Consolidated Statements of Operations (USD $)	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Consolidated Statements of Operations [Abstract]
Net sales	$ 52,918,875	$ 41,442,680	$ 34,798,829
Cost of sales	26,821,427	21,739,014	17,973,314
Gross profit	26,097,448	19,703,666	16,825,515
Operating expenses:
Marketing and selling	18,966,887	11,868,737	10,327,396
Research and development	1,008,767	1,235,367	1,241,095
General and administrative	7,799,210	6,391,003	6,006,906
Total operating expenses	27,774,864	19,495,107	17,575,397
Income (loss) from operations	(1,677,416)	208,559	(749,882)
Other income (expense):
Interest income	139,859	239,171	283,195
Other income (expense)	(123,901)		1,200,442
Interest expense	(277,008)	(177,401)	(259,341)
Total other income (loss)	(261,050)	61,770	1,224,296
Net income (loss) before income taxes	(1,938,466)	270,329	474,414
Income tax benefit (expense)	623,162	(523,864)	(365,742)
Net income (loss)	$ (1,315,304)	$ (253,535)	$ 108,672
Net income (loss) per common share-basic	$ (0.11)	$ (0.02)	$ 0.01
Net income (loss) per common share-diluted	$ (0.11)	$ (0.02)	$ 0.01
Weighted average number of common shares outstanding-basic	12,217,900	12,181,549	12,045,313
Weighted average number of common shares outstanding-diluted	12,217,900	12,181,549	12,639,853