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Commitments (Schedule of Rent Expense and Sublease Income) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 29, 2017 | Dec. 30, 2016 | Jan. 01, 2016
Commitments and Contingencies Disclosure [Abstract] |  |  |
Gross rental expense | $ 6,160 | $ 9,676 | $ 13,942
less: Sublease income | (1,225) | (3,553) | (5,205)
Net rental expense | $ 4,935 | $ 6,123 | $ 8,737

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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
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- Definition The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697 + Details
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