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Goodwill and Other Intangible Assets -Schedule of Goodwill and Identified Intangible Assets (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 30, 2025 | Sep. 29, 2024
Goodwill [Roll Forward] |  |
Goodwill, beginning of period | $ 328,040 | $ 329,504
Allocated to sold operations | (4,182) | (1,464)
Goodwill, end of period | 323,858 | 328,040
Amortizable intangible assets: |  |
Total intangibles, net | 386,989 | 398,115
Customer and newspaper subscriber lists |  |
Amortizable intangible assets: |  |
Customer and newspaper subscriber lists | 262,146 | 262,242
Less accumulated amortization | (209,932) | (203,084)
Amortizable intangible assets, net | 52,214 | 59,158
Mastheads |  |
Non-amortized intangible assets: |  |
Mastheads | $ 10,917 | $ 10,917

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