Note 3: Loans and Allowance For Loan Losses: Loans Serviced for Others (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Loans serviced for others	$ 254,000	$ 266,200
Unused lines of Credit
Loans serviced for others	$ 37,800	$ 60,500

Represents the monetary amount of Loans serviced for others, during the indicated time period.

No definition available.

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