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Debt - Maturities (Details) - USD ($)
$ in Thousands
Dec. 30, 2017
Dec. 31, 2016
Maturities of Long-term Debt [Abstract]    
2018 $ 16,659  
2019 8,617  
2020 457,519  
2021 107,432  
2022 32,906  
Thereafter 301,282  
Total Long-term debt 924,415 $ 781,380
Private Placement Facilities [Member]    
Maturities of Long-term Debt [Abstract]    
Total Long-term debt 535,295 $ 342,857
Debt Instrument [Line Items]    
Debt Issuance Costs, Gross $ 419