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Fair Value Measurements - Aggregate Fair Value of Derivative Financial Instruments (Detail) - Fair Value, Measurements, Recurring - Interest Rate Swap - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap liability	$ 32,542	$ 21,597
Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap liability	0	0
Fair Value Measurements Using Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap liability	32,542	21,597
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap liability	$ 0	$ 0

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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