CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net sales	$ 15,252,218	$ 14,280,558	$ 44,356,495	$ 38,079,563
Cost of sales	7,801,896	7,280,930	22,507,964	19,316,610
Gross profit	7,450,322	6,999,628	21,848,531	18,762,953
Operating expenses:
Marketing and selling	4,435,912	4,991,626	13,159,524	13,649,370
Research and development	358,552	222,974	982,710	752,500
General and administrative	1,942,941	2,276,495	6,179,778	6,626,269
Total operating expenses	6,737,405	7,491,095	20,322,012	21,028,139
Income (loss) from operations	712,917	(491,467)	1,526,519	(2,265,186)
Other income (expense):
Interest income	8,917	49,601	28,117	154,148
Interest expense		(70,239)	(89,545)	(225,094)
Other income (expense)	13,335	(22,603)	42,392	(51,750)
Income (loss) before income taxes	735,169	(534,708)	1,507,483	(2,387,882)
Income tax expense (benefit)	239,245	(240,744)	484,392	(665,439)
Net income (loss)	$ 495,924	$ (293,964)	$ 1,023,091	$ (1,722,443)
Net income (loss) per share - basic (in dollars per share)	$ 0.04	$ (0.02)	$ 0.09	$ (0.14)
Net income (loss) per share - diluted (in dollars per share)	$ 0.04	$ (0.02)	$ 0.08	$ (0.14)
Weighted average number of common shares outstanding - basic (in shares)	12,008,420	12,316,878	12,036,124	12,222,146
Weighted average number of common shares outstanding - diluted (in shares)	12,373,340	12,316,878	12,340,045	12,222,146