CONDENSED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		6 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2014	Feb. 28, 2013
Income Statement [Abstract]
Net sales	$ 3,081,492	$ 3,118,121	$ 5,722,492	$ 5,408,215
Cost of sales	492,199	498,778	940,619	885,648
Gross profit	2,589,293	2,619,343	4,781,873	4,522,567
Operating expenses
Selling, general, and administrative	1,103,547	854,983	2,174,638	1,786,043
Research and development	354,007	247,522	516,123	427,857
Total operating expenses	1,457,554	1,102,505	2,690,761	2,213,900
Income from operations	1,131,739	1,516,838	2,091,112	2,308,667
Interest income	7,957	17,074	16,983	30,802
Miscellaneous income	0	15,390	0	30,794
Gain on currency exchange	4,428	22,988	28,137	97,642
Total other income (expense)	12,385	55,452	45,120	159,238
Income from continuing operations before provision for income taxes	1,144,124	1,572,290	2,136,232	2,467,905
Provision for income taxes	(334,260)	(510,715)	(641,213)	(819,344)
Net Income	$ 809,864	$ 1,061,575	$ 1,495,019	$ 1,648,561
Earnings per share - Basic	$ 0.05	$ 0.07	$ 0.09	$ 0.10
Earnings per share - Diluted	$ 0.05	$ 0.06	$ 0.09	$ 0.10
Weighted-average common shares outstanding
Basic	16,107,327	16,004,397	16,078,173	15,965,890
Diluted	16,356,544	16,336,353	16,319,902	16,305,235