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Fair Value Measurements (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 25, 2016
Sep. 25, 2016
Jun. 26, 2016
Mar. 27, 2016
Dec. 27, 2015
Sep. 27, 2015
Jun. 28, 2015
Mar. 29, 2015
Dec. 28, 2014
Dec. 25, 2016
Dec. 27, 2015
Dec. 28, 2014
Dec. 29, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Loss from joint ventures $ 5,572 $ 463 $ (412) $ (41,896) $ (25) $ 170 $ (356) $ (572)   $ (36,273) $ (783) $ (8,368)  
Carrying value of long-term debt 240,000       236,000         240,000 236,000    
Long-term debt, fair value 298,000       316,000         298,000 316,000    
Nonrecurring [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Impairment charge                     0 9,216  
Level 1 [Member] | Recurring [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Deferred compensation 31,006       35,578         31,006 35,578    
Level 1 [Member] | Nonrecurring [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Investments in joint ventures                 $ 0     0  
Level 2 [Member] | Recurring [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Deferred compensation 0       0         0 0    
Level 2 [Member] | Nonrecurring [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Investments in joint ventures                 0     0  
Level 3 [Member] | Recurring [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Deferred compensation 0       0         0 0    
Level 3 [Member] | Nonrecurring [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Investments in joint ventures                 0     0  
Estimate of Fair Value Measurement [Member] | Recurring [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Deferred compensation $ 31,006       $ 35,578         $ 31,006 $ 35,578    
Net Carrying Value [Member] | Nonrecurring [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Investments in joint ventures                         $ 0
Madison Paper Industries [Member]                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Impairment charge                       9,200  
Loss from joint ventures       $ (41,400)         9,200     $ (4,700)  
Loss from joint ventures after tax and adjusted for allocation of loss to noncontrolling interest                 $ 4,700