Note 11 - Employee Benefit Plans - Net Periodic Pension Costs and Related Components (Details) - Supplemental Employee Retirement Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Service cost	$ 312	$ 338	$ 297
Interest cost	316	334	384
Amortization of net loss	215	294	140
Net periodic pension cost	$ 843	$ 966	$ 821