Note 15 - Leases (Details Textual)	3 Months Ended	6 Months Ended
	Mar. 28, 2020 USD ($)	Mar. 28, 2020 USD ($)
Operating Lease, Expense	$ 337,000	$ 664,000
Operating Lease, Weighted Average Remaining Lease Term (Year)	2 years 146 days	2 years 146 days
Operating Lease, Weighted Average Discount Rate, Percent	5.10%	5.10%