Leases - ROU assets and lease liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Right-of-use assets
Operating lease assets	$ 43,768	$ 52,774
Finance lease assets	$ 1,424	$ 3,014
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	$ 8,866	$ 7,634
Finance lease liabilities	$ 935	$ 1,598
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	$ 45,274	$ 53,849
Finance lease liabilities	$ 524	$ 1,459
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent