Condensed Consolidated Statements of Operations (unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net sales	$ 20,505	$ 19,685	$ 84,807	$ 73,643
Cost of goods sold	11,180	11,432	46,635	40,653
Gross profit	9,325	8,253	38,172	32,990
Operating expenses:
Research and development expenses	733	663	2,122	1,881
Selling and marketing expenses	5,677	4,883	20,237	17,292
General and administrative expenses	2,391	2,087	8,173	6,496
Total operating expenses	8,801	7,633	30,532	25,669
Operating income	524	620	7,640	7,321
Other expense:
Interest expense, net	(8)	(7)	(62)	(25)
Other income (expense), net		(8)	(1)	(13)
Income before income taxes	516	605	7,577	7,283
Income tax expense	33	70	131	174
Net income	$ 483	$ 535	$ 7,446	$ 7,109
Net income per common share - basic (in Dollars per share)	$ 0.06	$ 0.07	$ 0.96	$ 1.00
- diluted (in Dollars per share)	$ 0.06	$ 0.07	$ 0.92	$ 0.92