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Fair Value Measurements (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 27, 2015
Dec. 28, 2014
Sep. 28, 2014
Sep. 27, 2015
Sep. 28, 2014
Dec. 28, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Proportionate share of loss, after tax and allocation to noncontrolling interest $ (170)   $ (1,599) $ 758 $ 523  
Carrying value of long-term debt 423,000 $ 420,000   423,000   $ 420,000
Long-term debt, fair value 520,000 527,000   520,000   527,000
Nonrecurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Impairment charge   9,200       9,216
Level 1 | Recurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Deferred compensation 34,330 45,136   34,330   45,136
Level 1 | Nonrecurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Investments in joint ventures   0       0
Level 2 | Recurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Deferred compensation 0 0   0   0
Level 2 | Nonrecurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Investments in joint ventures   0       0
Level 3 | Recurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Deferred compensation 0 0   0   0
Level 3 | Nonrecurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Investments in joint ventures   0       0
Fair Value | Recurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Deferred compensation $ 34,330 45,136   $ 34,330   45,136
Net Carrying Value | Nonrecurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Investments in joint ventures   0       $ 0
Madison Paper Industries            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Proportionate share of loss, after tax and allocation to noncontrolling interest   $ 4,700