Note 13 - Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 26, 2022	Mar. 27, 2021	Mar. 26, 2022	Mar. 27, 2021
Operating lease cost in cost of goods sold and operating expenses	$ 3,922	$ 3,962	$ 7,920	$ 7,901
Amortization of assets in cost of goods sold and operating expenses	50	78	122	154
Interest on lease liabilities in Interest expense & other	2	11	7	25
Total finance lease cost	52	89	129	179
Short-term lease cost in cost of goods sold and operating expenses	0	0	0	0
Total net lease cost	$ 3,974	$ 4,051	$ 8,049	$ 8,080