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