Note 6 - Leases (Details Textual) - USD ($)	Dec. 29, 2019	Sep. 30, 2019	Sep. 29, 2019
Operating Lease, Right-of-Use Asset	$ 10,125,000
Operating Lease, Liability, Current	2,341,000
Operating Lease, Liability, Noncurrent	$ 7,787,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months			3,403,000
Operating Leases, Future Minimum Payments, Due in Two Years			2,290,000
Operating Leases, Future Minimum Payments, Due in Three Years			2,238,000
Operating Leases, Future Minimum Payments, Due in Four Years			1,637,000
Operating Leases, Future Minimum Payments, Due in Five Years			1,367,000
Operating Leases, Future Minimum Payments, Due Thereafter			$ 4,991,000
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset		$ 10,709,000
Operating Lease, Liability, Current		2,281,000
Operating Lease, Liability, Noncurrent		$ 8,353,000