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Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) branch	Dec. 31, 2019 USD ($)
Significant Accounting Policies [Line Items]
Number of full service offices | branch	20
HTM transfers to AFS securities, fair value	$ 0
Foreclosed assets	0
Retained earnings	150,749,000	$ 135,932,000
Operating lease right-of-use assets	$ 8,195,000	$ 9,735,000
Core deposits
Significant Accounting Policies [Line Items]
Acquired finite-lived intangible assets useful life	2 years
Minimum | Core deposits
Significant Accounting Policies [Line Items]
Estimated useful life of intangible asset	5 years
Maximum | Core deposits
Significant Accounting Policies [Line Items]
Estimated useful life of intangible asset	10 years
Premises | Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of premises and equipment	20 years
Premises | Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of premises and equipment	40 years
Leasehold improvements, furniture, fixtures and equipment | Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of premises and equipment	3 years
Leasehold improvements, furniture, fixtures and equipment | Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of premises and equipment	10 years

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