Accounting Policies (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($) Payment Segment	Dec. 31, 2019 USD ($)
Certificates of Deposits in Other Banks [Abstract]
Maturity period of certificates of deposit in other banks	18 months
Investments [Abstract]
Securities held-to-maturity	$ 0	$ 517
Loans [Abstract]
Past due period after which loans must be well secured and in the process of collection to continue accruing interest	90 days
Period of current principal and interest payments for reclassifying nonaccrual loans as accruing loans	6 months
Allowance for Credit Losses [Abstract]
Impact of difference in amortized cost basis versus consideration of loan balances on allowance for credit losses	1
Number of delinquent monthly payments before loan charge off \| Payment	5
Current value assessment period for past due loans secured against real estate	90 days
Threshold period past due for initiation of foreclosure proceedings	120 days
Goodwill and Core Deposit Intangible [Abstract]
Goodwill	$ 65,490	$ 65,490
Segment Reporting [Abstract]
Number of operating segments \| Segment	1
Minimum [Member]
Allowance for Credit Losses [Abstract]
Percentage exposure of capital	5.00%
Other Real Estate Owned [Abstract]
Typical frequency of periodic reviews	12 months
Maximum [Member]
Other Real Estate Owned [Abstract]
Typical frequency of periodic reviews	18 months
Frequency of periodic reviews in general	24 months
Buildings [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Furniture, Fixtures, and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	2 years
Furniture, Fixtures, and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Commercial [Member]
Allowance for Credit Losses [Abstract]
Threshold period past due for individual evaluations	90 days
Commercial [Member] \| 90+ Days Past Due [Member] \| Minimum [Member]
Allowance for Credit Losses [Abstract]
Threshold outstanding loan balance for individual evaluations	$ 1,000
Commercial [Member] \| Nonaccrual Status [Member] \| Minimum [Member]
Allowance for Credit Losses [Abstract]
Threshold outstanding loan balance for individual evaluations	1,000
Threshold amount of outstanding loan balance for specific reserve to be created	1,000
Commercial [Member] \| TDR [Member] \| Minimum [Member]
Allowance for Credit Losses [Abstract]
Threshold outstanding loan balance for individual evaluations	1,000
Threshold amount of outstanding loan balance for specific reserve to be created	1,000
Commercial [Member] \| Criticized [Member] \| Minimum [Member]
Allowance for Credit Losses [Abstract]
Threshold outstanding loan balance for individual evaluations	1,000
Threshold amount of outstanding loan balance for specific reserve to be created	$ 1,000
Commercial [Member] \| Unsecured Commercial Loan [Member]
Allowance for Credit Losses [Abstract]
Charge off threshold for loans considered uncollectible	90 days
Consumer [Member] \| Closed-End Consumer Loan [Member]
Allowance for Credit Losses [Abstract]
Charge off threshold for loans considered uncollectible	120 days

No definition available.

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Refer to current value assessment period for past due loans secured against real estate, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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Threshold amount of outstanding loan balance for a specific reserve equal to the difference between book value of the loan and the fair value assigned to the collateral to be created until such time as the loan is foreclosed.

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No definition available.

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Percentage of the impact of the difference in amortized cost basis versus consideration of loan balances on the allowance for credit losses.

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Refers to maturity period of certificates of deposit in other banks, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The maximum number of delinquent payments that a closed-end loan (excluding conventional 1-4 family residential loans and installment and revolving loans secured by real estate) may be delinquent before being charged-off. If a loan is considered uncollectable, it is charged off earlier.

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The frequency of periodic reviews for appraisals on foreclosed properties and other real estate owned generally, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The typical frequency of periodic reviews for appraisals on foreclosed properties and other real estate owned, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Refers to the past due period after which loans must be well secured and in the process of collection to continue accruing interest, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The required percentage exposure of capital included as factors in the allowance for credit losses (ACL) model.

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No definition available.

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Period for which principal and interest payments must remain current for reclassifying nonaccrual loans as accruing loans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Threshold amount outstanding loan balance for individual evaluations of a loan under internal risk grading system.

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Threshold period past due for individual evaluation, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Threshold period past due for the initiation of foreclosure proceedings, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Topic 326
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-Section 50
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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of investment in debt security measured at amortized cost (held-to-maturity).

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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