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Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Oct. 01, 2017
Jan. 01, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, Current $ 7,600 $ 7,613
Bank indebtedness and other long-term debt, less current portion 965,976 968,266
Long-term portion (2) 995,534 1,000,934
debt, net of unamortized issue discount 986,571 991,878
Carrying Amount [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Bank indebtedness and other long-term debt, less current portion [1] 978,971 984,265
Short-term Debt [Member] | Estimate of Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term portion (2) 7,562 7,623
Long-term Debt [Member] | Estimate of Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term portion (2) $ 987,972 $ 993,311
[1] Excluding net deferred financing costs