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Fair Market Value of Financial Assets and Liabilities, Quantitative Information about Level 3 Fair Value Measurements (Details) $ in Thousands | Jun. 30, 2018 USD ($) | Dec. 31, 2017 USD ($)
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Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights | $ 3,772 | $ 3,484
Impaired loans (collateral dependent) | 357 | 2,709
Other real estate owned | $ 4,499 | $ 18,951
Significant Unobservable Inputs (Level 3) [Member] | Valuation, Income Approach [Member] | Constant Prepayment Rate [Member] | Minimum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights, measurement input | 0.070 | 0.070
Significant Unobservable Inputs (Level 3) [Member] | Valuation, Income Approach [Member] | Constant Prepayment Rate [Member] | Maximum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights, measurement input | 0.275 | 0.450
Significant Unobservable Inputs (Level 3) [Member] | Valuation, Income Approach [Member] | Constant Prepayment Rate [Member] | Weighted Average [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights, measurement input | 0.085 | 0.100
Significant Unobservable Inputs (Level 3) [Member] | Valuation, Income Approach [Member] | Probability of Default [Member] | Minimum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights, measurement input | 0.000 | 0.000
Significant Unobservable Inputs (Level 3) [Member] | Valuation, Income Approach [Member] | Probability of Default [Member] | Maximum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights, measurement input | 1.000 | 1.000
Significant Unobservable Inputs (Level 3) [Member] | Valuation, Income Approach [Member] | Probability of Default [Member] | Weighted Average [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights, measurement input | 0.028 | 0.030
Significant Unobservable Inputs (Level 3) [Member] | Valuation, Income Approach [Member] | Discount Rate [Member] | Minimum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights, measurement input | 0.100 | 0.100
Significant Unobservable Inputs (Level 3) [Member] | Valuation, Income Approach [Member] | Discount Rate [Member] | Maximum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights, measurement input | 0.115 | 0.115
Significant Unobservable Inputs (Level 3) [Member] | Valuation, Income Approach [Member] | Discount Rate [Member] | Weighted Average [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Mortgage servicing rights, measurement input | 0.101 | 0.101
Significant Unobservable Inputs (Level 3) [Member] | Market Comparable Properties [Member] | Marketability Discount [Member] | Minimum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Impaired loans (collateral dependent), measurement input | 0.059 | 0.019
Significant Unobservable Inputs (Level 3) [Member] | Market Comparable Properties [Member] | Marketability Discount [Member] | Maximum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Impaired loans (collateral dependent), measurement input | 0.925 | 0.898
Significant Unobservable Inputs (Level 3) [Member] | Market Comparable Properties [Member] | Marketability Discount [Member] | Weighted Average [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Impaired loans (collateral dependent), measurement input | 0.536 | 0.385
Significant Unobservable Inputs (Level 3) [Member] | Market Comparable Properties [Member] | Comparability Adjustment [Member] | Minimum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Other real estate owned, measurement input | 0.010 | 0.060
Significant Unobservable Inputs (Level 3) [Member] | Market Comparable Properties [Member] | Comparability Adjustment [Member] | Maximum [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Other real estate owned, measurement input | 0.300 | 0.586
Significant Unobservable Inputs (Level 3) [Member] | Market Comparable Properties [Member] | Comparability Adjustment [Member] | Weighted Average [Member] |  |
Quantitative Information about Unobservable Inputs Used in Level 3 Fair Value Measurements [Abstract] |  |
Other real estate owned, measurement input | 0.127 | 0.150

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- Definition This element represents the fair value disclosure of impaired loan receivable as presented on the statement of financial position which may include mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts, or any other loans which are due the Company as of the balance sheet date. + References No definition available. + Details
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- Definition Value of input used to measure impaired loans. + References No definition available. + Details
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- Definition Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Value of input used to measure real estate owned by financial institution by financial institution which is not directly related to its business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
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- Definition Value of input used to measure servicing asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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