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Leases - ROU assets and lease liabilities (Detail) - USD ($) $ in Thousands | Dec. 25, 2021 | Dec. 26, 2020
--- | --- | ---
Right-of-use assets |  |
Operating lease assets | $ 52,774 | $ 58,483
Finance lease assets | $ 3,014 | $ 4,035
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Property, Plant and Equipment, Net | Property, Plant and Equipment, Net
Current |  |
Operating lease liabilities | $ 7,634 | $ 8,232
Finance lease liabilities | $ 1,598 | $ 1,453
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Accrued Liabilities and Other Liabilities | Accrued Liabilities and Other Liabilities
Non-current |  |
Operating lease liabilities | $ 53,849 | $ 59,171
Finance lease liabilities | $ 1,459 | $ 2,631
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent

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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=123391704&loc=SL77918627-209977 + Details
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