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Fair Value Measurement (Details 2) (USD $) In Thousands, unless otherwise specified | Jun. 26, 2012 | Dec. 27, 2011
--- | --- | ---
Carrying Amount | Level 1 |  |
Carrying amount and Fair value of financial instruments |  |
Revolver | $ 50,000 | $ 60,000
Carrying Amount | Level 2 |  |
Carrying amount and Fair value of financial instruments |  |
Installment loans | 1,579 | 1,679
Fair Value | Level 1 |  |
Carrying amount and Fair value of financial instruments |  |
Revolver | 50,000 | 60,000
Fair Value | Level 2 |  |
Carrying amount and Fair value of financial instruments |  |
Installment loans | $ 1,899 | $ 2,044

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- 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. Fair value of lines of credit at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Line-of-Credit Arrangement -URI http://asc.fasb.org/extlink&oid=6517033 + Details
Name: | us-gaap_LinesOfCreditFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- 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. Fair value of Loans Payable at the balance sheet date. + References No definition available. + Details
Name: | us-gaap_LoansPayableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant