Note 12: Business Combinations: Business Combinations Policy (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Business Acquisition, Name of Acquired Entity	On June 12, 2018 the Company announced the signing of an agreement and plan of merger whereby Gideon Bancshares Company (“Gideon”), and its wholly owned subsidiary, First Commercial Bank (“First Commercial”)
Business Combination, Separately Recognized Transactions, Description	a stock and cash transaction valued at approximately $23.2 million, (representing 97.5% of Gideon’s anticipated capital, as adjusted, at closing)
Business Acquisition, Description of Acquired Entity	Gideon held consolidated assets of $217.0 million, loans, net, of $147.7 million, and deposits of $162.2 million.
Noninterest Expense	$ 11,449	$ 10,755
Gideon Bancshares Company
Acquisition Costs, Period Cost	208
Noninterest Expense	$ 133