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Note 4: Acquired Loans, Loss Sharing Agreements and FDIC Indemnification Assets: Business Combinations Policy (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Valley Bank
Premium Recorded in Conjunction with Fair Value of Acquired Loans and Amount Amortized to Yield	$ 11	$ 217	$ 491

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- Definition

Represents the monetary amount of Premium Recorded in Conjunction with Fair Value of Acquired Loans and Amount Amortized to Yield, during the indicated time period.

+ References

No definition available.

+ Details

Name:	fil_PremiumRecordedInConjunctionWithFairValueOfAcquiredLoansAndAmountAmortizedToYield
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=fil_ValleyBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: