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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 28, 2019
Dec. 29, 2018
Assets:    
Property, plant and equipment, accumulated depreciation $ 1,370,145 $ 1,246,095
Intangible assets, accumulated amortization $ 459,996 $ 423,575
Stockholders’ equity:    
Common stock, par value (in usd per share) $ 0.01 $ 0.01
Common stock, shares authorized 250,000,000 250,000,000
Common stock, shares issued 168,433,009 168,098,177
Treasury stock, shares 4,314,935 3,437,579