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Long-Term Debt (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 27, 2014
Dec. 28, 2013
Debt Disclosure [Line Items]    
Senior secured revolving credit line $ 505,200 $ 568,600
Other Long-term Debt 292 318
Total debt 515,383 571,598
Less: Current maturities of long-term debt 8,831 1,408
Long-term debt 506,552 570,190
Foreign
   
Debt Disclosure [Line Items]    
Foreign loans $ 9,891 $ 2,680