| Line Item | Jun 30, 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 and fees on loans | |||||||||||||||
| Interest and dividends on investment securities: | |||||||||||||||
| Taxable | |||||||||||||||
| Tax-exempt | |||||||||||||||
| Dividends | |||||||||||||||
| Interest on federal funds sold and other short-term investments | |||||||||||||||
| Total interest income | |||||||||||||||
| Interest expense | |||||||||||||||
| Deposits | |||||||||||||||
| Borrowings | |||||||||||||||
| Total interest expense | |||||||||||||||
| Net interest income | |||||||||||||||
| Provision for credit losses | |||||||||||||||
| Net interest income after provision for credit losses | |||||||||||||||
| Noninterest income | |||||||||||||||
| Deposit, loan and other income | |||||||||||||||
| Income on bank owned life insurance | |||||||||||||||
| Net gains on sale of loans held-for-sale | |||||||||||||||
| Net gains (losses) on equity securities | |||||||||||||||
| Total noninterest income | |||||||||||||||
| Noninterest expenses | |||||||||||||||
| Salaries and employee benefits | |||||||||||||||
| Occupancy and equipment | |||||||||||||||
| FDIC insurance | |||||||||||||||
| Professional and consulting | |||||||||||||||
| Marketing and advertising | |||||||||||||||
| Information technology and communications | |||||||||||||||
| Merger expenses and restructuring charges | |||||||||||||||
| Bank owned life insurance restructuring charge | |||||||||||||||
| Amortization of core deposit intangibles | |||||||||||||||
| Other expenses | |||||||||||||||
| Total noninterest expenses | |||||||||||||||
| Income (loss) before income tax expense | |||||||||||||||
| Income tax expense (benefit) | |||||||||||||||
| Net income (loss) | |||||||||||||||
| Preferred dividends | |||||||||||||||
| Net income (loss) available to common stockholders | |||||||||||||||
| Basic (in dollars per share) | — | ||||||||||||||
| Diluted (in dollars per share) | — |