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Note 17: Commitments and Credit Risk: Letters of Credit (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Letters of Credit Outstanding, Amount	$ 26,300	$ 28,900
Letters of Credit Terms Up to Five Years	26,300	28,400
Letters of credit having terms over five years	0	476
Guarantee the payment of principal and interest on a Multifamily Housing Refunding Revenue Bond Issue
Letters of credit having terms over five years	$ 0	$ 476

X

- Definition

Represents the monetary amount of Letters of credit having terms over five years, as of the indicated date.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the monetary amount of Letters of Credit Terms Up to Five Years, as of the indicated date.

+ References

No definition available.

+ Details

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

X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_InvestmentTypeAxis=fil_GuaranteeThePaymentOfPrincipalAndInterestOnAMultifamilyHousingRefundingRevenueBondIssueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: