| 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 | ||||||||||||||||
| Loans, including fees | ||||||||||||||||
| Securities, taxable | ||||||||||||||||
| Securities, tax-exempt | ||||||||||||||||
| Other interest-earning assets | ||||||||||||||||
| Total interest income | ||||||||||||||||
| Interest expense | ||||||||||||||||
| Deposits | ||||||||||||||||
| Short-term borrowings | ||||||||||||||||
| Federal Home Loan Bank advances | ||||||||||||||||
| Subordinated debt and other borrowings | ||||||||||||||||
| Total interest expense | ||||||||||||||||
| Net interest income | ||||||||||||||||
| Provision for credit losses | ||||||||||||||||
| Net interest income after provision for credit losses | ||||||||||||||||
| Noninterest income: | ||||||||||||||||
| Mortgage banking income | ||||||||||||||||
| Earnings on bank owned life insurance | ||||||||||||||||
| Other income | ||||||||||||||||
| Total noninterest income | ||||||||||||||||
| Noninterest expense | ||||||||||||||||
| Salaries and benefits | ||||||||||||||||
| Occupancy | ||||||||||||||||
| Furniture and equipment depreciation, rent and maintenance | ||||||||||||||||
| Data processing costs | ||||||||||||||||
| Core conversion costs | — | — | ||||||||||||||
| Acquisition costs | ||||||||||||||||
| Core deposit intangible amortization | — | — | ||||||||||||||
| Other expense | ||||||||||||||||
| Total noninterest expense | ||||||||||||||||
| Income before federal income tax expense | ||||||||||||||||
| Federal income tax expense | ||||||||||||||||
| Net income | ||||||||||||||||
| Basic earnings per share (in dollars per share) | — | |||||||||||||||
| Diluted earnings per share (in dollars per share) | — |