Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 26, 2011
Consolidated Statements Of Operations [Abstract]
Net sales	$ 137,036	$ 124,374
Cost of goods sold	85,630	78,962
Gross profit	51,406	45,412
Selling, general and administrative expenses	26,914	26,222
Income from operations	24,492	19,190
Interest expense, net	32	70
Income before taxes	24,460	19,120
Provision for taxes	8,882	6,734
Net income	$ 15,578	$ 12,386
Earnings Per Share:
Basic	$ 0.87	$ 0.69
Diluted	$ 0.85	$ 0.68
Weighted Average Shares Outstanding:
Basic	17,978	17,891
Diluted	18,250	18,227