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Note 17: Derivatives and Hedging Activities: Cash Flow Hedges - Interest Rate Cap (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Cash Flow Hedges | Interest Rate Cap |  |
Interest Expense, Other | $ 244 | $ 225

X
- Definition Amount of interest expense classified as other. + References No definition available. + Details
Name: | us-gaap_InterestExpenseOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=fil_CashFlowHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateCapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |