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Fair Value of Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified

12 Months Ended

Dec. 31, 2014

Dec. 25, 2013

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Impairment of assets held and used

$ 4,800us-gaap_ImpairmentOfLongLivedAssetsHeldForUse

Recurring [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Total

9,937us-gaap_AssetsFairValueDisclosure
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= us-gaap_FairValueMeasurementsRecurringMember

11,211us-gaap_AssetsFairValueDisclosure
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= us-gaap_FairValueMeasurementsRecurringMember

Recurring [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Total

9,295us-gaap_AssetsFairValueDisclosure
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8,168us-gaap_AssetsFairValueDisclosure
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= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember

Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Total

642us-gaap_AssetsFairValueDisclosure
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3,043us-gaap_AssetsFairValueDisclosure
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Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Total

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Recurring [Member] | Deferred compensation plan investments [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Deferred compensation plan investments

9,295us-gaap_TradingSecurities
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^[1]

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^[1]

Valuation technique

market approach

market approach

Recurring [Member] | Deferred compensation plan investments [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Deferred compensation plan investments

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= us-gaap_FairValueMeasurementsRecurringMember

Recurring [Member] | Deferred compensation plan investments [Member] | Significant Other Observable Inputs (Level 2) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Deferred compensation plan investments

0us-gaap_TradingSecurities
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0us-gaap_TradingSecurities
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Recurring [Member] | Deferred compensation plan investments [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Deferred compensation plan investments

0us-gaap_TradingSecurities
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0us-gaap_TradingSecurities
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/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember

Recurring [Member] | Interest rate swaps [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Interest rate swaps and caps

642us-gaap_DerivativeAssets
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^[2]

3,032us-gaap_DerivativeAssets
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^[2]

Valuation technique

income approach

income approach

Recurring [Member] | Interest rate swaps [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Interest rate swaps and caps

0us-gaap_DerivativeAssets
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Recurring [Member] | Interest rate swaps [Member] | Significant Other Observable Inputs (Level 2) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Interest rate swaps and caps

642us-gaap_DerivativeAssets
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Recurring [Member] | Interest rate swaps [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Interest rate swaps and caps

0us-gaap_DerivativeAssets
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Recurring [Member] | Interest rate caps [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Interest rate swaps and caps

0us-gaap_DerivativeAssets
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^[2]

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= us-gaap_FairValueMeasurementsRecurringMember

^[2]

Valuation technique

income approach

income approach

Recurring [Member] | Interest rate caps [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Interest rate swaps and caps

0us-gaap_DerivativeAssets
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Recurring [Member] | Interest rate caps [Member] | Significant Other Observable Inputs (Level 2) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Interest rate swaps and caps

0us-gaap_DerivativeAssets
/ us-gaap_FairValueByAssetClassAxis
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Recurring [Member] | Interest rate caps [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Interest rate swaps and caps

0us-gaap_DerivativeAssets
/ us-gaap_FairValueByAssetClassAxis
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0us-gaap_DerivativeAssets
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Nonrecurring [Member] | Assets held and used [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Impairment of assets held and used

320us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
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Valuation technique

income approach

income approach

Nonrecurring [Member] | Assets held and used [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets held and used

$ 0us-gaap_AssetsFairValueDisclosureNonrecurring
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^[3]

$ 1,198us-gaap_AssetsFairValueDisclosureNonrecurring
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^[3]

[1]	The fair values of our deferred compensation plan investments are based on the closing market prices of the participants’ elected investments.
[2]	The fair values of our interest rate swaps and interest rate caps are based upon Level 2 inputs, which include valuation models as reported by our counterparties. The key inputs for the valuation models are quoted market prices, interest rates and forward yield curves. See Note 10 for details on the interest rate swaps and interest rate caps.
[3]	As of both December 31, 2014 and December 25, 2013, impaired assets related to an underperforming restaurant were written down to their fair value. To determine fair value, we used the income approach, which assumes that the future cash flows reflect current market expectations. These fair value measurements require significant judgment using Level 3 inputs, such as discounted cash flows from operations, which are not observable from the market, directly or indirectly.

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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