Loans and ALLL (Narrative) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) loan NumberofLoan	Dec. 31, 2018 USD ($) loan NumberofLoan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loan	0	0
Restructure of Loans through Forbearance of Principal or Accrued Interest \| NumberofLoan	0	0
Migration analysis of loan portfolio period	5 years
Threshold period of continuous performance to return loans to accrual status	6 months
Advance in connection with impaired loans	$ 175	$ 542
Minimum [Member] \| 4 - Low satisfactory [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Delinquency period	10 days
Minimum [Member] \| 5 - Special mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Delinquency period	30 days
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, amortization term	30 years
Maximum [Member] \| 4 - Low satisfactory [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Delinquency period	30 days
Maximum [Member] \| 5 - Special mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Delinquency period	60 days
Commercial, Agricultural, and Residential Portfolio Segments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of days past due (or more), accrual of interest discontinued	90 days
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum days of consumer loan charged off	180 days
Consumer [Member] \| Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, amortization term	15 years
Commercial and Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum percentage of loan	0.80
Commercial and Agricultural [Member] \| Customer Concentration Risk [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum amount of loans	$ 15,000
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum percentage of loan	1
Maximum percentage of principal, interest, taxes and hazard insurance on property over gross income	0.28
Maximum percentage of debt servicing over gross income	0.40
Maximum amount without corporation approval	$ 1,000
Residential, Privately Insured, Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum percentage of loan	0.80

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- Definition

Financing Receivable, Amount, Additional Approval Threshold

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- Definition

Financing Receivable, Continuing Performance, Accrual Of Interest, Threshold Period

+ References

No definition available.

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Financing Receivable, Credit Quality, Delinquency Period

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Financing Receivable, Debt Servicing To Gross Income Ratio, Maximum

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Financing Receivable, Loan To Value Ratio, Maximum

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Financing Receivable, Nonperforming, Nonaccrual Of Interest, Threshold Period

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Financing Receivable, Payment Amount To Gross Income Ratio, Maximum

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Financing Receivable, Term

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No definition available.

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- Definition

Restructure of loans through the forbearance of principal or accrued interest.

+ References

No definition available.

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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.

+ References

No definition available.

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Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 50
-Paragraph 21
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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
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- Definition

Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18794-111554

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- Definition

Threshold period past due for financing receivable to write off as uncollectible, 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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