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Proposed Acquisition of PB Bankshares, Inc. (Narrative) (Details) |  | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 07, 2025 $ / shares shares | Sep. 30, 2025 USD ($) item | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |
Total Assets |  | $ 2,411,951,000 |  | $ 2,317,462,000 |  |  |
Deposits |  | 2,073,968,000 |  | 1,859,163,000 |  |  |
Stockholders’ equity |  | $ 234,905,000 | $ 225,425,000 | $ 213,508,000 | $ 195,654,000 | $ 182,187,000 | $ 181,070,000
Number of former non-employee directors to be appointed on or immediately after t effective time of the merger | item |  | 2 |  |  |  |  |
Appointed as Member of Class of Board of Directors [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of former non-employee directors to be appointed on or immediately after t effective time of the merger | item |  | 1 |  |  |  |  |
Appointee term expiration after effective time of merger |  | 2 years |  |  |  |  |
Appointee Not Appointed as Member of Class of Board of Directors [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of former non-employee directors to be appointed on or immediately after t effective time of the merger | item |  | 1 |  |  |  |  |
Appointee term expiration after effective time of merger |  | 3 years |  |  |  |  |
PB Bankshares, Inc. [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Total Assets |  | $ 464,100,000 |  |  |  |  |
Deposits |  | 363,400,000 |  |  |  |  |
Stockholders’ equity |  | $ 50,300,000 |  |  |  |  |
Cash paid per share | $ / shares | $ 19.75 |  |  |  |  |  |
Percent exchanged for stock | 80.00% |  |  |  |  |  |
Percent exchanged for cash | 20.00% |  |  |  |  |  |
Business Acquisition, shares exchanged | shares | 0.7850 |  |  |  |  |  |
Percent decline in market value resulting in possible termination |  | 20.00% |  |  |  |  |

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