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Debt Components (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Total Debt $ 1,385,140 $ 1,417,547
Less: current portion (6,082) (5,792)
Long-term debt 1,379,058 1,411,755
Term loans [Member]    
Debt Instrument [Line Items]    
Total Debt 687,012 713,175
Trade receivables financing arrangement [Member]    
Debt Instrument [Line Items]    
Total Debt 76,643 75,800
Revolving credit facilities and other [Member]    
Debt Instrument [Line Items]    
Total Debt $ 621,485 $ 628,572