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Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $)
In Thousands, unless otherwise specified
Jan. 03, 2014
Dec. 28, 2012
Assets    
Money market securities $ 37,099 [1] $ 49,134 [1]
Total 108,249 97,104
Liabilities    
Deferred compensation plan 37,926 [2] 26,984 [2]
Total 37,926 26,984
Fixed income securities
    
Assets    
Fixed income available for sale securities 33,171 [3] 20,881 [3]
Fixed income trading securities held in deferred compensation plan 9,535 [4] 9,911 [4]
Equity securities
    
Assets    
Equity trading securities held in deferred compensation plan 28,444 [4] 17,178 [4]
Fair Value, Inputs, Level 1
    
Assets    
Money market securities 37,099 [1] 49,134 [1]
Total 75,078 76,223
Liabilities    
Deferred compensation plan 37,926 [2] 26,984 [2]
Total 37,926 26,984
Fair Value, Inputs, Level 1 | Fixed income securities
    
Assets    
Fixed income available for sale securities 0 [3] 0 [3]
Fixed income trading securities held in deferred compensation plan 9,535 [4] 9,911 [4]
Fair Value, Inputs, Level 1 | Equity securities
    
Assets    
Equity trading securities held in deferred compensation plan 28,444 [4] 17,178 [4]
Fair Value, Inputs, Level 2
    
Assets    
Money market securities 0 [1] 0 [1]
Total 33,171 20,881
Liabilities    
Deferred compensation plan 0 [2] 0 [2]
Total 0 0
Fair Value, Inputs, Level 2 | Fixed income securities
    
Assets    
Fixed income available for sale securities 33,171 [3] 20,881 [3]
Fixed income trading securities held in deferred compensation plan 0 [4] 0 [4]
Fair Value, Inputs, Level 2 | Equity securities
    
Assets    
Equity trading securities held in deferred compensation plan 0 [4] 0 [4]
Fair Value, Inputs, Level 3
    
Assets    
Money market securities 0 [1] 0 [1]
Total 0 0
Liabilities    
Deferred compensation plan 0 [2] 0 [2]
Total 0 0
Fair Value, Inputs, Level 3 | Fixed income securities
    
Assets    
Fixed income available for sale securities 0 [3] 0 [3]
Fixed income trading securities held in deferred compensation plan 0 [4] 0 [4]
Fair Value, Inputs, Level 3 | Equity securities
    
Assets    
Equity trading securities held in deferred compensation plan $ 0 [4] $ 0 [4]
[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.