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Note 9 - Net Income Per Common Share (Tables)

6 Months Ended

Feb. 28, 2013

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

		Three Months Ended								Six Months Ended
Numerators:		February 28, 2013				February 29, 2012				February 28, 2013				February 29, 2012
Net income attributable to NTIC		$	434,410			$	606,193			$	824,032			$	1,564,950

Denominator:
Basic – weighted shares outstanding			4,418,821				4,398,356				4,409,954				4,366,932
Weighted shares assumed upon exercise of stock options			66,255				68,079				50,243				73,069
Diluted – weighted shares outstanding			4,485,076				4,466,435				4,460,197				4,440,001
Basic earnings per share:		$	0.10			$	0.14			$	0.19			$	0.36
Diluted earnings per share:		$	0.10			$	0.14			$	0.18			$	0.35