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Summary of Significant Accounting Policies (Details) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 01, 2020 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) segment | Dec. 31, 2021 USD ($) subsidiaryTrust | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Reserve requirements for banking subsidiaries |  | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 |  |
Equity |  | 728,941 | 728,941 | 728,941 | 728,941 | 717,689 | $ 663,054 | $ 620,871
Increase in the allowance for credit losses on off-balance sheet credit exposures |  |  | 586 |  |  | 1,062 | (272) |
Investment in qualified affordable housing projects |  | $ 97 | 97 | $ 97 | $ 97 | 485 |  |
Number of reportable business segments |  |  |  | 3 | 3 |  |  |
Minimum | Core deposit intangible |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Amortization period for other intangible assets (in years) |  | 5 years |  |  |  |  |  |
Minimum | Covenants not to compete |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Amortization period for other intangible assets (in years) |  | 3 years |  |  |  |  |  |
Minimum | Customer relationships |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Amortization period for other intangible assets (in years) |  | 6 years |  |  |  |  |  |
Minimum | Building |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Estimated useful (in years) |  | 10 years |  |  |  |  |  |
Minimum | Furniture, fixtures, and equipment |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Estimated useful (in years) |  | 2 years |  |  |  |  |  |
Maximum | Core deposit intangible |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Amortization period for other intangible assets (in years) |  | 10 years |  |  |  |  |  |
Maximum | Covenants not to compete |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Amortization period for other intangible assets (in years) |  | 6 years |  |  |  |  |  |
Maximum | Customer relationships |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Amortization period for other intangible assets (in years) |  | 15 years |  |  |  |  |  |
Maximum | Building |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Estimated useful (in years) |  | 39 years |  |  |  |  |  |
Maximum | Furniture, fixtures, and equipment |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Estimated useful (in years) |  | 20 years |  |  |  |  |  |
Retained Earnings |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Equity |  | $ 475,262 | $ 475,262 | $ 475,262 | $ 475,262 | $ 418,413 | 370,477 | $ 319,396
Cumulative Effect, Adjustment |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Equity |  |  |  |  |  |  | 1,707 |
Cumulative Effect, Adjustment | Retained Earnings |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Equity |  |  |  |  |  |  | $ 1,707 |
Cumulative Effect, Adjustment | Adoption of Accounting Guidance ASU 2016-13 |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Decrease in the allowance for credit losses on loans | $ 2,500 |  |  |  |  |  |  |
Increase in the allowance for credit losses on off-balance sheet credit exposures | 400,000 |  |  |  |  |  |  |
Decrease in deferred tax assets, valuation allowance | 400 |  |  |  |  |  |  |
Cumulative Effect, Adjustment | Adoption of Accounting Guidance ASU 2016-13 | Retained Earnings |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Equity | $ 1,700 |  |  |  |  |  |  |

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