Note 10 - Fixed Assets - Fixed Assets (Details) - USD ($)	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Fixed assets, gross	$ 7,486,000	$ 7,165,000
Less accumulated depreciation and amortization	(3,104,000)	(2,098,000)
Fixed assets - net	4,382,000	5,067,000
Equipment [Member]
Fixed assets, gross	$ 1,989,000	1,835,000
Equipment [Member] | Minimum [Member]
Estimated useful lives (Year)	3 years
Equipment [Member] | Maximum [Member]
Estimated useful lives (Year)	7 years
Furniture and Fixtures [Member]
Fixed assets, gross	$ 892,000	761,000
Estimated useful lives (Year)	5 years
Construction in Progress [Member]
Fixed assets, gross	$ 21,000
Leasehold Improvements [Member]
Fixed assets, gross	3,677,000	3,662,000
Finance Leases [Member]
Fixed assets, gross	$ 907,000	$ 907,000
Finance Leases [Member] | Minimum [Member]
Estimated useful lives (Year)	3 years
Finance Leases [Member] | Maximum [Member]
Estimated useful lives (Year)	7 years