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Number of shares authorized to be purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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Aggregate number of common shares reserved for future issuance.

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Amount of realized and unrealized gain (loss) on investment.

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A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Note 1 - Organization and Description of Business and Significant Accounting Policies (Details Textual) $ in Thousands			12 Months Ended
	Feb. 23, 2024 USD ($)	Nov. 10, 2023 USD ($)	Sep. 30, 2024 USD ($) shares	Sep. 30, 2023 shares	Aug. 31, 2022 shares	Aug. 31, 2010 shares
Management Contracts Impairment Amount \| $			$ 0
Increase (Decrease) in Assets Under Management \| $	$ 59,000	$ 12,000
Capitalized Contract Cost, Net \| $			$ 1,000
Stock Buyback Program [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)					2,000,000	1,500,000
Share Repurchase Program, Remaining Shares Authorized, Number of Shares (in shares)					1,096,368
The Omnibus Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			4 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Change of Control Provision, Ownership Percentage			50.00%
Share Based Compensation Arrangement By Share Based Payment Award, Change of Control Provisions, Percentage of Members of Board of Directors			50.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)			3,671,300
The Omnibus Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			4 years
The Omnibus Plan [Member] \| Restricted Stock Units (RSUs) [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage			25.00%
Dividend Reinvestment and Stock Purchase Plan (DRSPP) [Member]
Stock Issued During Period, Shares, Dividend Reinvestment Plan (in shares)			12,902
Stock Issued During Period, Shares, New Issues (in shares)				9,535
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)			1,530,000
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			1,520,968
Maximum [Member]
Gain (Loss) on Investments \| $			$ 1,000
Employee Retention Credit [Member]
Income Tax Credits and Adjustments \| $			$ 300
Open-end Mutual Funds [Member]
Number of Funds			16
Exchange-traded Fund [Member]
Number of Funds			1