Note 4: Loans and Allowance for Loan Losses: Schedule of Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Financing Receivables Past Due
Financing Receivable Recorded Investment	$ 6,907	$ 6,393
Financing Receivables Past Due | Consumer Loan
Financing Receivable Recorded Investment	1,087	426
Financing Receivables Past Due | Commercial Loan
Financing Receivable Recorded Investment	1,489	2,122
Financing Receivables Past Due | Construction Loan Payable
Financing Receivable Recorded Investment	200	0
Financing Receivables Past Due | Residential Real Estate
Financing Receivable Recorded Investment	2,354	1,804
Financing Receivables Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	1,777	2,041
Loans Receivable
Financing Receivable Recorded Investment	2,189,386	2,171,463
Loans Receivable | Consumer Loan
Financing Receivable Recorded Investment	80,906	80,767
Loans Receivable | Commercial Loan
Financing Receivable Recorded Investment	481,582	468,448
Loans Receivable | Construction Loan Payable
Financing Receivable Recorded Investment	106,345	107,472
Loans Receivable | Residential Real Estate
Financing Receivable Recorded Investment	635,718	627,357
Loans Receivable | Commercial Real Estate
Financing Receivable Recorded Investment	884,835	887,419
Financial Asset, 30 to 59 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	761	180
Financial Asset, 30 to 59 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	756	93
Financial Asset, 30 to 59 Days Past Due | Construction Loan Payable
Financing Receivable Recorded Investment	200	0
Financial Asset, 30 to 59 Days Past Due | Residential Real Estate
Financing Receivable Recorded Investment	974	772
Financial Asset, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	1,008	641
Financial Asset, 30 to 59 Days Past Due | Total Loans
Financing Receivable Recorded Investment	3,699	1,686
Financial Asset, 60 to 89 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	78	53
Financial Asset, 60 to 89 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	243	1,219
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	37	378
Financial Asset, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	9	327
Financial Asset, 60 to 89 Days Past Due | Total Loans
Financing Receivable Recorded Investment	367	1,977
Financial Asset, Equal to or Greater than 90 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	248	193
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	490	810
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	1,343	654
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	760	1,073
Financial Asset, Equal to or Greater than 90 Days Past Due | Total Loans
Financing Receivable Recorded Investment	2,841	2,730
Financing Receivables Current | Consumer Loan
Financing Receivable Recorded Investment	79,819	80,341
Financing Receivables Current | Commercial Loan
Financing Receivable Recorded Investment	480,093	466,326
Financing Receivables Current | Construction Loan Payable
Financing Receivable Recorded Investment	106,145	107,472
Financing Receivables Current | Residential Real Estate
Financing Receivable Recorded Investment	633,364	625,553
Financing Receivables Current | Commercial Real Estate
Financing Receivable Recorded Investment	883,058	885,378
Financing Receivables Current | Total Loans
Financing Receivable Recorded Investment	2,182,479	2,165,070
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
Financing Receivables Greater than 90 Days Past Due and Still Accruing | Total Loans
Financing Receivable Recorded Investment	$ 0	$ 0