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Divestiture (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 25, 2015
Sep. 26, 2014
Sep. 25, 2015
Sep. 26, 2014
Apr. 30, 2015
Liquid Finishing Divestiture [Abstract]          
Sale consideration held separate investment         $ 610,000
Gain on sale of held separate investment $ 2,000   $ 149,003 $ 0  
After-tax gain and dividends     141,000    
Investment income, dividend $ 0 $ 9,000 $ 42,000 $ 24,000