Note 6 - Leases - Lease Expense (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 29, 2020 USD ($)	Mar. 29, 2020 USD ($)
Operating lease costs	$ 1,742	$ 2,711
Variable lease costs	295	575
Short-term lease costs	266	319
Total Operating Lease Expense	2,303	3,605
Operating cash outflow from operating leases	$ 2,375	$ 3,266
Weighted average remaining lease term (years) (Year)	9 years 29 days	9 years 29 days
Weighted Average discount rate	8.27%	8.27%