Debt and Credit Arrangements (Fair Values of Derivative Instruments) (Detail) (Interest Rate Swap [Member], Other Noncurrent Liabilities [Member], USD $) In Thousands, unless otherwise specified	Dec. 25, 2011	Dec. 26, 2010
Interest Rate Swap [Member] \| Other Noncurrent Liabilities [Member]
Debt Instrument [Line Items]
Derivatives assets designated as hedging instruments, fair value	$ 11
Derivative liabilities designated as hedging instruments, fair value		$ 313

Fair value of all liability derivatives designated as cash flow hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959

Name:	us-gaap_CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant