Securities (Narrative) (Details) - USD ($) $ in Thousands |
9 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Sep. 30, 2025 |
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| Marketable Securities [Line Items] | |||
| AFS securities | $ 783,559 | $ 867,216 | |
| Non-taxable securities | 0 | $ 0 | |
| Residential MBS [Member] | |||
| Marketable Securities [Line Items] | |||
| AFS securities | 709,200 | 793,800 | |
| Commercial MBS [Member] | |||
| Marketable Securities [Line Items] | |||
| AFS securities | $ 70,500 | $ 69,700 | |
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- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of operating interest income, including amortization and accretion of premiums and discounts, on securities exempt from state, federal and other income tax. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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