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U.S Multi-Employer Defined Benefit Plan (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Multiemployer Plans [Line Items]      
EIN Number 916145047    
Pension Plan Number 1    
Pension Protection Act Zone Status Green Green  
Contributions $ 779 $ 779 $ 685
Expiration Collective Bargaining Agreement Sep. 15, 2014