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Troubled Debt Restructurings (Narrative) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($) contract | Dec. 31, 2017 USD ($) contract | Dec. 31, 2016 contract
Financing Receivable, Modifications [Line Items] |  |  |
Number of troubled debt restructured loans | 19 | 21 |
Total troubled debt restructured loans | $ | $ 3,800 | $ 4,400 |
Number of contracts in nonaccrual status | 2 | 1 |
Total of loans in nonaccrual status | $ | $ 118 | $ 44 |
Number of contracts | 1 | 1 | 5
Loan is considered payment default | 30 days |  |
Consumer Installment [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of contracts |  | 1 |
Number of contracts modified by reducing the interest rate |  | 1 |
Residential Single Family [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of contracts modified by changing the amortization period | 1 |  |
Number of contracts modified by reducing the payment amount |  |  | 2
Number of contracts modified by changing payments to interest only |  |  | 1
Number of contracts modified by changing the amortization period and lowering the interest rate |  |  | 1
Commercial Real Estate Non-Owner Occupied [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of contracts |  |  | 1
Number of contracts modified by changing the amortization period and lowering the interest rate |  |  | 1

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