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Investments in Associated Companies - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 25, 2022 | Sep. 26, 2021 | Sep. 27, 2020 | Mar. 16, 2020
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investments | $ 27,378 | $ 26,682 |  |
Goodwill | 329,504 | 330,204 | $ 328,445 | $ 79,896
Editorial service costs | 344,905 | 325,597 | 259,382 |
TNI Partners |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Distributions from equity method investments | $ 3,831 | 5,150 | 3,176 |
Equity method investments, ownership percentage | 50.00% |  |  |
Equity method investments | $ 15,345 | 14,702 |  |
Goodwill | 12,366 |  |  |
Other intangible assets | 2,336 |  |  |
TNI Partners | Editorial Services |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Editorial service costs | 5,164 | 4,520 | 4,904 |
MNI |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Distributions from equity method investments | $ 1,250 | $ 2,300 | 1,300 |
Equity method investments, ownership percentage | 50.00% | 50.00% |  |
Equity method investments | $ 12,033 | $ 11,980 |  |
Editorial service fees | $ 5,607 | $ 5,562 | $ 6,152 |

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