CONDENSED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		9 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013
Income Statement [Abstract]
Net sales	$ 3,740,567	$ 3,094,779	$ 9,463,059	$ 8,502,994
Cost of sales	227,600	451,935	1,168,219	1,337,583
Gross profit	3,512,967	2,642,844	8,294,840	7,165,411
Operating expenses
Selling, general, and administrative	1,204,312	903,589	3,378,950	2,689,632
Research and development	234,685	206,424	750,808	634,281
Total operating expenses	1,438,997	1,110,013	4,129,758	3,323,913
Income from operations	2,073,970	1,532,831	4,165,082	3,841,498
Interest income	8,017	9,203	25,000	40,005
Interest expense
Miscellaneous income		4,694		35,488
Gain on currency exchange	7,340	(980)	35,477	96,662
Total other income (expense)	15,357	12,917	60,477	172,155
Income before provision for income taxes	2,089,327	1,545,748	4,225,559	4,013,653
Provision for income taxes	(781,778)	(552,518)	(1,422,991)	(1,371,862)
Net Income	$ 1,307,549	$ 993,230	$ 2,802,568	$ 2,641,791
Earnings per share - Basic	$ 0.08	$ 0.06	$ 0.17	$ 0.17
Earnings per share - Diluted	$ 0.08	$ 0.06	$ 0.17	$ 0.16
Weighted-average common shares outstanding
Basic	16,193,976	16,024,467	16,117,198	15,984,819
Diluted	16,455,078	16,335,608	16,361,695	16,307,618