Condensed Consolidated Statements of Income (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
REVENUES:
Net sales	$ 77,661	$ 68,710	$ 148,999	$ 132,922
Other	135	152	268	303
TOTAL REVENUE	77,796	68,862	149,267	133,225
COST OF GOODS SOLD	41,595	36,735	78,440	74,171
Gross profit	36,201	32,127	70,827	59,054
OPERATING EXPENSES:
Selling, general and administrative	19,730	19,372	42,593	39,027
Research and development	2,491	952	4,543	1,870
Legal settlement	0	0	(2,500)	0
Total operating expenses	22,221	20,324	44,636	40,897
Income from operations	13,980	11,803	26,191	18,157
OTHER INCOME	431	63	834	255
Income before income taxes	14,411	11,866	27,025	18,412
PROVISION FOR INCOME TAXES	(4,918)	(4,153)	(9,459)	(6,444)
NET INCOME	$ 9,493	$ 7,713	$ 17,566	$ 11,968
NET INCOME PER SHARE
Basic (in dollars per share)	$ 0.69	$ 0.57	$ 1.28	$ 0.88
Diluted (in dollars per share)	$ 0.67	$ 0.56	$ 1.24	$ 0.86
WEIGHTED AVERAGE NUMBER OF SHARES
Basic (in shares)	13,852	13,469	13,772	13,665
Diluted (in shares)	14,257	13,657	14,166	13,888