Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)		Jan. 03, 2020	Dec. 28, 2018
Assets
Trading securities held in deferred compensation plan		$ 75,934,000	$ 57,778,000
Total		172,310,000	145,486,000
Liabilities
Deferred compensation plan	[1]	76,357,000	59,349,000
Total		76,357,000	59,349,000
Fair Value, Inputs, Level 1
Assets
Total		117,145,000	63,991,000
Liabilities
Deferred compensation plan	[1]	76,357,000	59,349,000
Total		76,357,000	59,349,000
Fair Value, Inputs, Level 2
Assets
Total		55,165,000	81,495,000
Liabilities
Deferred compensation plan	[1]	0	0
Total		0	0
Fair Value, Inputs, Level 3
Assets
Total		0	0
Liabilities
Deferred compensation plan	[1]	0	0
Total		0	0
Money market securities
Assets
Money market securities	[2]	41,211,000	6,213,000
Money market securities | Fair Value, Inputs, Level 1
Assets
Money market securities	[2]	41,211,000	6,213,000
Money market securities | Fair Value, Inputs, Level 2
Assets
Money market securities	[2]	0	0
Money market securities | Fair Value, Inputs, Level 3
Assets
Money market securities	[2]	0	0
Fixed income securities
Assets
Fixed income available for sale securities	[3]	55,165,000	81,495,000
Trading securities held in deferred compensation plan	[4]	22,010,000	18,618,000
Fixed income securities | Fair Value, Inputs, Level 1
Assets
Fixed income available for sale securities	[3]	0	0
Trading securities held in deferred compensation plan	[4]	22,010,000	18,618,000
Fixed income securities | Fair Value, Inputs, Level 2
Assets
Fixed income available for sale securities	[3]	55,165,000	81,495,000
Trading securities held in deferred compensation plan	[4]	0	0
Fixed income securities | Fair Value, Inputs, Level 3
Assets
Fixed income available for sale securities	[3]	0	0
Trading securities held in deferred compensation plan	[4]	0	0
Equity securities
Assets
Trading securities held in deferred compensation plan	[4]	53,924,000	39,160,000
Equity securities | Fair Value, Inputs, Level 1
Assets
Trading securities held in deferred compensation plan	[4]	53,924,000	39,160,000
Equity securities | Fair Value, Inputs, Level 2
Assets
Trading securities held in deferred compensation plan	[4]	0	0
Equity securities | Fair Value, Inputs, Level 3
Assets
Trading securities held in deferred compensation plan	[4]	$ 0	$ 0

[1] Included in accounts payable and accrued liabilities and deferred compensation plan liabilities on the Company’s consolidated balance sheet.

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

[3] Included in short-term investments on the Company’s consolidated balance sheet.

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