| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Interest Income: | ||||||||||||||||
| Interest and fees on loans | ||||||||||||||||
| Interest on investment securities | — | |||||||||||||||
| Other | ||||||||||||||||
| Total interest income | ||||||||||||||||
| Interest Expense: | ||||||||||||||||
| Interest on deposits | ||||||||||||||||
| Interest on borrowings | ||||||||||||||||
| Other | ||||||||||||||||
| Total interest expense | ||||||||||||||||
| Net interest income before provision for credit losses | ||||||||||||||||
| Provision for Credit Losses | ||||||||||||||||
| Net interest income after provision for credit losses | ||||||||||||||||
| Non-Interest Income: | ||||||||||||||||
| Interchange revenue | ||||||||||||||||
| Revenue | — | |||||||||||||||
| YoY growth | +4.1% | +11.3% | — | +6.5% | ||||||||||||
| Other | ||||||||||||||||
| Total non-interest income | ||||||||||||||||
| Non-Interest Expenses: | ||||||||||||||||
| Salaries and employee benefits | ||||||||||||||||
| Occupancy and equipment | ||||||||||||||||
| Other | ||||||||||||||||
| Total non-interest expenses | ||||||||||||||||
| Income before provision for income taxes | ||||||||||||||||
| Provision for Income Taxes | ||||||||||||||||
| Net income | ||||||||||||||||
| % of revenue | 1225.0% | 1243.7% | — | 630.6% | ||||||||||||
| Basic earnings per share (in dollars per share) | — | |||||||||||||||
| Diluted earnings per share (in dollars per share) | — |