $ | 876,621 |  |  | $ | 1,883,630 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic – weighted shares outstanding |  |  | 4,522,514 |  |  |  | 4,434,837 |  |  |  | 4,516,311 |  |  |  | 4,434,770 |
Weighted shares assumed upon exercise of stock options |  |  | - |  |  |  | 144,766 |  |  |  | 139,481 |  |  |  | 131,333 |
Diluted – weighted shares outstanding |  |  | 4,522,514 |  |  |  | 4,579,603 |  |  |  | 4,655,792 |  |  |  | 4,566,103 |
Basic earnings (loss) per share: |  | $ | (0.03 | ) |  | $ | 0.23 |  |  | $ | 0.20 |  |  | $ | 0.42 |
Diluted earnings (loss) per share: |  | $ | (0.03 | ) |  | $ | 0.22 |  |  | $ | 0.19 |  |  | $ | 0.41 |
The dilutive impact summarized above relates to the periods when the average market price of the Company’s common stock exceeded the exercise price of the potentially dilutive option securities granted. Earnings (loss) per common share were based on the weighted average number of common shares outstanding during the periods when computing the basic earnings (loss) per share. When dilutive, stock options are included as equivalents using the treasury stock market method when computing the diluted earnings (loss) per share. Excluded from the computation of diluted earnings per share for the three months ended February 28, 2015 were all options outstanding to purchase 263,734 shares of common stock, due to the Company’s net loss in the period.

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