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Note 17: Derivatives and Hedging Activities: Cash Flow Hedges - Interest Rate Swap (Details) - Cash Flow Hedges - Interest Rate Swap $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($)
Derivative, Notional Amount | $ 400,000
Interest Income, Other | $ 673

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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- Definition Amount of interest income earned from interest bearing assets classified as other. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |