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%

Amount of fees charged for providing the editorial content of the product.

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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Amount after accumulated amortization of finite-lived and indefinite-lived intangible assets classified as other.

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