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Employee Benefits (Detail Textuals 3) (USD $)
 12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Employee Benefits [Abstract]    
Increase in the unfunded obligation $ 11,000,000  
Defined benefit plan liability 6,700,000  
Actuarial loss 12,183,000 9,029,000
Actual (loss) return on plan assets 6,758,000 (1,015,000)
Employer contributions 1,147,000   
Discount rate on projected benefit obligation 4.24% 5.02%
Change in the discount rate 0.25%  
Revised discount rate 4.49%  
Reduction in projected benefit obligation due to change in discount rate 3,700,000  
Discount rate on net periodic pension cost 5.02% 5.39%
Net periodic pension costs 3,900,000 1,800,000
Plan's expected return on plan assets 7.85% 8.25%
Estimated rate of future compensation increases 3.00% 3.00%
Change in estimated rate of future compensation increases 0.25%  
Revised estimated rate of future compensation increases 3.25%  
Increase in projected benefit obligation due to change in estimated rate of future compensation $ 200,000