Note 4: Loans and Allowance for Loan Losses: Schedule of Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Financial Asset, 30 to 59 Days Past Due | Total Loans
Financing Receivable Recorded Investment	$ 3,113	$ 1,075
Financial Asset, 30 to 59 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	325	128
Financial Asset, 30 to 59 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	754	424
Financial Asset, 30 to 59 Days Past Due | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Financial Asset, 30 to 59 Days Past Due | Residential Real Estate
Financing Receivable Recorded Investment	1,180	227
Financial Asset, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	854	296
Financial Asset, 60 to 89 Days Past Due | Total Loans
Financing Receivable Recorded Investment	1,406	1,126
Financial Asset, 60 to 89 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	85	46
Financial Asset, 60 to 89 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	5	25
Financial Asset, 60 to 89 Days Past Due | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Financial Asset, 60 to 89 Days Past Due | Residential Real Estate
Financing Receivable Recorded Investment	1,300	1,054
Financial Asset, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	16	1
Financial Asset, Equal to or Greater than 90 Days Past Due | Total Loans
Financing Receivable Recorded Investment	5,338	9,409
Financial Asset, Equal to or Greater than 90 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	164	176
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	172	1,902
Financial Asset, Equal to or Greater than 90 Days Past Due | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due | Residential Real Estate
Financing Receivable Recorded Investment	2,161	1,714
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	2,841	5,617
Nonperforming Financial Instruments | Total Loans
Financing Receivable Recorded Investment	9,857	11,610
Nonperforming Financial Instruments | Consumer Loan
Financing Receivable Recorded Investment	574	350
Nonperforming Financial Instruments | Commercial Loan
Financing Receivable Recorded Investment	931	2,351
Nonperforming Financial Instruments | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Nonperforming Financial Instruments | Residential Real Estate
Financing Receivable Recorded Investment	4,641	2,995
Nonperforming Financial Instruments | Commercial Real Estate
Financing Receivable Recorded Investment	3,711	5,914
Financing Receivables Current | Total Loans
Financing Receivable Recorded Investment	1,885,353	1,854,701
Financing Receivables Current | Consumer Loan
Financing Receivable Recorded Investment	100,543	97,184
Financing Receivables Current | Commercial Loan
Financing Receivable Recorded Investment	374,797	353,523
Financing Receivables Current | Construction Loan Payable
Financing Receivable Recorded Investment	89,289	80,134
Financing Receivables Current | Residential Real Estate
Financing Receivable Recorded Investment	484,706	488,997
Financing Receivables Current | Commercial Real Estate
Financing Receivable Recorded Investment	836,018	834,863
Performing Financial Instruments | Total Loans
Financing Receivable Recorded Investment	1,895,210	1,866,311
Performing Financial Instruments | Consumer Loan
Financing Receivable Recorded Investment	101,117	97,534
Performing Financial Instruments | Commercial Loan
Financing Receivable Recorded Investment	375,728	355,874
Performing Financial Instruments | Construction Loan Payable
Financing Receivable Recorded Investment	89,289	80,134
Performing Financial Instruments | Residential Real Estate
Financing Receivable Recorded Investment	489,347	491,992
Performing Financial Instruments | Commercial Real Estate
Financing Receivable Recorded Investment	839,729	840,777
Financing Receivables Greater than 90 Days Past Due and Still Accruing | Total Loans
Financing Receivable Recorded Investment	0	0
Financing Receivables Greater than 90 Days Past Due and Still Accruing | Consumer Loan
Financing Receivable Recorded Investment	0	0
Financing Receivables Greater than 90 Days Past Due and Still Accruing | Commercial Loan
Financing Receivable Recorded Investment	0	0
Financing Receivables Greater than 90 Days Past Due and Still Accruing | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Financing Receivables Greater than 90 Days Past Due and Still Accruing | Residential Real Estate
Financing Receivable Recorded Investment	0	0
Financing Receivables Greater than 90 Days Past Due and Still Accruing | Commercial Real Estate
Financing Receivable Recorded Investment	$ 0	$ 0