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Employee Benefits (Detail Textuals) (USD $)
 12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Employee Benefits [Abstract]      
Contribution to union administered multiemployer pension plans $ 1,300,000 $ 1,200,000 $ 1,100,000
Unfunded status of plan (46,570,000) (35,529,000)  
Net adjustment to other comprehensive loss (8,200,000) (15,000,000) (1,000,000)
Net adjustment to other comprehensive loss net of tax (8,200,000) (15,000,000) (600,000)
Estimated net loss expected to be amortized from accumulated other comprehensive loss into net periodic cost over the next fiscal year 2,900,000    
Accumulated benefit obligation for the hourly pension plan 111,100,000 96,800,000  
Contributions to the hourly defined contribution plan 100,000 100,000 100,000
Contributions to the salaried defined contribution plan $ 1,000,000