Note 3 - Investments in Associated Companies - Summarized Financial Results (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 26, 2022	Jun. 27, 2021	Jun. 26, 2022	Jun. 27, 2021
Operating revenue	$ 195,037	$ 196,490	$ 587,333	$ 600,736
Operating expenses	189,648	184,396	563,219	562,631
Operating income	6,439	13,783	28,325	43,007
Equity in earnings	1,050	1,689	4,211	4,902
Restructuring costs	6,072	1,419	19,862	5,880
Depreciation and amortization	8,818	10,836	27,445	33,794
Net income	196	3,737	6,701	19,532
MNI [Member]
Net income	362	1,066	1,982	2,762
TNI Partners [Member]
Operating revenue	8,229	8,389	25,805	26,548
Operating expenses	6,492	6,077	19,365	19,506
Operating income	1,737	2,312	6,440	7,042
Company's 50% share of operating income	869	1,156	3,220	3,521
Equity in earnings	869	1,156	3,220	3,521
MNI [Member]
Operating revenue	11,921	11,479	35,677	34,425
Operating expenses	9,682	8,657	28,402	29,324
Operating income	1,950	2,634	6,646	4,515
Equity in earnings	181	533	991	1,381
Restructuring costs	122	0	122	106
Depreciation and amortization	$ 167	$ 188	$ 507	$ 480