Note 4: Loans and Allowance for Loan Losses: Schedule of Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Financial Asset, 30 to 59 Days Past Due | Total Loans
Financing Receivable Recorded Investment	$ 2,785	$ 1,075
Financial Asset, 30 to 59 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	475	128
Financial Asset, 30 to 59 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	277	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	1,457	227
Financial Asset, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	576	296
Financial Asset, 60 to 89 Days Past Due | Total Loans
Financing Receivable Recorded Investment	1,908	1,126
Financial Asset, 60 to 89 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	136	46
Financial Asset, 60 to 89 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	230	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	1,246	1,054
Financial Asset, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	296	1
Financial Asset, Equal to or Greater than 90 Days Past Due | Total Loans
Financing Receivable Recorded Investment	4,860	9,409
Financial Asset, Equal to or Greater than 90 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	173	176
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	225	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	1,442	1,714
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	3,020	5,617
Nonperforming Financial Instruments | Total Loans
Financing Receivable Recorded Investment	9,553	11,610
Nonperforming Financial Instruments | Consumer Loan
Financing Receivable Recorded Investment	784	350
Nonperforming Financial Instruments | Commercial Loan
Financing Receivable Recorded Investment	732	2,351
Nonperforming Financial Instruments | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Nonperforming Financial Instruments | Residential Real Estate
Financing Receivable Recorded Investment	4,145	2,995
Nonperforming Financial Instruments | Commercial Real Estate
Financing Receivable Recorded Investment	3,892	5,914
Financing Receivables Current | Total Loans
Financing Receivable Recorded Investment	1,934,049	1,854,701
Financing Receivables Current | Consumer Loan
Financing Receivable Recorded Investment	100,837	97,184
Financing Receivables Current | Commercial Loan
Financing Receivable Recorded Investment	354,543	353,523
Financing Receivables Current | Construction Loan Payable
Financing Receivable Recorded Investment	96,814	80,134
Financing Receivables Current | Residential Real Estate
Financing Receivable Recorded Investment	535,271	488,997
Financing Receivables Current | Commercial Real Estate
Financing Receivable Recorded Investment	846,584	834,863
Performing Financial Instruments | Total Loans
Financing Receivable Recorded Investment	1,943,602	1,866,311
Performing Financial Instruments | Consumer Loan
Financing Receivable Recorded Investment	101,621	97,534
Performing Financial Instruments | Commercial Loan
Financing Receivable Recorded Investment	355,275	355,874
Performing Financial Instruments | Construction Loan Payable
Financing Receivable Recorded Investment	96,814	80,134
Performing Financial Instruments | Residential Real Estate
Financing Receivable Recorded Investment	539,416	491,992
Performing Financial Instruments | Commercial Real Estate
Financing Receivable Recorded Investment	850,476	840,777
Financing Receivables Greater than 90 Days Past Due and Still Accruing | Total Loans
Financing Receivable Recorded Investment	1	0
Financing Receivables Greater than 90 Days Past Due and Still Accruing | Consumer Loan
Financing Receivable Recorded Investment	1	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