| 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 | ||||||||||||||||
| Investment securities: | ||||||||||||||||
| Taxable | ||||||||||||||||
| Tax-exempt | ||||||||||||||||
| Federal funds sold, securities purchased under agreements to resell and interest-bearing deposits with banks | ||||||||||||||||
| Total interest income | ||||||||||||||||
| Interest expense: | ||||||||||||||||
| Deposits | ||||||||||||||||
| Federal funds purchased and securities sold under agreements to repurchase | ||||||||||||||||
| Corporate and subordinated debentures | ||||||||||||||||
| Other borrowings | — | |||||||||||||||
| Total interest expense | ||||||||||||||||
| Net interest income | ||||||||||||||||
| Provision for credit losses | ||||||||||||||||
| Net interest income after provision for credit losses | ||||||||||||||||
| Noninterest income: | ||||||||||||||||
| Securities losses, net | — | — | ||||||||||||||
| Gain on sale-leaseback, net of transaction costs | — | — | ||||||||||||||
| Other income | ||||||||||||||||
| Total noninterest income | ||||||||||||||||
| Noninterest expense: | ||||||||||||||||
| Salaries and employee benefits | ||||||||||||||||
| Information services expense | ||||||||||||||||
| OREO and loan related expense | ||||||||||||||||
| Occupancy expense | ||||||||||||||||
| Merger, branch consolidation, severance-related, and other expense | — | — | ||||||||||||||
| FDIC assessment and other regulatory charges | ||||||||||||||||
| Supplies, printing and postage expense | ||||||||||||||||
| Amortization of intangibles | ||||||||||||||||
| Professional fees | ||||||||||||||||
| Advertising and marketing | ||||||||||||||||
| Other expense | ||||||||||||||||
| Total noninterest expense | ||||||||||||||||
| Earnings: | ||||||||||||||||
| Income before provision for income taxes | ||||||||||||||||
| Provision for income taxes | ||||||||||||||||
| Net income | ||||||||||||||||
| Basic (in dollars per share) | ||||||||||||||||
| Diluted (in dollars per share) |