v3.25.4

Derivative Instruments (Tables) | 3 Months Ended
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Dec. 31, 2025
Summary of Derivative Instruments [Abstract] |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value | The following tables provide the locations within the CONSOLIDATED STATEMENTS OF CONDITION for fair values of derivative instruments at the reporting dates and their related notional values.
|  | December 31, 2025 |  | September 30, 2025
|  |  |  | Weighted Average |  |  |  | Weighted Average
|  | Notional Value |  | Term (years) |  | Fixed-Rate Payments |  | Notional Value |  | Term (years) |  | Fixed-Rate Payments
Derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |
Cash flow hedges: Interest rate swaps |  |  |  |  |  |  |  |  |  |  |  |
Other Assets |  | $ | 1,475,000 |  |  | 2.4 |  | 2.89 | % |  | $ | 1,675,000 |  |  | 2.2 |  | 2.95 | %
Other Liabilities |  | 2,025,000 |  |  | 2.9 |  | 3.64 |  |  | 1,900,000 |  |  | 3.2 |  | 3.66 |
Total cash flow hedges: Interest rate swaps |  | $ | 3,500,000 |  |  | 2.7 |  | 3.32 | % |  | $ | 3,575,000 |  |  | 2.7 |  | 3.32 | %
|  | December 31, 2025 |  | September 30, 2025
|  | Notional Value |  | Fair Value |  | Notional Value |  | Fair Value
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |
Interest rate lock commitments |  |  |  |  |  |  |  |
Other Assets |  | $ | — |  |  | $ | — |  |  | $ | 11,500 |  |  | $ | 272 |
Forward Commitments for the sale of mortgage loans |  |  |  |  |  |  |  |
Other Liabilities |  | 11,298 |  |  | (63) |  |  | 59,340 |  |  | (351) |
Total derivatives not designated as hedging instruments |  | $ | 11,298 |  |  | $ | (63) |  |  | $ | 70,840 |  |  | $ | (79) |
Schedule of Effect of Derivative Instruments, Gain (Loss) in Statement of Financial Performance | The following tables present the net gains and losses recorded within the CONSOLIDATED STATEMENTS OF INCOME and the CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME relating to derivative instruments.
|  |  |  |  | Three Months Ended
| Location of Gain or (Loss) |  |  |  | December 31,
| Recognized in Income |  |  |  |  |  | 2025 |  | 2024
Cash flow hedges |  |  |  |  |  |  |  |  |
Amount of gain/(loss) recognized | Other comprehensive income |  |  |  |  |  | $ | 4,090 |  |  | $ | 76,967 |
Amount of gain reclassified from AOCI | Interest expense: Borrowed funds and Deposits |  |  |  |  |  | 6,581 |  |  | 14,812 |
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |  |
Interest rate lock commitments | Other non-interest income |  |  |  |  |  | $ | (272) |  |  | $ | (369) |
Forward commitments for the sale of mortgage loans | Net gain/(loss) on the sale of loans |  |  |  |  |  | 288 |  |  | 70 |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 182 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-182 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B + Details
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