Investment Securities (Tables)
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9 Months Ended |
Jun. 30, 2025 |
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| Investments, Debt and Equity Securities [Abstract] |
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| Schedule of Available-for-sale Securities Reconciliation |
Investments available for sale are summarized in the tables below. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2025 | | | | Amortized
Cost | | Gross
Unrealized | | Fair
Value | | | | Gains | | Losses | | | REMICs | | $ | 483,774 | | | $ | 2,212 | | | $ | (26,049) | | | $ | 459,937 | | | Fannie Mae certificates | | 2,658 | | | 85 | | | (4) | | | 2,739 | | | Freddie Mac certificates | | 8,477 | | | 82 | | | (26) | | | 8,533 | | | U.S. government and agency obligations | | 54,129 | | | — | | | (126) | | | 54,003 | | | Total | | $ | 549,038 | | | $ | 2,379 | | | $ | (26,205) | | | $ | 525,212 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2024 | | | | Amortized
Cost | | Gross
Unrealized | | Fair
Value | | | | Gains | | Losses | | | REMICs | | $ | 476,680 | | | $ | 1,202 | | | $ | (28,481) | | | $ | 449,401 | | | Fannie Mae certificates | | 2,810 | | | 137 | | | (2) | | | 2,945 | | | Freddie Mac certificates | | 1,138 | | | — | | | (9) | | | 1,129 | | | U.S. government and agency obligations | | 72,931 | | | 29 | | | (184) | | | 72,776 | | | Total | | $ | 553,559 | | | $ | 1,368 | | | $ | (28,676) | | | $ | 526,251 | |
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| Debt Securities, Available-for-sale |
The following is a summary of our securities portfolio by the period remaining until contractual maturity and by weighted average yield at June 30, 2025 and September 30, 2024. Maturities are based on the final contractual payment dates, and do not reflect the impact of prepayments or early redemptions that may occur. Weighted average yields are not presented on a tax-equivalent basis and are calculated by multiplying each carry value by its yield and dividing the sum of these results by the total carry values. We did not hold any tax-exempt securities at June 30, 2025 or September 30, 2024. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2025 | | September 30, 2024 | | Amortized Cost | | Fair Value | | Weighted Average Yield | | Amortized Cost | | Fair Value | | Weighted Average Yield | | Due in one year or less | $ | 50,205 | | | $ | 50,203 | | | 4.32 | % | | $ | 69,192 | | | $ | 69,219 | | | 5.25 | % | | Due after one to five years | 5,047 | | | 4,920 | | | 1.56 | | | 7,551 | | | 7,332 | | | 1.87 | | | Due after five to ten years | 36,839 | | | 36,375 | | | 3.76 | | | 27,639 | | | 27,162 | | | 3.22 | | | Ten years or greater | 456,947 | | | 433,714 | | | 3.42 | | | 449,177 | | | 422,538 | | | 3.16 | | | Total | $ | 549,038 | | | $ | 525,212 | | | 3.51 | % | | $ | 553,559 | | | $ | 526,251 | | | 3.40 | % |
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| Available-for-sale Securities |
Gross unrealized losses on available for sale securities and the estimated fair value of the related securities, aggregated by the length of time the securities have been in a continuous loss position, at June 30, 2025 and September 30, 2024, were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2025 | | Less Than 12 Months | | 12 Months or More | | Total | | Estimated Fair Value | | Unrealized Loss | | Estimated Fair Value | | Unrealized Loss | | Estimated Fair Value | | Unrealized Loss | | Available for sale— | | | | | | | | | | | | REMICs | $ | 1,941 | | | $ | 3 | | | $ | 281,429 | | | $ | 26,046 | | | $ | 283,370 | | | $ | 26,049 | | Fannie Mae certificates | — | | | — | | | 99 | | | 4 | | | 99 | | | 4 | | | Freddie Mac certificates | — | | | — | | | 1,108 | | | 26 | | | 1,108 | | | 26 | | U.S. government and agency obligations | 50,111 | | | 1 | | | 3,893 | | | 125 | | | 54,004 | | | 126 | | | Total | $ | 52,052 | | | $ | 4 | | | $ | 286,529 | | | $ | 26,201 | | | $ | 338,581 | | | $ | 26,205 | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2024 | | | | Less Than 12 Months | | 12 Months or More | | Total | | | | Estimated Fair Value | | Unrealized Loss | | Estimated Fair Value | | Unrealized Loss | | Estimated Fair Value | | Unrealized Loss | | | | Available for sale— | | | | | | | | | | | | | | REMICs | $ | 9,393 | | | $ | 9 | | | $ | 325,660 | | | $ | 28,472 | | | $ | 335,053 | | | $ | 28,481 | | | | Fannie Mae certificates | — | | | — | | | 101 | | | 2 | | | 101 | | | 2 | | | | | Freddie Mac certificates | — | | | — | | | 1,129 | | | 9 | | | 1,129 | | | 9 | | | | U.S. government and agency obligations | — | | | — | | | 3,844 | | | 184 | | | 3,844 | | | 184 | | | | | Total | $ | 9,393 | | | $ | 9 | | | $ | 330,734 | | | $ | 28,667 | | | $ | 340,127 | | | $ | 28,676 | | | |
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