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Fair Value (Summary of Assets Measured at Fair Value on Non Recurring Basis) (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financing Receivable, Individually Evaluated for Impairment | $ 4,478,000 | $ 6,926,000 | $ 13,590,000
non-financial assets measured at fair value on recurring basis | 0 |  |
Impaired Loans Collateral Dependent [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |  |
Assets: |  |  |
Assets, Fair Value Disclosure |  | 522,000 |
Impaired Loans Collateral Dependent [Member] | Fair Value, Measurements, Nonrecurring [Member] | Company Determined Fair Value (Level 3) [Member] |  |  |
Assets: |  |  |
Assets, Fair Value Disclosure |  | 522,000 |
Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |  |
Assets: |  |  |
Assets, Fair Value Disclosure | 94,000 | 130,000 |
Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member] | Company Determined Fair Value (Level 3) [Member] |  |  |
Assets: |  |  |
Assets, Fair Value Disclosure | 94,000 | 130,000 |
Minimum [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financing Receivable, Individually Evaluated for Impairment | 500,000 |  |
Consumer |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financing Receivable, Individually Evaluated for Impairment |  | 6,000 |
Commercial |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financing Receivable, Individually Evaluated for Impairment | 319,000 | $ 786,000 | $ 1,791,000
Substandard [Member] | Minimum [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financing Receivable, Individually Evaluated for Impairment | $ 500,000 |  |

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