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Employee Benefit Plans (Schedule of Changes in Fair Value of Plan Assets, Other Postretirement Benefit Plans) (Details) (Other Postretirement Benefit Plans, Defined Benefit [Member], USD $)
In Thousands, unless otherwise specified
Dec. 29, 2013
Dec. 30, 2012
Jan. 01, 2012
Jan. 02, 2011
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 13,396 $ 12,958 $ 11,411  
Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 7,479 8,553    
Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 4,700 3,211    
Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,217 1,194 1,130 1,087
Cash [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 167 798    
Cash [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 167 798    
Cash [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Cash [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, U.S. Large-cap [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,831 2,202    
Equity Securities, U.S. Large-cap [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,831 2,202    
Equity Securities, U.S. Large-cap [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, U.S. Large-cap [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, International large-cap value[Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,480 2,177    
Equity Securities, International large-cap value[Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,480 2,177    
Equity Securities, International large-cap value[Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, International large-cap value[Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, U.S. Small-cap [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   209    
Equity Securities, U.S. Small-cap [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   209    
Equity Securities, U.S. Small-cap [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0    
Equity Securities, U.S. Small-cap [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0    
Equity Securities, Equity Index Funds [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 672 724    
Equity Securities, Equity Index Funds [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 672 724    
Equity Securities, Equity Index Funds [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, Equity Index Funds [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, Domestic Real Estate Funds [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 133 131    
Equity Securities, Domestic Real Estate Funds [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 133 131    
Equity Securities, Domestic Real Estate Funds [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, Domestic Real Estate Funds [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, Commodity Funds [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 439 523    
Equity Securities, Commodity Funds [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 439 523    
Equity Securities, Commodity Funds [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Equity Securities, Commodity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fixed Income Funds, Corporate Debt Instruments [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 7,126 33    
Fixed Income Funds, Corporate Debt Instruments [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2,426 0    
Fixed Income Funds, Corporate Debt Instruments [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 4,700 33    
Fixed Income Funds, Corporate Debt Instruments [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fixed Income Funds, Corporate Bonds [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   4,288    
Fixed Income Funds, Corporate Bonds [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   1,110    
Fixed Income Funds, Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   3,178    
Fixed Income Funds, Corporate Bonds [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0    
Fixed Income Funds, High Yield Bonds [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 331 679    
Fixed Income Funds, High Yield Bonds [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 331 679    
Fixed Income Funds, High Yield Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fixed Income Funds, High Yield Bonds [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Other Types of Investments, Multi-strategy hedge funds [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,217 1,184    
Other Types of Investments, Multi-strategy hedge funds [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Other Types of Investments, Multi-strategy hedge funds [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Other Types of Investments, Multi-strategy hedge funds [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,217 1,184 1,129 1,086
Private Equity Funds [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   9    
Private Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0    
Private Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0    
Private Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   9    
Other Types of Investments, Venture Capital Funds [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   1    
Other Types of Investments, Venture Capital Funds [Member] | Fair Value, Inputs, Level 1 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0    
Other Types of Investments, Venture Capital Funds [Member] | Fair Value, Inputs, Level 2 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0    
Other Types of Investments, Venture Capital Funds [Member] | Fair Value, Inputs, Level 3 [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 0 $ 1 $ 1 $ 1