Note 12 - Income Taxes - Income Taxes (Details) - USD ($)	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Current income tax expense, federal	$ 275,000	$ 424,000
Current income tax expense, state	765,000	263,000
Current income tax expense	1,040,000	687,000
Deferred income tax benefit, federal	(2,172,000)	(145,000)
Deferred income tax benefit, state	(733,000)	(223,000)
Deferred income tax benefit	(2,905,000)	(368,000)
Total income tax expense, federal	(1,897,000)	279,000
Total income tax expense, state	32,000	40,000
Total income tax expense	(1,865,000)	319,000
Deferred income tax expense (benefit)	$ (2,905,000)	$ (368,000)