Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Net sales	$ 160,578	$ 167,160
Cost of sales	99,716	102,457
Gross profit	60,862	64,703
Selling, general and administrative expenses	28,409	27,395
Research and development expenses	5,161	4,795
Amortization of intangibles	1,468	1,595
	35,038	33,785
Operating income	25,824	30,918
Interest expense	423	336
Other (income) expense, net	101	(26)
Income before income taxes	25,300	30,608
Income taxes	7,411	9,030
Net income	17,889	21,578
Net income per share (see note 9):
Basic (in Dollars per share)	$ 0.83	$ 0.98
Diluted (in Dollars per share)	$ 0.81	$ 0.96
Weighted average shares and equivalent shares outstanding:
Basic (in Shares)	21,608	21,878
Diluted (in Shares)	21,929	22,328
Comprehensive income (see note 14)	$ 27,031	$ 32,885