CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net sales	$ 16,991,383	$ 15,385,522	$ 50,878,461	$ 44,785,404
Cost of sales	8,322,926	7,760,078	25,341,167	22,444,487
Gross profit	8,668,457	7,625,444	25,537,294	22,340,917
Operating expenses:
Marketing and selling	4,294,868	4,611,034	13,006,092	13,651,910
Research and development	319,995	358,552	971,176	982,710
General and administrative	2,307,105	1,942,941	6,662,811	6,179,778
Total operating expenses	6,921,968	6,912,527	20,640,079	20,814,398
Income from operations	1,746,489	712,917	4,897,215	1,526,519
Other income (expense):
Interest income	8,975	8,917	29,298	28,117
Interest expense			(2,359)	(89,545)
Other income (expense)	(9,901)	13,335	(67,684)	42,392
Income before income taxes	1,745,563	735,169	4,856,470	1,507,483
Income tax expense	616,019	239,245	1,515,530	484,392
Net income	$ 1,129,544	$ 495,924	$ 3,340,940	$ 1,023,091
Net income per share - basic (in dollars per share)	$ 0.09	$ 0.04	$ 0.28	$ 0.09
Net income per share - diluted (in dollars per share)	$ 0.09	$ 0.04	$ 0.27	$ 0.08
Weighted average number of common shares outstanding - basic (in shares)	12,191,778	12,008,420	12,125,262	12,036,124
Weighted average number of common shares outstanding - diluted (in shares)	12,787,610	12,373,340	12,576,126	12,340,045