Note 11: Fair Value Measurements: Schedule of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Letter of Credit
Financial Instruments Owned Carrying Amount	$ 0	$ 0
Line of Credit
Financial Instruments Owned Carrying Amount	0	0
Financial Assets | Cash and Cash Equivalents
Financial Instruments Owned Carrying Amount	25,102	30,786
Financial Assets | Interest-bearing time deposits
Financial Instruments Owned Carrying Amount	747	747
Financial Assets | Investment in Federal Home Loan Bank Stock
Financial Instruments Owned Carrying Amount	5,191	3,547
Financial Assets | Investment In Stock Of Federal Reserve Bank Of St Louis
Financial Instruments Owned Carrying Amount	3,193	2,357
Financial Assets | Loans Receivable
Financial Instruments Owned Carrying Amount	1,449,560	1,397,730
Financial Assets | Accrued interest receivable
Financial Instruments Owned Carrying Amount	8,305	6,769
Financial Liabilities | Deposits
Financial Instruments Owned Carrying Amount	1,471,690	1,455,597
Financial Liabilities | Securities Sold under Agreements to Repurchase
Financial Instruments Owned Carrying Amount	6,627	10,212
Financial Liabilities | Federal Home Loan Bank Advances
Financial Instruments Owned Carrying Amount	84,654	43,637
Financial Liabilities | Accrued interest payable
Financial Instruments Owned Carrying Amount	995	918
Financial Liabilities | Subordinated Debt
Financial Instruments Owned Carrying Amount	14,872	14,848
Commitments to Extend Credit
Financial Instruments Owned Carrying Amount	$ 0	$ 0