v3.10.0.1
Debt Components (Details) - USD ($)
$ in Thousands
Sep. 28, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Total Debt $ 1,142,009 $ 1,061,071
Less: current portion (6,385) (5,766)
Long-term debt 1,135,624 1,055,305
Senior unsecured notes [Member]    
Debt Instrument [Line Items]    
Total Debt 401,661 414,862
Term Debt [Member]    
Debt Instrument [Line Items]    
Total Debt 522,963 615,095
Revolving credit facilities and other [Member]    
Debt Instrument [Line Items]    
Total Debt $ 217,385 $ 31,114