Note 7: Investments in Limited Partnerships: Investments in Affordable Housing Partnerships Policy (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Details
Number of Investments in Affordable Housing Partnerships	15	17
Investments in Affordable Housing Partnerships Carrying Value, Net	$ 22,800	$ 22,900
Federal Affordable Housing Tax Credits	25,200
Expected Amortization of Investments in Affordable Housing Partnerships	22,800
Usage of Federal Affordable Housing Tax Credits	8,000	6,600	$ 6,600
Actual Amortization of Investments in Affordable Housing Partnerships	$ 5,800	$ 5,000	$ 5,200

Represents the monetary amount of Actual Amortization of Investments in Affordable Housing Partnerships, during the indicated time period.

No definition available.

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Represents the monetary amount of Expected Amortization of Investments in Affordable Housing Partnerships, as of the indicated date.

No definition available.

Name:	fil_ExpectedAmortizationOfInvestmentsInAffordableHousingPartnerships
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
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Represents the monetary amount of Federal Affordable Housing Tax Credits, as of the indicated date.

No definition available.

Name:	fil_FederalAffordableHousingTaxCredits
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Data Type:	xbrli:monetaryItemType
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Represents the monetary amount of Investments in Affordable Housing Partnerships Carrying Value, Net, during the indicated time period.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Represents the pure numeric value of Number of Investments in Affordable Housing Partnerships, during the indicated time period.

No definition available.

Name:	fil_NumberOfInvestmentsInAffordableHousingPartnerships
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Data Type:	xbrli:pureItemType
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Represents the monetary amount of Usage of Federal Affordable Housing Tax Credits, as of the indicated date.

No definition available.

Name:	fil_UsageOfFederalAffordableHousingTaxCredits
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.