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Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 25, 2016
Dec. 26, 2015
Jun. 27, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative Liability, Fair Value, Gross Liability $ 2,500    
Revolving credit loan   $ 150,000 $ 0
2016 Senior Credit Facility [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Unsecured Debt $ 197,500