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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, 2019	Nov. 30, 2018
Net income attributable to NTIC	$ 1,212,550	$ 1,497,059
Basic – weighted shares outstanding (in shares)	9,095,607	9,084,350
Weighted shares assumed upon exercise of stock options (in shares)	312,035	394,226
Diluted – weighted shares outstanding (in shares)	9,407,642	9,478,576
Basic net income per share: (in dollars per share)	$ 0.13	$ 0.16
Diluted net income per share: (in dollars per share)	$ 0.13	$ 0.16

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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