CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $)	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Sales, net	$ 23,022,385	$ 18,873,689	$ 51,162,476	$ 41,498,749
Cost of goods sold	10,393,388	7,733,630	21,208,891	16,541,417
Gross profit	12,628,997	11,140,059	29,953,585	24,957,332
Operating and administrative expenses:
Sales and marketing	1,823,881	1,541,011	3,414,771	2,870,190
General and administrative	808,754	851,762	1,855,387	1,511,644
Research and development	792,097	718,512	1,028,512	899,186
Total operating expenses	3,424,732	3,111,285	6,298,670	5,281,020
Income from operations	9,204,265	8,028,774	23,654,915	19,676,312
Other income:
Interest income, net	32,819	22,953	64,926	47,142
Income before income tax expenses	9,237,084	8,051,727	23,719,841	19,723,454
Income tax expenses	1,386,963	970,671	3,562,488	1,694,103
Net income	7,850,121	7,081,056	20,157,353	18,029,351
Other comprehensive income:
Cumulative currency translation adjustments	(810,353)	1,511,453	675,646	2,175,874
Total comprehensive income	$ 7,039,768	$ 8,592,509	$ 20,832,999	$ 20,205,225
Earnings per common stock- Basic (in dollars per share)	$ 0.21	$ 0.19	$ 0.54	$ 0.48
Earnings per common stock - Diluted (in dollars per share)	$ 0.21	$ 0.19	$ 0.54	$ 0.48
Weighted average common stock outstanding
Basic (in shares)	37,239,536	37,239,536	37,239,536	37,239,536
Diluted (in shares)	37,239,536	37,759,494	37,241,343	37,827,717