Segment Information (Analysis of Operations by Segment) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2011	Jun. 26, 2010	Jun. 25, 2011	Jun. 26, 2010
Sales	$ 1,647,616	$ 1,653,173	$ 3,510,617	$ 3,570,428
Other operating, income (expense)	13,916	(2,841)	13,916	11,348
Operating income (loss)	4,021	28,112	32,633	77,466
Contract [Member]
Sales	880,333	880,526	1,806,005	1,843,527
Segment income (loss)	17,425	19,401	26,430	53,160
Other operating, income (expense)	(8,058)		(8,058)	(861)
Operating income (loss)	9,367	19,401	18,372	52,299
Retail [Member]
Sales	767,283	772,647	1,704,612	1,726,901
Segment income (loss)	7,969	13,866	33,589	52,650
Other operating, income (expense)	(5,858)	(1,097)	(5,858)	(14,450)
Operating income (loss)	2,111	12,769	27,731	38,200
Corporate and Other [Member]
Sales
Segment income (loss)	(7,457)	(7,996)	(13,470)	(16,996)
Other operating, income (expense)		3,938		3,963
Operating income (loss)	(7,457)	(4,058)	(13,470)	(13,033)
Reportable Segment [Member]
Sales	1,647,616	1,653,173	3,510,617	3,570,428
Segment income (loss)	17,937	25,271	46,549	88,814
Other operating, income (expense)	(13,916)	2,841	(13,916)	(11,348)
Operating income (loss)	$ 4,021	$ 28,112	$ 32,633	$ 77,466