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Employee Benefits (Detail Textuals 3) (USD $)
 12 Months Ended
Jan. 04, 2014
Dec. 29, 2012
Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]      
Decrease in the unfunded obligation $ 18,700,000    
Actuarial gain (loss) 10,710,000 (12,183,000)  
Actual return on plan assets 13,536,000 6,758,000  
Amount of decrease to liability related to freeze of our non union pension plan 900,000    
Amount of increase in the liability 6,900,000    
Employer contributions 472,000 1,147,000  
Discount rate on projected benefit obligation 5.00% 4.24%  
Change in the discount rate 0.25%    
Revised discount rate 5.25%    
Reduction in projected benefit obligation due to change in discount rate 3,100,000    
Discount rate on net periodic pension cost 4.24% 5.02% 5.02%
Net periodic pension costs 4,600,000 3,900,000  
Average rate of increase in future compensation levels   3.00%  
Change in estimated rate of future compensation increases 0.25%    
Revised estimated rate of future compensation increases 2.50%    
Increase in projected benefit obligation due to change in estimated rate of future compensation 100,000    
Recognized net gain (loss) due to curtailments $ 900,000    
Minimum
      
Defined Benefit Plan Disclosure [Line Items]      
Average rate of increase in future compensation levels 2.50%    
Revised estimated rate of future compensation increases 2.75%    
Maximum
      
Defined Benefit Plan Disclosure [Line Items]      
Average rate of increase in future compensation levels 5.50%    
Revised estimated rate of future compensation increases 5.75%