Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)		Apr. 03, 2020	Jan. 03, 2020
Assets
Trading securities held in deferred compensation plan		$ 68,842,000	$ 75,934,000
Total		120,049,000	172,310,000
Liabilities
Deferred compensation plan	[1]	69,865,000	76,357,000
Total		69,865,000	76,357,000
Money market securities
Assets
Money market securities	[2]	4,758,000	41,211,000
Fixed income securities
Assets
Fixed income available-for-sale securities	[3]	46,449,000	55,165,000
Trading securities held in deferred compensation plan	[4]	29,905,000	22,010,000
Equity securities
Assets
Trading securities held in deferred compensation plan	[4]	38,937,000	53,924,000
Fair Value, Inputs, Level 1
Assets
Total		73,600,000	117,145,000
Liabilities
Deferred compensation plan	[1]	69,865,000	76,357,000
Total		69,865,000	76,357,000
Fair Value, Inputs, Level 1 | Money market securities
Assets
Money market securities	[2]	4,758,000	41,211,000
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]	29,905,000	22,010,000
Fair Value, Inputs, Level 1 | Equity securities
Assets
Trading securities held in deferred compensation plan	[4]	38,937,000	53,924,000
Fair Value, Inputs, Level 2
Assets
Total		46,449,000	55,165,000
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]	46,449,000	55,165,000
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.