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Basis of Presentation (Details) | 12 Months Ended
--- | ---
Dec. 31, 2025 USD ($) segment office | Dec. 31, 2024 USD ($)
Basis of Presentation |  |
Number of full-service banking offices | office | 147 |
Number of lending offices | office | 3 |
Impairment of restricted securities | $ 0 | $ 0
Number of days loans past due placed on non accrual status | 90 days |
Allowance for credit loss, completion of revision, period from forecast start date | 5 years |
Adjustment of allowance for credit loss related to merger | $ 24,800,000 |
BOLI, as percentage of capital plus reserves, maximum, individual carrier (as a percent) | 10.00% |
BOLI, as percentage of capital plus reserves, maximum, aggregate (as a percent) | 25.00% |
Number of operating segments | segment | 1 |
Number of reportable segments | segment | 1 |
Legacy Berkshire Portfolio |  |
Basis of Presentation |  |
Adjustment of allowance for credit loss related to merger | $ 5,600,000 |
Minimum |  |
Basis of Presentation |  |
Allowance for credit loss, start of revision, period from forecast start date | 2 years |
Lease term | 1 year |
Maximum |  |
Basis of Presentation |  |
Allowance for credit loss, start of revision, period from forecast start date | 3 years |
Lease term | 18 years |

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