Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Consolidated Statements Of Operations [Abstract]
Net sales	$ 529,287	$ 455,716	$ 377,378
Cost of goods sold	338,211	282,858	245,592
Gross profit	191,076	172,858	131,786
Selling, general and administrative expenses	106,413	97,976	88,117
Income from operations	84,663	74,882	43,669
Interest expense, net	156	209	343
Income before income taxes	84,507	74,673	43,326
Income taxes	31,230	28,535	16,831
Net income	$ 53,277	$ 46,138	$ 26,495
Earnings Per Share:
Basic	$ 2.97	$ 2.60	$ 1.50
Diluted	$ 2.93	$ 2.55	$ 1.47
Weighted Average Shares Outstanding:
Basic	17,933	17,767	17,658
Diluted	18,185	18,116	17,996