Summary of Significant Accounting Policies (Details) $ in Thousands	2 Months Ended	12 Months Ended
	Mar. 01, 2021 USD ($)	Dec. 31, 2020 USD ($) payment segment branch	Dec. 31, 2019 USD ($)	Jan. 01, 2019 USD ($)	Jul. 31, 2000 branch
Summary of Significant Accounting Policies [Line Items]
Number of branches | branch		25
Reportable operating segments | segment		1
Lease liability		$ 17,539	$ 18,104
Lease right-of-use asset		18,439	19,048
Bank-owned life insurance		31,363	30,776
Goodwill		5,656	5,656
Number of offices related to the goodwill in acquisition | branch					2
Investment assets under management		1,000,000	$ 916,600
Subsequent Event
Summary of Significant Accounting Policies [Line Items]
Approved customer requests for PPP Loans	$ 144,800
Accounting Standards Update 2016-02
Summary of Significant Accounting Policies [Line Items]
Lease liability				$ 18,000
Lease right-of-use asset				$ 19,000
Minimum | Pro Forma
Summary of Significant Accounting Policies [Line Items]
Allowance for Credit Loss		$ 6,000
Allowance for credit losses to total loans ratio		1.70%
Minimum | Pro Forma | Unfunded Loan Commitment
Summary of Significant Accounting Policies [Line Items]
Allowance for Credit Loss		$ 8,000
Maximum | Pro Forma
Summary of Significant Accounting Policies [Line Items]
Allowance for Credit Loss		$ 8,000
Allowance for credit losses to total loans ratio		1.80%
Maximum | Pro Forma | Unfunded Loan Commitment
Summary of Significant Accounting Policies [Line Items]
Allowance for Credit Loss		$ 10,000
Bank premises, land improvements, and leasehold improvements | Minimum
Summary of Significant Accounting Policies [Line Items]
Premises and equipment useful life		10 years
Bank premises, land improvements, and leasehold improvements | Maximum
Summary of Significant Accounting Policies [Line Items]
Premises and equipment useful life		39 years
Computer software and equipment | Minimum
Summary of Significant Accounting Policies [Line Items]
Premises and equipment useful life		3 years
Computer software and equipment | Maximum
Summary of Significant Accounting Policies [Line Items]
Premises and equipment useful life		5 years
Furniture, fixtures, and equipment | Minimum
Summary of Significant Accounting Policies [Line Items]
Premises and equipment useful life		3 years
Furniture, fixtures, and equipment | Maximum
Summary of Significant Accounting Policies [Line Items]
Premises and equipment useful life		10 years
Residential mortgages
Summary of Significant Accounting Policies [Line Items]
Early payment default period | payment		4
Lines of Credit and Demand Notes | Minimum
Summary of Significant Accounting Policies [Line Items]
Period that loan deferred income is amortized		3 years
Lines of Credit and Demand Notes | Maximum
Summary of Significant Accounting Policies [Line Items]
Period that loan deferred income is amortized		5 years