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Fair Values of Financial Instruments (Details 4) - Fair Value Measurements [Member] - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Impaired loans [Member] |  |
Fair Value Asset Measured On Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Nonrecurring | $ 1,818 | $ 2,282
Foreclosed real estate [Member] |  |
Fair Value Asset Measured On Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Nonrecurring | 1,699 | 2,665
Fair Value, Inputs, Level 1 [Member] | Impaired loans [Member] |  |
Fair Value Asset Measured On Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Nonrecurring | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Foreclosed real estate [Member] |  |
Fair Value Asset Measured On Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Nonrecurring | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Impaired loans [Member] |  |
Fair Value Asset Measured On Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Nonrecurring | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Foreclosed real estate [Member] |  |
Fair Value Asset Measured On Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Nonrecurring | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Impaired loans [Member] |  |
Fair Value Asset Measured On Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Nonrecurring | 1,818 | 2,282
Fair Value, Inputs, Level 3 [Member] | Foreclosed real estate [Member] |  |
Fair Value Asset Measured On Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Nonrecurring | $ 1,699 | $ 2,665

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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