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Goodwill and other Intangible Assets Schedule of Intangible Assets (Details) - USD ($)
Dec. 24, 2017
Sep. 24, 2017
Schedule of Intangible Assets [Line Items]    
Mastheads $ 22,035,000 $ 22,035,000
Other intangible assets, net 132,016,000 136,302,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 17,192,000  
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Two 16,163,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 15,702,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 13,800,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Five 12,258,000  
Customer Lists [Member]    
Schedule of Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 692,004,000 691,994,000
Finite-Lived Intangible Assets, Accumulated Amortization 582,023,000 577,727,000
Finite-Lived Intangible Assets, Net 109,981,000 114,267,000
Noncompete Agreements [Member]    
Schedule of Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 28,524,000 28,524,000
Finite-Lived Intangible Assets, Accumulated Amortization 28,524,000 28,524,000
Finite-Lived Intangible Assets, Net $ 0 $ 0