Note 14 - Income Taxes - Summary of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Federal	$ 0	$ 0
State	1	2
Total current tax provision	1	2
Federal	368	(4,852)
State	65	(856)
Total deferred provision	433	(5,708)
Provision (benefit) for income taxes	$ 434	$ (5,706)