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Note 3 - Investments in Associated Companies - Summarized Financial Results (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 28, 2020
Jun. 30, 2019
Jun. 28, 2020
Jun. 30, 2019
Revenue from Contract with Customer, Including Assessed Tax $ 182,528 $ 127,284 $ 426,238 $ 386,189
Operating expenses 171,621 108,704 386,168 331,169
Operating income 11,749 20,031 43,843 60,318
Equity in earnings 842 1,451 3,773 5,298
Restructuring Charges, Total 2,865 2,792 6,422 5,612
Depreciation and amortization 11,201 7,347 25,196 22,263
Net income (727) 6,172 2 14,564
TNI Partners [Member]        
Operating income 789 1,051 3,013 3,909
Less amortization of intangible assets 0 105 209 313
Equity in earnings 789 946 2,804 3,596
TNI Partners [Member]        
Revenue from Contract with Customer, Including Assessed Tax 8,222 10,465 28,602 34,109
Operating expenses 6,645 8,363 22,576 26,291
Operating income 1,577 2,102 6,026 7,818
Madison Newspapers, Inc. [Member]        
Revenue from Contract with Customer, Including Assessed Tax 10,875 13,709 37,125 41,627
Operating expenses 10,542 12,132 34,222 36,338
Operating income 161 1,230 2,389 4,316
Equity in earnings 54 505 969 1,702
Restructuring Charges, Total 0 67 0 134
Depreciation and amortization 172 280 514 839
Net income $ 107 $ 1,010 $ 1,938 $ 3,405