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Net Income per Share - Additional Information (Detail)	12 Months Ended
	Dec. 28, 2024 $ / shares shares	Dec. 30, 2023 $ / shares shares	Dec. 31, 2022 $ / shares shares	Dec. 26, 2020 shares
Earnings Per Share Note [Line Items]
Net income per common share - basic | $ / shares	$ 5.07	$ 6.23	$ 5.46
Conversion ratio for Class B to Class A shares | shares				1
Performance-Based Awards
Earnings Per Share Note [Line Items]
Number of shares not included because the performance criteria was not expected to be met | shares	52,000	54,000	1,000
Common Class A
Earnings Per Share Note [Line Items]
Net income per common share - basic | $ / shares	$ 5.07	$ 6.23	$ 5.46
Antidilutive securities excluded from computation of earnings per share | shares	142,000	52,000	17,000
Common Class B
Earnings Per Share Note [Line Items]
Net income per common share - basic | $ / shares	$ 5.07	$ 6.23	$ 5.46

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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