NOTE 7: ACQUIRED LOANS, LOSS SHARING AGREEMENTS AND FDIC INDEMNIFICATION ASSETS: Business Combinations Policy (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
InterBank
Premium recorded in conjunction with fair value of acquired loans and amount amortized to yield	$ 38	$ 64	$ 138	$ 210
Valley Bank
Premium recorded in conjunction with fair value of acquired loans and amount amortized to yield	$ 0	$ 47	$ 11	$ 189

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.

No definition available.

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