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SUPPLEMENTAL BALANCE SHEET INFORMATION Composition of Other Long-Term Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 26, 2015
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Supplemental Balance Sheet Information [Abstract] |  |
Long-term pension liability | $ 89,984 | $ 34,604
Accrued executive supplemental life insurance retirement plan and deferred compensation plan | 32,880 | 30,188
Other | 36,375 | 24,270
Other long-term liabilities | $ 159,239 | $ 89,062

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