Note 7 - Receivables from Broker Dealers and Clearing Organizations and Other Receivables - Other Receivables (Details) - USD ($)	Sep. 30, 2020	Sep. 30, 2019
Trailing fees	$ 1,391,000	$ 947,000
Accounts receivable for tax and accounting services	1,009,000	686,000
Allowance for doubtful accounts - tax and accounting services	(347,000)	(282,000)
Advances to registered representatives	1,834,000	1,383,000
Investment banking receivable	2,383,000	411,000
Advisory fees	771,000	483,000
Notes receivable (Note 4)	1,229,000	665,000
Other	4,124,000	1,379,000
Total	$ 12,394,000	$ 5,672,000