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Note 4 - Investments in Associated Companies (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Sep. 27, 2020 | Sep. 29, 2019 | Sep. 30, 2018
Equity Method Investments | $ 27,624,000 | $ 28,742,000 |
Goodwill, Ending Balance | 328,445,000 | 250,309,000 | $ 246,176,000
MNI [Member] |  |  |
Proceeds from Equity Method Investment, Distribution | 1,300,000 | 3,350,000 | 3,400,000
Equity Method Investments | 12,600,000 |  |
Editorial Service Fees | 6,152,000 | 6,636,000 | 6,718,000
TNI Partners [Member] |  |  |
Proceeds from Equity Method Investment, Distribution | $ 3,176,000 | $ 4,245,000 | $ 5,814,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 50.00% |  |
Equity Method Investments | $ 15,069,000 |  |
Goodwill, Ending Balance | 12,366,000 |  |
Other Intangible Assets, Net | $ 3,090,000 |  |
MNI [Member] |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 50.00% |  |

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