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SHAREHOLDERS' EQUITY (Tables) | 12 Months Ended
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Sep. 30, 2025
Equity [Abstract] |
Schedule of Compliance with Regulatory Capital Requirements | As of September 30, 2025, and 2024, the Company and the Bank met all capital adequacy requirements to which they are subject, and the Bank's regulators categorized it as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Bank must maintain minimum Common Equity Tier 1, Tier 1 risk-based, Total risk-based and Tier 1 leverage ratios as set forth in the following table. The Bank's actual capital amounts and ratios as of these dates are also presented. There are no conditions or events since that management believes have changed the Bank's categorization.
| Actual | Capital Adequacy Guidelines | Categorized as Well Capitalized Under Prompt Corrective Action Provisions |
| Capital | Ratio |  | Ratio | Ratio
September 30, 2025 | ($ in thousands)
Common Equity Tier 1 risk-based capital ratio: |  |  |  |  |
The Company | $2,202,901 | 11.77% |  | 4.50% | NA
The Bank | 2,506,271 | 13.40 |  | 4.50 | 6.50%
Tier 1 risk-based capital ratio: |  |  |  |  |
The Company | 2,502,901 | 13.37 |  | 6.00 | NA
The Bank | 2,506,271 | 13.40 |  | 6.00 | 8.00
Total risk-based capital ratio: |  |  |  |  |
The Company | 2,770,166 | 14.80 |  | 8.00 | NA
The Bank | 2,721,890 | 14.55 |  | 8.00 | 10.00
Tier 1 leverage ratio: |  |  |  |  |
The Company | 2,502,901 | 9.59 |  | 4.00 | NA
The Bank | 2,506,271 | 9.61 |  | 4.00 | 5.00
September 30, 2024 |  |  |  |  |
Common Equity Tier 1 risk-based capital ratio: |  |  |  |  |
The Company | $2,153,721 | 11.31% |  | 4.50% | NA
The Bank | 2,463,266 | 12.94 |  | 4.50 | 6.50%
Tier 1 risk-based capital ratio: |  |  |  |  |
The Company | 2,453,721 | 12.88 |  | 6.00 | NA
The Bank | 2,463,266 | 12.94 |  | 6.00 | 8.00
Total risk-based capital ratio: |  |  |  |  |
The Company | 2,722,290 | 14.29 |  | 8.00 | NA
The Bank | 2,681,116 | 14.08 |  | 8.00 | 10.00
Tier 1 leverage ratio: |  |  |  |  |
The Company | 2,453,721 | 8.90 |  | 4.00 | NA
The Bank | 2,463,266 | 8.94 |  | 4.00 | 5.00
Schedule of Earnings Per Share Calculation | The following table sets forth information regarding earnings per common share calculations.
Year ended September 30, | 2025 |  | 2024 |  | 2023
Weighted average shares outstanding | 80,184,395 |  | 74,244,323 |  | 65,192,510
Weighted average dilutive options | 70,794 |  | 46,245 |  | 62,773
Weighted average diluted shares | 80,255,189 |  | 74,290,568 |  | 65,255,283
Net income available to common shareholders (in thousands) | $211,443 |  | $185,416 |  | $242,801
Basic EPS | $2.64 |  | $2.50 |  | $3.72
Diluted EPS | 2.63 |  | 2.50 |  | 3.72

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