CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $)	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Net sales	$ 17,252,008	$ 13,972,607
Cost of sales	8,778,760	6,861,468
Gross profit	8,473,248	7,111,139
Operating expenses:
Marketing and selling	4,549,044	4,646,786
Research and development	339,158	376,269
General and administrative	2,207,542	2,108,813
Total operating expenses	7,095,744	7,131,868
Operating income (loss)	1,377,504	(20,729)
Other income (expense):
Interest income	9,272	9,735
Interest expense	(2,358)	(81,150)
Other income (expense)	3,349	(19,655)
Income (loss) before income taxes	1,387,767	(111,799)
Income tax expense (benefit)	375,622	(36,452)
Net income (loss)	$ 1,012,145	$ (75,347)
Net income (loss) per share - basic (in dollars per share)	$ 0.08	$ (0.01)
Net income (loss) per share - diluted (in dollars per share)	$ 0.08	$ (0.01)
Weighted average number of common shares outstanding - basic (in shares)	12,038,232	12,136,125
Weighted average number of common shares outstanding - diluted (in shares)	12,396,930	12,136,125