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Change in Accounting Estimate for Self-Insured Claims - Effect of Increase in Cost of Insurance and Claims (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Change in Accounting Estimate [Line Items]
Operating income	$ 26,326	$ 63,116	$ 122,025	$ 191,136
Net income	$ 19,364	$ 50,033	$ 91,063	$ 149,753
Basic earnings per share	$ 0.56	$ 1.41	$ 2.61	$ 4.21
Diluted earnings per share	$ 0.56	$ 1.41	$ 2.61	$ 4.21
Development of Prior Year Self Insured Claims Estimates
Change in Accounting Estimate [Line Items]
Operating income	$ 9,219	$ 4,550	$ 22,860	$ 6,666
Net income	$ 6,951	$ 3,444	$ 17,236	$ 5,046
Basic earnings per share	$ 0.2	$ 0.1	$ 0.49	$ 0.14
Diluted earnings per share	$ 0.2	$ 0.1	$ 0.49	$ 0.14

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