Note 13 - Leases (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Oct. 01, 2019
Increase in Lease Liability with 10% Increase in Index	$ 19
Operating Lease, Liability	6,608	$ 7,166
Operating Lease, Right-of-Use Asset	$ 4,862	5,285
Operating Lease, Weighted Average Remaining Lease Term (Year)	6 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	4.10%
Operating Lease, Expense	$ 991	902
Short-term Lease, Cost	3	$ 0
Assets Acquisition of Amika Mobile Corporation [Member]
Operating Lease, Liability	259
Operating Lease, Right-of-Use Asset	$ 259
Accounting Standards Update 2016-02 [Member]
Operating Lease, Liability			$ 7,815
Operating Lease, Right-of-Use Asset			$ 5,824