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BORROWINGS (Tables) | 12 Months Ended
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Sep. 30, 2025
Debt Disclosure [Abstract] |
Schedule of Maturity dates of Outstanding FHLB Advances | The table below shows the contractual maturity dates of outstanding FHLB advances.
| September 30, 2025 | September 30, 2024
| (In thousands)
Within 1 year | $1,747,041 | $2,099,353
1 to 3 years | — | 93,354
3 to 5 years | 18,563 | 167
| $1,765,604 | $2,192,874
Schedule of Weighted Average Cost and Amount of Advances | Financial information pertaining to the weighted-average cost and the amount of FHLB advances were as follows.
| 2025 | 2024 | 2023
| ($ in thousands)
Weighted average interest rate, including cash flow hedges, at end of year | 2.35% | 3.32% | 3.83%
Weighted daily average interest rate, including cash flow hedges, during the year | 3.09% | 3.78% | 3.42%
Daily average of FHLB advances during the year | $2,260,209 | $2,952,872 | $2,916,849
Maximum amount of FHLB advances at any month end | $2,913,373 | $4,338,731 | $3,425,000
Interest expense during the year (including swap interest income and expense) | $69,912 | $111,574 | $99,631

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