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Goodwill and Other Intangible Assets -Schedule of Goodwill and Identified Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 24, 2023
Dec. 25, 2022
Sep. 24, 2023
Goodwill [Roll Forward]      
Goodwill, beginning of period $ 329,504 $ 329,504  
Allocated to sold operations (1,261) $ 0  
Goodwill, end of period 328,243    
Amortizable intangible assets:      
Total intangibles, net 418,627   $ 424,492
Customer and newspaper subscriber lists      
Amortizable intangible assets:      
Customer and newspaper subscriber lists 305,100   306,766
Less accumulated amortization (233,391)   (230,453)
Amortizable intangible assets, net 71,709   76,313
Mastheads      
Non-amortized intangible assets:      
Mastheads $ 18,675   $ 18,675