Note 3 - Investments (Details Textual) |
12 Months Ended | ||
|---|---|---|---|
|
Sep. 30, 2022
USD ($)
|
Sep. 30, 2021
USD ($)
|
Sep. 30, 2020
USD ($)
|
|
| Proceeds from Sale, Maturity and Collection of Investments, Total | $ 14,365,000 | $ 0 | $ 0 |
| debt Securities, Realized Gain | 92,000 | ||
| Debt Securities, Realized Loss | $ 53,000 | ||
| Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions | 62 | ||
| Debt Securities, Available for Sale, Other than Temporary Impairment | $ 0 | ||
| X | ||||||||||
- Definition Represents other than temporary impairment of debt securities available for sale. No definition available.
|
| X | ||||||||||
- Definition Amount of gain realized on sale of debt securities. No definition available.
|
| X | ||||||||||
- Definition Amount of loss realized on sale of debt securities. No definition available.
|
| X | ||||||||||
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|