Long-Term Debt (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 01, 2012 item	Aug. 27, 2011	Sep. 01, 2012 item	Aug. 27, 2011
Long-Term Debt
Number of interest rate swap derivatives	3		3
Recognized losses (included in other comprehensive income), before taxes, on interest rate swap agreements	$ (228)	$ (1,066)	$ (781)	$ (878)
(Loss)/gain on swap agreements	(166)	(170)	(495)	(505)
Loss expected to be reclassified over next twelve months from other comprehensive income (loss) to interest expense	654		654
Liability for interest rate swap agreements included in other noncurrent liabilities	$ 3,196		$ 3,196