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Revolving Credit Facilities (Narrative) (Details) - USD ($)
3 Months Ended
Jun. 24, 2017
Mar. 25, 2017
Jul. 12, 2016
Aug. 29, 2014
Line of Credit Facility [Line Items]        
Long-term line of credit, noncurrent $ 0 $ 60,000,000    
Wells Fargo Bank | Credit Agreement | Credit Facility        
Line of Credit Facility [Line Items]        
Line of credit facility maximum borrowing capacity       $ 250,000,000
Wells Fargo Bank | Amended Credit Agreement | Amended Facility        
Line of Credit Facility [Line Items]        
Line of credit facility maximum borrowing capacity     $ 300,000,000  
Covenant terms, leverage ratio requirement 300.00%      
Covenant terms fixed charge ratio requirement 125.00%      
Long-term line of credit, noncurrent $ 0      
Wells Fargo Bank | Amended Credit Agreement | Amended Facility | Minimum        
Line of Credit Facility [Line Items]        
Line of credit facility, unused capacity, commitment fee percentage 0.20%      
Wells Fargo Bank | Amended Credit Agreement | Amended Facility | Minimum | Base Rate        
Line of Credit Facility [Line Items]        
Basis spread on variable interest rate 0.00%      
Wells Fargo Bank | Amended Credit Agreement | Amended Facility | Minimum | London Interbank Offered Rate (LIBOR)        
Line of Credit Facility [Line Items]        
Basis spread on variable interest rate 1.25%      
Wells Fargo Bank | Amended Credit Agreement | Amended Facility | Maximum        
Line of Credit Facility [Line Items]        
Line of credit facility, unused capacity, commitment fee percentage 0.30%      
Wells Fargo Bank | Amended Credit Agreement | Amended Facility | Maximum | Base Rate        
Line of Credit Facility [Line Items]        
Basis spread on variable interest rate 0.50%      
Wells Fargo Bank | Amended Credit Agreement | Amended Facility | Maximum | London Interbank Offered Rate (LIBOR)        
Line of Credit Facility [Line Items]        
Basis spread on variable interest rate 2.00%