Note 2 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 28, 2021	Mar. 29, 2020	Mar. 28, 2021	Mar. 29, 2020
Total operating revenue	$ 192,430	$ 121,367	$ 404,248	$ 243,710
Advertising and Marketing Services [Member]
Total operating revenue	85,575	60,945	188,204	126,672
Subscription and Circulation [Member]
Total operating revenue	89,777	46,943	181,080	89,113
Digital Services Revenues [Member]
Total operating revenue	4,820	4,905	9,966	9,889
Other Revenues [Member]
Total operating revenue	$ 12,258	$ 8,574	$ 24,998	$ 18,036