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Loans and ALLL (Narrative) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) NumberofLoan | Sep. 30, 2018 NumberofLoan | Sep. 30, 2019 USD ($) loan NumberofLoan | Sep. 30, 2018 NumberofLoan | Dec. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Threshold period of continuous performance to return loans to accrual status |  |  | 6 months |  |
Migration analysis of loan portfolio period |  |  | 5 years |  |
Advance in connection with impaired loans | $ 228 |  | $ 228 |  | $ 542
Number of loans restructured through the forbearance of principal or accrued interest | NumberofLoan | 0 | 0 | 0 | 0 |
Loans in default | 0 | 0 | 0 | 0 |
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 |  |
Total Consumer [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Maximum days of consumer loan charged off |  |  | 180 days |  |
Total Consumer [Member] | Maximum [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing receivable, amortization term |  |  | 15 years |  |
Commercial And Agricultural Portfolio Segment [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Maximum percentage of loan |  |  | 0.80 |  |
Commercial And Agricultural Portfolio Segment [Member] | Customer Concentration Risk [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Maximum amount of loans |  |  | $ 15,000 |  |
Commercial Advances to Mortgage Brokers Segment [Member] | Customer Concentration Risk [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Maximum amount of loans |  |  | $ 50,000 |  |
Commercial Advances to Mortgage Brokers Segment [Member] | Customer Concentration Risk [Member] | Minimum [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loan advance maturity period |  |  | 20 days |  |
Commercial Advances to Mortgage Brokers Segment [Member] | Customer Concentration Risk [Member] | Maximum [Member] |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loan advance maturity period |  |  | 30 days |  |
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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