Consolidated Statements of Comprehensive Income (unaudited) (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 16, 2012	Jun. 18, 2011	Jun. 16, 2012	Jun. 18, 2011
Change in fair value of derivatives, net of tax	$ 0	$ 48	$ 0	$ 97

Total tax effect of the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. The change includes an entity's share of an equity investee's increase or decrease in deferred hedging gains or losses. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

No definition available.

Name:	us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration