Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 26

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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-Name Accounting Standards Codification

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Impairment

-URI http://asc.fasb.org/extlink&oid=6515133

Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Trading Securities which consist of all investments in certain debt and equity securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for which an entity has elected the fair value option. Trading generally reflects active and frequent buying and selling, and trading securities are generally used with the objective of generating profits on short-term differences in price, but this category of investments may also include items which are not intended to be sold in the near term or for which the fair value option has been elected.

+ References+ Details

Fair Value of Financial Instruments (Details) (USD $)	3 Months Ended									9 Months Ended	12 Months Ended	9 Months Ended		12 Months Ended	9 Months Ended
Fair Value of Financial Instruments (Details) (USD $)	Sep. 26, 2012	Sep. 26, 2012 Recurring [Member]	Dec. 28, 2011 Recurring [Member]	Sep. 26, 2012 Recurring [Member] Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]	Dec. 28, 2011 Recurring [Member] Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]	Sep. 26, 2012 Recurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Dec. 28, 2011 Recurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Sep. 26, 2012 Recurring [Member] Significant Unobservable Inputs (Level 3) [Member]	Dec. 28, 2011 Recurring [Member] Significant Unobservable Inputs (Level 3) [Member]	Sep. 26, 2012 Recurring [Member] Deferred compensation plan investments [Member]	Dec. 28, 2011 Recurring [Member] Deferred compensation plan investments [Member]	Sep. 26, 2012 Recurring [Member] Interest rate caps [Member]	Sep. 26, 2012 Nonrecurring [Member]	Dec. 28, 2011 Nonrecurring [Member]	Sep. 26, 2012 Nonrecurring [Member] Assets held for sale [Member]	Sep. 26, 2012 Nonrecurring [Member] Assets held for sale [Member] Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]	Sep. 26, 2012 Nonrecurring [Member] Assets held for sale [Member] Significant Other Observable Inputs (Level 2) [Member]	Sep. 26, 2012 Nonrecurring [Member] Assets held for sale [Member] Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan investments		$ 6,112,000	$ 4,935,000	$ 6,112,000	$ 4,935,000	$ 0	$ 0	$ 0	$ 0
Interest rate caps		8,000		0		8,000		0
Assets held for sale (1)															1,480,000	0	1,480,000	0
Total		6,120,000	4,935,000	6,112,000	4,935,000	8,000	0	0	0						1,480,000	0	1,480,000	0
Valuation Technique										market approach	market approach	income approach	income approach	income approach	market approach
Impaired assets related to underperforming and closed units													0	0
Asset held for sale, carrying value	3,900,000
Impairment of asset held for sale	$ 2,400,000