Note 8: Income Taxes: Schedule of Reconciliation of Income Tax Expense at the Statutory Rate to Actual Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 1,986	$ 1,896	$ 6,052	$ 5,738
Income Tax Expense, Actual	1,810	1,463	6,245	4,556
Increase (decrease) in taxes
Nontaxable Municipal Income	(115)	(124)	(341)	(385)
Current State and Local Tax Expense (Benefit)	287	52	530	160
Cash Surrender Value Of Bank-owned Life Insurance	(66)	(176)	(197)	(323)
Tax Credit Benefits	(224)	(81)	(672)	(267)
Tax Credit Benefits Realized on Acquisition	0	0	0	0
Adjustment of deferred tax asset for enacted changes in tax laws	0	0	1,124	0
Taxes, Other	$ (58)	$ (104)	$ (251)	$ (367)