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Summary of Significant Accounting Policies - Narrative (Details) |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 01, 2023 USD ($) | Dec. 31, 2023 USD ($) valuationMethod segment investment $ / shares | Dec. 31, 2022 USD ($) $ / shares
Summary of Significant Accounting Policies [Line Items] |  |  |
Number of equity method investments | investment |  | 3 |
Restricted cash |  | $ 0 | $ 0
Period past due for loans to be considered as delinquent |  | 90 days |
Total valuation methods used on impaired loans | valuationMethod |  | 2 |
Total loans serviced for others |  | $ 1,800,000 | 1,600,000
Deferred income tax valuation allowance |  | 0 |
Liability for uncertain tax positions |  | 0 |
Unrecognized tax benefits |  | $ 0 |
Number of reportable segments | segment |  | 3 |
Adjustment to retained earnings |  | $ (160,862,000) | (144,911,000)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Increase in allowance for credit losses | $ 10,000,000 |  |
Increase related to PCD financial assets | 1,200,000 |  |
Tax effect | 2,100,000 |  |
Adjustment to retained earnings | 6,600,000 |  |
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Loans |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Increase in allowance for credit losses | 8,900,000 |  |
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Unfunded Loan Commitment |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Increase in allowance for credit losses | $ 1,100,000 |  |
Software |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives |  | 3 years |
Minimum | Building |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives |  | 7 years |
Minimum | Furniture, fixtures and equipment |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives |  | 3 years |
Maximum | Building |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives |  | 40 years |
Maximum | Furniture, fixtures and equipment |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives |  | 10 years |
Subsidiary bank |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
FHLB stock |  | $ 2,100,000 | $ 10,000,000
FHLB stock par value (in dollars per share) | $ / shares |  | $ 100 | $ 100
Trabian |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Ownership interest |  | 80.80% |

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