Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Consolidated Statements of Income [Abstract]
Net sales	$ 2,701,405	$ 2,752,504	$ 2,620,378
Cost of sales, including warehousing and distribution expenses	1,958,852	2,016,649	1,906,753
Gross profit on sales	742,553	735,855	713,625
Operating, general, and administrative expenses	615,521	621,575	608,309
Income from operations	127,032	114,280	105,316
Investment income	3,468	3,326	2,069
Other Income	414	0	0
Income before provision for income taxes	130,914	117,606	107,385
Provision for income taxes	48,403	42,022	39,094
Net income	$ 82,511	$ 75,584	$ 68,291
Weighted-average shares outstanding, basic and diluted	26,898,443	26,898,443	26,898,443
Cash dividends per share	$ 1.2	$ 2.17	$ 1.16
Basic and diluted earnings per share	$ 3.07	$ 2.81	$ 2.54