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Summary of Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)	Jan. 01, 2018 USD ($)	Jan. 01, 2017 USD ($)
Property, Plant and Equipment [Line Items]
Reserve requirements for banking subsidiaries	$ 9,500	$ 6,600
Adoption of ASU 2016-01				$ 0
Investment in qualified affordable housing projects	$ 485	1,000
Number of reportable business segments \| segment	3
Retained earnings	$ 370,477	$ 319,396
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
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
Building \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful (in years)	10 years
Building \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful (in years)	39 years
Furniture, fixtures, and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful (in years)	2 years
Furniture, fixtures, and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful (in years)	20 years
Accounting Standards Update 2016-01
Property, Plant and Equipment [Line Items]
Adoption of ASU 2016-01			$ 0
Accounting Standards Update 2014-09
Property, Plant and Equipment [Line Items]
Adoption of ASU 2016-01			1,780
Retained earnings			1,800
Accumulated Other Comprehensive (Loss) Income
Property, Plant and Equipment [Line Items]
Adoption of ASU 2016-01				$ (9,958)
Accumulated Other Comprehensive (Loss) Income \| Accounting Standards Update 2016-01
Property, Plant and Equipment [Line Items]
Adoption of ASU 2016-01			$ 65