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Disclosures About Fair Value of Assets and Liabilities (Details 2) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Collateral-dependent impaired loans [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | $ 982 | $ 786
Fair Value Measurements, Valuation Techniques | Market comparable properties Discounted cash flow | Market comparable properties Discounted cash flow
Collateral-dependent impaired loans [Member] | Comparability Adjustments Percent [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements Unobservable Input Description | Comparability adjustments (%) | Comparability adjustments (%)
Fair Value Input Interest Rate |  |
Mortgage servicing rights [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | $ 1,490 | $ 1,993
Mortgage servicing rights [Member] | Discount Rate [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements Unobservable Input Description | Discount Rate | Discount Rate
Fair Value Input Interest Rate | 9.65% | 9.65%
Mortgage servicing rights [Member] | Constant Prepayment Rate [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements Unobservable Input Description | Constant prepayment rate | Constant prepayment rate
Fair Value Input Interest Rate | 7.51% | 7.61%
Mortgage servicing rights [Member] | T and I Earnings Credit [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements Unobservable Input Description | T&I earnings credit | T&I earnings credit
Fair Value Input Interest Rate | 2.13% | 1.60%
Mortgage servicing rights [Member] | P and I Earnings Credit [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements Unobservable Input Description | P&I earnings credit | P&I earnings credit
Fair Value Input Interest Rate | 1.56% | 0.76%
Mortgage servicing rights [Member] | Inflation For Cost Of Servicing [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements Unobservable Input Description | Inflation for cost of servicing | Inflation for cost of servicing
Fair Value Input Interest Rate | 1.50% | 1.50%

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- Definition Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements. + References No definition available. + Details
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- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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