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Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2020
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items] |  |  |  |
Maximum refinement period of fair values after closing date of acquisition | 1 year |  |  |
Loan minimum balance included in specific reserve analysis | $ 1 |  |  |
Tax credit carry back period | 1 year |  |  |
Tax credit carry forward period | 20 years |  |  |
Weighted-average anti-dilutive potential common shares | 5,394 | 16,338 | 100,391 | 0
Low Income Housing Credit Investments [Member] |  |  |  |
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items] |  |  |  |
Tax credit earning period | 10 years |  |  |
Buildings [Member] |  |  |  |
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items] |  |  |  |
Estimated useful lives of assets | 30 years |  |  |
Furniture, Fixtures and Equipment [Member] | Minimum [Member] |  |  |  |
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items] |  |  |  |
Estimated useful lives of assets | 3 years |  |  |
Furniture, Fixtures and Equipment [Member] | Maximum [Member] |  |  |  |
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items] |  |  |  |
Estimated useful lives of assets | 10 years |  |  |
Software [Member] |  |  |  |
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items] |  |  |  |
Amortization Expense Charged Off Period | 3 years |  |  |
Core Systems [Member] |  |  |  |
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items] |  |  |  |
Amortization Expense Charged Off Period | 7 years |  |  |

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