Note 13 - Leases - Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 26, 2022	Mar. 27, 2021	Mar. 26, 2022	Mar. 27, 2021
Operating cash flows from operating leases	$ 3,970	$ 4,001	$ 8,008	$ 7,987
Operating cash flows from finance leases	2	87	7	173
Financing cash flows from finance leases	37	11	111	25
Supplemental noncash information on lease liabilities arising from obtaining right-of-use assets	$ 5,922	$ 578	$ 7,065	$ 1,354