Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements of Operations [Abstract]
Net sales	$ 14,280,558	$ 10,244,158	$ 38,079,563	$ 30,321,451
Cost of sales	7,280,930	5,202,198	19,316,610	16,007,297
Gross profit	6,999,628	5,041,960	18,762,953	14,314,154
Operating expenses:
Marketing and selling	5,237,739	3,151,458	14,132,466	8,800,449
Research and development	222,974	246,401	752,500	930,819
General and administrative	2,030,382	1,369,406	6,143,173	4,807,757
Total operating expenses	7,491,095	4,767,265	21,028,139	14,539,025
Income (loss) from operations	(491,467)	274,695	(2,265,186)	(224,871)
Other income (expense):
Interest income	49,601	51,514	154,148	156,889
Interest expense	(70,239)	(36,540)	(225,094)	(117,128)
Other income (expense)	(22,603)	4,325	(51,750)	(57,064)
Net income (loss) before income taxes	(534,708)	293,994	(2,387,882)	(242,174)
Income tax expense (benefit)	(240,744)	198,974	(665,439)	183,379
Net income (loss)	$ (293,964)	$ 95,020	$ (1,722,443)	$ (425,553)
Net income (loss) per share - basic	$ (0.02)	$ 0.01	$ (0.14)	$ (0.03)
Net income (loss) per share - diluted	$ (0.02)	$ 0.01	$ (0.14)	$ (0.03)
Weighted average number of common shares outstanding - basic	12,316,878	12,196,977	12,222,146	12,194,620
Weighted average number of common shares outstanding - diluted	12,316,878	12,724,610	12,222,146	12,194,620