Note 4: Loans and Allowance for Loan Losses: Schedule of Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Financing Receivables, 30 to 59 Days Past Due | Total loans
Financing Receivable Recorded Investment	$ 5,330	$ 2,493
Financing Receivables, 30 to 59 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	571	510
Financing Receivables, 30 to 59 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	1,237	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	1,140	749
Financing Receivables, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	2,382	1,100
Financing Receivables, 60 to 89 Days Past Due | Total loans
Financing Receivable Recorded Investment	3,322	497
Financing Receivables, 60 to 89 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	46	33
Financing Receivables, 60 to 89 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	105	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	1,555	84
Financing Receivables, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	1,616	290
Financing Receivables, Equal to Greater than 90 Days Past Due | Total loans
Financing Receivable Recorded Investment	12,395	6,426
Financing Receivables, Equal to Greater than 90 Days Past Due | Consumer Loan
Financing Receivable Recorded Investment	278	146
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Loan
Financing Receivable Recorded Investment	2,222	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	3,732	4,089
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment	6,163	1,484
Nonperforming Financial Instruments | Total loans
Financing Receivable Recorded Investment	21,047	9,416
Nonperforming Financial Instruments | Consumer Loan
Financing Receivable Recorded Investment	895	689
Nonperforming Financial Instruments | Commercial Loan
Financing Receivable Recorded Investment	3,564	931
Nonperforming Financial Instruments | Construction Loan Payable
Financing Receivable Recorded Investment	0	0
Nonperforming Financial Instruments | Residential Real Estate
Financing Receivable Recorded Investment	6,427	4,922
Nonperforming Financial Instruments | Commercial Real Estate
Financing Receivable Recorded Investment	10,161	2,874
Financing Receivables Current | Total loans
Financing Receivable Recorded Investment	1,799,456	1,572,178
Financing Receivables Current | Consumer Loan
Financing Receivable Recorded Investment	86,025	77,882
Financing Receivables Current | Commercial Loan
Financing Receivable Recorded Investment	342,239	280,341
Financing Receivables Current | Construction Loan Payable
Financing Receivable Recorded Investment	69,636	66,185
Financing Receivables Current | Residential Real Estate
Financing Receivable Recorded Investment	473,800	445,997
Financing Receivables Current | Commercial Real Estate
Financing Receivable Recorded Investment	827,756	701,773
Performing Financial Instruments | Total loans
Financing Receivable Recorded Investment	1,820,503	1,581,594
Performing Financial Instruments | Consumer Loan
Financing Receivable Recorded Investment	86,920	78,571
Performing Financial Instruments | Commercial Loan
Financing Receivable Recorded Investment	345,803	281,272
Performing Financial Instruments | Construction Loan Payable
Financing Receivable Recorded Investment	69,636	66,185
Performing Financial Instruments | Residential Real Estate
Financing Receivable Recorded Investment	480,227	450,919
Performing Financial Instruments | Commercial Real Estate
Financing Receivable Recorded Investment	837,917	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