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Employee Retirement Plans - Additional Information (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]      
Number of defined contribution 401K savings plans 2    
Smithville Plan [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Expected contributions to the pension plan .9    
Wrexham Plan [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Expected contributions to the pension plan .5    
Maximum [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Contributions by employer to 401K savings plan $ 0.1 $ 0.1 $ 0.1