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Deferred Gain (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Apr. 04, 2015 | Mar. 29, 2014
Deferred Revenue Disclosure [Abstract] |  |
Amortization of deferred gain | $ 0 us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized | $ 122 us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized

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

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- Definition The portion of the deferred gain that was recognized in the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35688829&loc=d3e50609-112754 + Details
Name: | us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration