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Schedule II Valuation and Qualifying Accounts (Details) - Allowance for Doubtful Accounts [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 25, 2016
Dec. 27, 2015
Dec. 28, 2014
Valuation and Qualifying Accounts [Roll Forward]      
Balance at Beginning of Year $ 14,900 $ 15,900 $ 19,000
Expense (Benefit) 19,500 2,400 800
Other Additions 0 0 0
Write-Offs and Other (17,600) (3,400) (3,900)
Balance at End of Year $ 16,800 $ 14,900 $ 15,900