Note 4: Loans and Allowance for Loan Losses: Schedule of Debtor Troubled Debt Restructuring, Current Period (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)
Total loans
Financing Receivable, Modifications, Number of Contracts	3	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 991	$ 0
Consumer Loan
Financing Receivable, Modifications, Number of Contracts	0	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 0
Commercial Loan
Financing Receivable, Modifications, Number of Contracts	1	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 69	$ 0
Construction Loan Payable
Financing Receivable, Modifications, Number of Contracts	0	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 0
Residential Real Estate
Financing Receivable, Modifications, Number of Contracts	0	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 0
Commercial Real Estate
Financing Receivable, Modifications, Number of Contracts	2	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 922	$ 0