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Debt - Long-term Debt (Details) - USD ($)
$ in Thousands
Jul. 01, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Long-term debt and capital lease obligations including current maturities $ 824,866 $ 781,380
Less current maturities (17,241) (65,923)
Total long-term debt 807,625 715,457
Private Placement Facilities [Member]    
Debt Instrument [Line Items]    
Long-term debt and capital lease obligations including current maturities 435,714 342,857
U S Trade Accounts Receivable Securitization [Member]    
Debt Instrument [Line Items]    
Long-term debt and capital lease obligations including current maturities 349,560 350,000
Notes Payable to Banks [Member]    
Debt Instrument [Line Items]    
Long-term debt and capital lease obligations including current maturities 0 $ 47,957
Long-term Debt, Weighted Average Interest Rate   21.37%
Loans Payable [Member]    
Debt Instrument [Line Items]    
Long-term debt and capital lease obligations including current maturities $ 34,076 $ 35,150
Loans Payable [Member] | Minimum [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 2.56% 2.56%
Loans Payable [Member] | Maximum [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 12.90% 12.90%
Capital Lease Obligations [Member]    
Debt Instrument [Line Items]    
Long-term debt and capital lease obligations including current maturities $ 5,516 $ 5,416
Capital Lease Obligations [Member] | Minimum [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 0.84% 1.38%
Capital Lease Obligations [Member] | Maximum [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 19.79% 19.15%