Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)		Oct. 01, 2021	Jan. 01, 2021
Assets
Trading securities held in deferred compensation plan		$ 104,279,000	$ 88,747,000
Total		205,856,000	185,190,000
Liabilities
Deferred compensation plan	[1]	105,342,000	88,977,000
Total		105,342,000	88,977,000
Money market securities
Assets
Money market securities	[2]	76,579,000	51,442,000
Fixed income securities
Assets
Fixed income available for sale securities	[3]	24,998,000	45,001,000
Trading securities held in deferred compensation plan	[4]	24,789,000	26,274,000
Equity securities
Assets
Trading securities held in deferred compensation plan	[4]	79,490,000	62,473,000
Fair Value, Inputs, Level 1
Assets
Total		180,858,000	140,189,000
Liabilities
Deferred compensation plan	[1]	105,342,000	88,977,000
Total		105,342,000	88,977,000
Fair Value, Inputs, Level 1 | Money market securities
Assets
Money market securities	[2]	76,579,000	51,442,000
Fair Value, Inputs, Level 1 | Fixed income securities
Assets
Fixed income available for sale securities	[3]	0	0
Trading securities held in deferred compensation plan	[4]	24,789,000	26,274,000
Fair Value, Inputs, Level 1 | Equity securities
Assets
Trading securities held in deferred compensation plan	[4]	79,490,000	62,473,000
Fair Value, Inputs, Level 2
Assets
Total		24,998,000	45,001,000
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
Fixed income available for sale securities	[3]	24,998,000	45,001,000
Trading securities held in deferred compensation plan	[4]	0	0
Fair Value, Inputs, Level 2 | Equity securities
Assets
Trading securities held in deferred compensation plan	[4]	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
Fixed income available for sale securities	[3]	0	0
Trading securities held in deferred compensation plan	[4]	0	0
Fair Value, Inputs, Level 3 | Equity securities
Assets
Trading securities held in deferred compensation plan	[4]	$ 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 short-term investments on the Company’s unaudited condensed consolidated balance sheet.

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