Note 10 - Net Income Per Common Share (Tables)

12 Months Ended

Aug. 31, 2013

Earnings Per Share [Abstract]

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

Numerator:	August 31, 2013		August 31, 2012
Net income attributable to NTIC	$	3,366,894	$	3,448,196
Denominator:
Basic – weighted shares outstanding		4,421,636		4,391,424
Weighted shares assumed upon exercise of stock options		54,259		60,170
Diluted – weighted shares outstanding		4,475,895		4,451,594
Basic earnings per share:	$	0.76	$	0.79
Diluted earnings per share:	$	0.75	$	0.78