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Fair Value Measurement (Details 2) (Level 2, USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 25, 2012
--- | --- | ---
Carrying Amount |  |
Carrying amount and Fair value of financial instruments |  |
Installment loans | $ 1,233 | $ 1,473
Fair Value |  |
Carrying amount and Fair value of financial instruments |  |
Installment loans | $ 1,434 | $ 1,752

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

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- Definition Fair value portion of contractual obligation to pay money on demand or on fixed or determinable dates. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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