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Leases - Leases included in the Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Mar. 30, 2019 | Dec. 29, 2018
--- | --- | ---
Assets |  |
Operating | $ 72,875 |
Finance | 50 |
Total leased assets | 72,925 | $ 0
Current |  |
Operating | 22,698 |
Finance | 21 |
Non-current |  |
Operating | 58,660 |
Finance | 28 |
Total leases | $ 81,407 |

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- Definition Assets, Lessee [Abstract] + References No definition available. + Details
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- Definition Operating And Finance Leases, Liability + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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