Note 4: Loans and Allowance for Loan Losses: Schedule of Debtor Troubled Debt Restructuring, Current Period (Details)	3 Months Ended		9 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)
Total loans
modifications	8	9	18	9
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 9,665	$ 451	$ 12,454	$ 451
Consumer Loan
modifications	0	2	0	2
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 0	$ 27	$ 0	$ 27
Commercial Loan
modifications	3	2	5	2
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 3,881	$ 64	$ 3,899	$ 64
Construction Loan Payable
modifications	0	0	0	0
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 0	$ 0	$ 0	$ 0
Residential Real Estate
modifications	0	4	1	4
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 0	$ 305	$ 702	$ 305
Commercial Real Estate
modifications	5	1	12	1
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 5,784	$ 55	$ 7,853	$ 55