Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)		Jun. 30, 2023	Dec. 30, 2022
Assets
Trading securities held in deferred compensation plan		$ 108,140,000	$ 100,731,000
Total		161,430,000	152,890,000
Liabilities
Deferred compensation plan	[1]	110,191,000	101,354,000
Total		110,191,000	101,354,000
Money market securities
Assets
Money market securities	[2]	53,290,000	52,159,000
Fixed income securities
Assets
Trading securities held in deferred compensation plan	[3]	34,241,000	32,851,000
Equity securities
Assets
Trading securities held in deferred compensation plan	[3]	73,899,000	67,880,000
Fair Value, Inputs, Level 1
Assets
Total		161,430,000	152,890,000
Liabilities
Deferred compensation plan	[1]	110,191,000	101,354,000
Total		110,191,000	101,354,000
Fair Value, Inputs, Level 1 | Money market securities
Assets
Money market securities	[2]	53,290,000	52,159,000
Fair Value, Inputs, Level 1 | Fixed income securities
Assets
Trading securities held in deferred compensation plan	[3]	34,241,000	32,851,000
Fair Value, Inputs, Level 1 | Equity securities
Assets
Trading securities held in deferred compensation plan	[3]	73,899,000	67,880,000
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.