Note 13 - Leases (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Operating Lease, Expense	$ 1.3	$ 1.6	$ 1.5
Operating Lease, Weighted Average Remaining Lease Term (Year)	2 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	4.40%