Condensed Consolidated Statements of Operations (unaudited) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Income Statement [Abstract]
Net revenues	$ 6,748,518	$ 6,012,193	$ 17,872,044	$ 16,014,539
Cost of revenues	1,444,764	1,194,815	4,334,699	3,541,903
Gross margin	5,303,754	4,817,378	13,537,345	12,472,636
Operating expenses
Selling, general, and administrative	1,954,871	1,680,707	5,766,563	5,079,985
Research and development	253,799	348,427	952,635	1,161,124
Total operating expenses	2,208,670	2,029,134	6,719,198	6,241,109
Income from operations	3,095,084	2,788,244	6,818,147	6,231,527
Other income (expense)
Interest income	4,663	4,553	13,548	13,507
Gain (loss) on currency exchange	(14,913)	7,733	5,573	(35,490)
Total other income (expense)	(10,250)	12,286	19,121	(21,983)
Income before provision for income taxes	3,084,834	2,800,530	6,837,268	6,209,544
Provision for income taxes	(1,004,805)	(891,191)	(2,199,914)	(2,048,383)
Net Income	$ 2,080,029	$ 1,909,339	$ 4,637,354	$ 4,161,161
Earnings per share
Basic	$ .12	$ .11	$ .27	$ .24
Diluted	$ .12	$ .11	$ .27	$ .24
Weighted-average common shares outstanding
Basic	17,241,891	17,028,634	17,233,470	17,000,228
Diluted	17,585,528	17,227,540	17,454,864	17,219,835