Condensed Consolidated Statements of Operations (unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net sales	$ 34,116	$ 31,600	$ 64,302	$ 53,957
Cost of goods sold	19,424	16,930	35,454	29,221
Gross profit	14,692	14,670	28,848	24,736
Operating expenses:
Research and development expenses	690	591	1,389	1,219
Selling and marketing expenses	7,974	6,716	14,560	12,409
General and administrative expenses	3,032	2,303	5,783	4,406
Total operating expenses	11,696	9,610	21,732	18,034
Operating income	2,996	5,060	7,116	6,702
Other expense:
Interest expense, net	(39)	(9)	(54)	(18)
Other income (expense), net		(5)		(6)
Income before income taxes	2,957	5,046	7,062	6,678
Income tax expense	33	123	99	103
Net income	$ 2,924	$ 4,923	$ 6,963	$ 6,575
Net income per common share - basic (in Dollars per share)	$ 0.38	$ 0.69	$ 0.91	$ 0.93
- diluted (in Dollars per share)	$ 0.36	$ 0.63	$ 0.86	$ 0.84