Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands		Jan. 01, 2016	Jan. 02, 2015
Assets
Money market securities	[1]	$ 10,530	$ 45,478
Total		99,312	114,239
Liabilities
Deferred compensation plan	[2]	46,740	45,394
Total		46,740	45,394
Fixed income securities
Assets
Fixed income available-for-sale securities	[3]	45,842	24,913
Fixed income trading securities held in deferred compensation plan	[4]	9,295	9,672
Equity securities
Assets
Equity trading securities held in deferred compensation plan	[4]	33,645	34,176
Fair Value, Inputs, Level 1
Assets
Money market securities	[1]	10,530	45,478
Total		53,470	89,326
Liabilities
Deferred compensation plan	[2]	46,740	45,394
Total		46,740	45,394
Fair Value, Inputs, Level 1 | Fixed income securities
Assets
Fixed income available-for-sale securities	[3]	0	0
Fixed income trading securities held in deferred compensation plan	[4]	9,295	9,672
Fair Value, Inputs, Level 1 | Equity securities
Assets
Equity trading securities held in deferred compensation plan	[4]	33,645	34,176
Fair Value, Inputs, Level 2
Assets
Money market securities	[1]	0	0
Total		45,842	24,913
Liabilities
Deferred compensation plan	[2]	0	0
Total		0	0
Fair Value, Inputs, Level 2 | Fixed income securities
Assets
Fixed income available-for-sale securities	[3]	45,842	24,913
Fixed income trading securities held in deferred compensation plan	[4]	0	0
Fair Value, Inputs, Level 2 | Equity securities
Assets
Equity trading securities held in deferred compensation plan	[4]	0	0
Fair Value, Inputs, Level 3
Assets
Money market securities	[1]	0	0
Total		0	0
Liabilities
Deferred compensation plan	[2]	0	0
Total		0	0
Fair Value, Inputs, Level 3 | Fixed income securities
Assets
Fixed income available-for-sale securities	[3]	0	0
Fixed income trading securities held in deferred compensation plan	[4]	0	0
Fair Value, Inputs, Level 3 | Equity securities
Assets
Equity trading securities held in deferred compensation plan	[4]	$ 0	$ 0

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

[2] Included in accrued liabilities and deferred compensation on the Company’s consolidated balance sheet.

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

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