Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)		Jun. 28, 2024	Dec. 29, 2023
Assets
Trading securities held in deferred compensation plan		$ 118,796,000	$ 115,187,000
Total		174,927,000	169,873,000
Liabilities
Deferred compensation plan	[1]	120,123,000	116,564,000
Total		120,123,000	116,564,000
Money market securities
Assets
Money market securities	[2]	56,131,000	54,686,000
Fixed income securities
Assets
Trading securities held in deferred compensation plan	[3]	38,152,000	36,788,000
Equity securities
Assets
Trading securities held in deferred compensation plan	[3]	80,644,000	78,399,000
Fair Value, Inputs, Level 1
Assets
Total		174,927,000	169,873,000
Liabilities
Deferred compensation plan	[1]	120,123,000	116,564,000
Total		120,123,000	116,564,000
Fair Value, Inputs, Level 1 | Money market securities
Assets
Money market securities	[2]	56,131,000	54,686,000
Fair Value, Inputs, Level 1 | Fixed income securities
Assets
Trading securities held in deferred compensation plan	[3]	38,152,000	36,788,000
Fair Value, Inputs, Level 1 | Equity securities
Assets
Trading securities held in deferred compensation plan	[3]	80,644,000	78,399,000
Fair Value, Inputs, Level 2
Assets
Total		0	0
Liabilities
Deferred compensation plan	[1]	0	0
Total		0	0
Fair Value, Inputs, Level 2 | Money market securities
Assets
Money market securities	[2]	0	0
Fair Value, Inputs, Level 2 | Fixed income securities
Assets
Trading securities held in deferred compensation plan	[3]	0	0
Fair Value, Inputs, Level 2 | Equity securities
Assets
Trading securities held in deferred compensation plan	[3]	0	0
Fair Value, Inputs, Level 3
Assets
Total		0	0
Liabilities
Deferred compensation plan	[1]	0	0
Total		0	0
Fair Value, Inputs, Level 3 | Money market securities
Assets
Money market securities	[2]	0	0
Fair Value, Inputs, Level 3 | Fixed income securities
Assets
Trading securities held in deferred compensation plan	[3]	0	0
Fair Value, Inputs, Level 3 | Equity securities
Assets
Trading securities held in deferred compensation plan	[3]	$ 0	$ 0

[1] Included in accrued payroll and employee benefits and deferred compensation plan liabilities on the Company’s unaudited condensed consolidated balance sheet.

[2] Included in cash and cash equivalents on the Company’s unaudited condensed consolidated balance sheet.

[3] Included in prepaid expenses and other current assets and deferred compensation plan assets on the Company’s unaudited condensed consolidated balance sheet.