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Quarterly Financial Data - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 28, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]        
Net proceeds from note offering   $ 0 $ 688,162 $ 0
Gains (Losses) on Extinguishment of Debt   0 (2,943) 0
Long-term debt   2,696,334 2,380,575  
Restructuring Charges Net of Tax Per Share Basic $ 0.13      
Gain on sale of investment   $ 0 $ 2,008 $ 18,269