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Note 1: Nature of Operations and Summary of Significant Accounting Policies: Restriction On Cash and Due From Banks (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Details |  |
Federal Reserve Bank Reserve Fund | $ 59,100 | $ 53,800

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- Definition Represents the monetary amount of Federal Reserve Bank Reserve Fund, 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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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration