Note 4 - Investments in Associated Companies (Details Textual) - USD ($)	12 Months Ended
Sep. 26, 2021	Sep. 27, 2020	Sep. 29, 2019	Mar. 16, 2020
Equity Method Investments	$ 26,682,000	$ 27,624,000
Goodwill, Ending Balance	330,204,000	328,445,000	$ 250,309,000	$ 79,896,000
MNI [Member]
Proceeds from Equity Method Investment, Distribution	2,300,000	1,300,000	3,350,000
Editorial Service Fees	5,562,000	6,152,000	6,636,000
TNI Partners [Member]
Proceeds from Equity Method Investment, Distribution	$ 5,150,000	$ 3,176,000	$ 4,245,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	50.00%	50.00%
Equity Method Investments	$ 14,702,000
Goodwill, Ending Balance		$ 12,366,000
Other Intangible Assets, Net		$ 2,336,000
MNI [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	50.00%	50.00%
Equity Method Investments	$ 11,980,000

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