Note 5 - Goodwill - Changes to Carrying Amount of Goodwill (Details) - USD ($)	12 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Balance	$ 5,153,000	$ 5,153,000
Impairment	(724,000)	0
Reduction related to sale of National Tax branches	(239,000)
Balance	11,673,000	5,153,000
Winslow Targets [Member]
Goodwill related to acquisition	2,680,000
United Advisor Acquisition [Member]
Goodwill related to acquisition	4,803,000
Brokerage and Advisory Services [Member]
Balance	4,451,000	4,451,000
Impairment	(724,000)
Reduction related to sale of National Tax branches	(164,000)
Balance	11,046,000	4,451,000
Brokerage and Advisory Services [Member] \| Winslow Targets [Member]
Goodwill related to acquisition	2,680,000
Brokerage and Advisory Services [Member] \| United Advisor Acquisition [Member]
Goodwill related to acquisition	4,803,000
Tax and Accounting Services [Member]
Balance	702,000	702,000
Impairment
Reduction related to sale of National Tax branches	(75,000)
Balance	627,000	$ 702,000
Tax and Accounting Services [Member] \| Winslow Targets [Member]
Goodwill related to acquisition
Tax and Accounting Services [Member] \| United Advisor Acquisition [Member]
Goodwill related to acquisition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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