| 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 | ||||||||||||||||
| Debt securities | — | — | — | |||||||||||||
| Federal funds sold and securities purchased with agreement to resell | ||||||||||||||||
| Other interest and dividends | ||||||||||||||||
| Total interest income | ||||||||||||||||
| Interest expense: | ||||||||||||||||
| Deposits | ||||||||||||||||
| Borrowed funds | ||||||||||||||||
| Total interest expense | ||||||||||||||||
| Net interest income | ||||||||||||||||
| Provision for credit losses | ||||||||||||||||
| Net interest income after provision for credit losses | ||||||||||||||||
| Noninterest income: | ||||||||||||||||
| Securities losses | — | |||||||||||||||
| Bank-owned life insurance income | ||||||||||||||||
| Other operating income | ||||||||||||||||
| Total noninterest income | ||||||||||||||||
| Noninterest expenses: | ||||||||||||||||
| Salaries and employee benefits | ||||||||||||||||
| Equipment and occupancy expense | ||||||||||||||||
| Third party processing and other services | ||||||||||||||||
| Professional services | ||||||||||||||||
| FDIC and other regulatory assessments | ||||||||||||||||
| Other real estate owned expense | ||||||||||||||||
| Other operating expenses | ||||||||||||||||
| Total noninterest expenses | ||||||||||||||||
| Income before income taxes | ||||||||||||||||
| Provision for income taxes | ||||||||||||||||
| Net income | ||||||||||||||||
| Dividends on preferred stock | ||||||||||||||||
| Net income available to common stockholders | ||||||||||||||||
| Basic earnings per common share (in dollars per share) | — | |||||||||||||||
| Diluted earnings per common share (in dollars per share) | — |