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Senior Credit Facility - Credit Agreement (Details) - USD ($)
 4 Months Ended
Jun. 25, 2016
Dec. 26, 2015
Jun. 27, 2015
Jun. 25, 2016
Feb. 19, 2016
Line of Credit Facility [Line Items]          
Senior credit facility, maximum borrowing capacity $ 500,000,000     $ 500,000,000  
Swingline Loan, Maximum Borrowing Capacity 50,000,000        
Debt Issuance Costs, Gross 1,300,000     1,300,000  
Term Loan, Maximum Borrowing Capacity $ 200,000,000     200,000,000  
Debt Instrument, Maturity Date Feb. 19, 2021        
Letters of Credit Outstanding, Amount $ 50,500,000 $ 48,700,000 $ 57,400,000 $ 50,500,000  
Debt instrument, basis spread on variable rate 0.625%        
Commitment fee for unused capacity 0.10%        
Base Rate          
Line of Credit Facility [Line Items]          
Line of Credit Facility, Interest Rate Description 0.0350        
London Interbank Offered Rate (LIBOR)          
Line of Credit Facility [Line Items]          
Line of Credit Facility, Interest Rate Description .004493        
Minimum          
Line of Credit Facility [Line Items]          
Debt instrument, basis spread on variable rate       0.50%  
Commitment fee for unused capacity       0.075%  
Maximum          
Line of Credit Facility [Line Items]          
Debt instrument, basis spread on variable rate       1.125%  
Commitment fee for unused capacity       0.20%  
Senior credit facility [Member]          
Line of Credit Facility [Line Items]          
Senior credit facility, maximum borrowing capacity         $ 400,000,000
Swingline loan [Member]          
Line of Credit Facility [Line Items]          
Swing loan maximum borrowing capacity         $ 30,000,000
2016 Senior Credit Facility [Member]          
Line of Credit Facility [Line Items]          
Term loan, Maximum Month End Outstanding Amount $ 198,000,000     $ 198,000,000  
Number of Financial Covenants [Member]          
Line of Credit Facility [Line Items]          
Debt Instrument, Covenant Description       2  
2011 Senior Credit Facility [Member]          
Line of Credit Facility [Line Items]          
Line of Credit Facility, Maximum Month-end Outstanding Amount   $ 150,000,000 $ 0    
2016 Senior Credit Facility [Member]          
Line of Credit Facility [Line Items]          
Line of Credit Facility, Maximum Month-end Outstanding Amount 0        
Unsecured Debt 197,500,000     $ 197,500,000  
Compensating Balance, Amount $ 0     $ 0  
Debt Instrument, Covenant Compliance all        
Due in years one and two [Member]          
Line of Credit Facility [Line Items]          
Debt Instrument, Frequency of Periodic Payment       10  
Due in years three through five [Member]          
Line of Credit Facility [Line Items]          
Debt Instrument, Frequency of Periodic Payment       20  
Fixed Charge Coverage Ratio Minimum Requirement [Member]          
Line of Credit Facility [Line Items]          
Debt Instrument, Covenant Description 2.00        
Leverage Ratio Maximum Requirement [Member]          
Line of Credit Facility [Line Items]          
Debt Instrument, Covenant Description 4.00