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Note 4: Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended |
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Sep. 30, 2018 | Jun. 30, 2018
Financing Receivable, Credit Quality, Additional Information | lending relationships of $1 million or more, exclusive of any consumer or owner-occupied residential loan, are subject to an annual credit analysis which is prepared by the loan administration department and presented to a loan committee with appropriate lending authority. A sample of lending relationships in excess of $2.5 million are subject to an independent loan review annually, in order to verify risk ratings |
Loans without a specific valuation allowance |  |
Purchased Credit Impaired Loans | $ 10,800 | $ 14,600

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- Definition Represents the monetary amount of Purchased Credit Impaired Loans, as of the indicated date. + References No definition available. + Details
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Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Includes any additional disclosures related to the credit quality of financing receivables. This may include a description of a credit quality indicator or a description of how the internal risk ratings used by a company relate to the likelihood of loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953659-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953664-111524 + Details
Name: | us-gaap_FinancingReceivableCreditQualityAdditionalInformation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=fil_LoansWithoutASpecificValuationAllowanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |