Note 4: Loans and Allowance for Loan Losses: Schedule of Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Financing Receivables, 30 to 59 Days Past Due | Total loans
Financing Receivable Recorded Investment	$ 3,741	$ 2,493
Financing Receivables, 30 to 59 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	405	510
Financing Receivables, 30 to 59 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	436	134
Financing Receivables, 30 to 59 Days Past Due | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Financing Receivables, 30 to 59 Days Past Due | Residential Real Estate
Financing Receivable Recorded Investment	1,395	749
Financing Receivables, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	1,505	1,100
Financing Receivables, 60 to 89 Days Past Due | Total loans
Financing Receivable Recorded Investment	570	497
Financing Receivables, 60 to 89 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	115	33
Financing Receivables, 60 to 89 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	56	90
Financing Receivables, 60 to 89 Days Past Due | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Financing Receivables, 60 to 89 Days Past Due | Residential Real Estate
Financing Receivable Recorded Investment	234	84
Financing Receivables, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	165	290
Financing Receivables, Equal to Greater than 90 Days Past Due | Total loans
Financing Receivable Recorded Investment	4,534	6,426
Financing Receivables, Equal to Greater than 90 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	181	146
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	219	707
Financing Receivables, Equal to Greater than 90 Days Past Due | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Residential Real Estate
Financing Receivable Recorded Investment	3,074	4,089
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	1,060	1,484
Nonperforming Financial Instruments | Total loans
Financing Receivable Recorded Investment	8,845	9,416
Nonperforming Financial Instruments | Consumer Loan
Financing Receivable Recorded Investment	701	689
Nonperforming Financial Instruments | Commercial Loan
Financing Receivable Recorded Investment	711	931
Nonperforming Financial Instruments | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Nonperforming Financial Instruments | Residential Real Estate
Financing Receivable Recorded Investment	4,703	4,922
Nonperforming Financial Instruments | Commercial Real Estate
Financing Receivable Recorded Investment	2,730	2,874
Financing Receivables Current | Total loans
Financing Receivable Recorded Investment	1,634,103	1,572,178
Financing Receivables Current | Consumer Loan
Financing Receivable Recorded Investment	77,067	77,882
Financing Receivables Current | Commercial Loan
Financing Receivable Recorded Investment	309,876	280,341
Financing Receivables Current | Construction Loan Payable
Financing Receivable Recorded Investment	72,491	66,185
Financing Receivables Current | Residential Real Estate
Financing Receivable Recorded Investment	449,317	445,997
Financing Receivables Current | Commercial Real Estate
Financing Receivable Recorded Investment	725,352	701,773
Performing Financial Instruments | Total loans
Financing Receivable Recorded Investment	1,642,948	1,581,594
Performing Financial Instruments | Consumer Loan
Financing Receivable Recorded Investment	77,768	78,571
Performing Financial Instruments | Commercial Loan
Financing Receivable Recorded Investment	310,587	281,272
Performing Financial Instruments | Construction Loan Payable
Financing Receivable Recorded Investment	72,491	66,185
Performing Financial Instruments | Residential Real Estate
Financing Receivable Recorded Investment	454,020	450,919
Performing Financial Instruments | Commercial Real Estate
Financing Receivable Recorded Investment	728,082	704,647
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