NOTE 18: Fair Value Measurements: Schedule of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Unrecognized financial instruments (net of contract amount) | Letter of Credit
Financial Instruments Owned Carrying Amount	$ 0	$ 0
Unrecognized financial instruments (net of contract amount) | Line of Credit
Financial Instruments Owned Carrying Amount	0	0
Financial Assets | Cash and Cash Equivalents
Financial Instruments Owned Carrying Amount	26,326	30,786
Financial Assets | Interest-bearing time deposits
Financial Instruments Owned Carrying Amount	1,953	747
Financial Assets | Investment in Federal Home Loan Bank Stock
Financial Instruments Owned Carrying Amount	5,661	3,547
Financial Assets | Investment In Stock Of Federal Reserve Bank Of St Louis
Financial Instruments Owned Carrying Amount	3,566	2,357
Financial Assets | Loans Receivable
Financial Instruments Owned Carrying Amount	1,563,380	1,397,730
Financial Assets | Accrued interest receivable
Financial Instruments Owned Carrying Amount	7,992	6,769
Financial Liabilities | Deposits
Financial Instruments Owned Carrying Amount	1,579,902	1,455,597
Financial Liabilities | Securities Sold under Agreements to Repurchase
Financial Instruments Owned Carrying Amount	3,267	10,212
Financial Liabilities | Federal Home Loan Bank Advances
Financial Instruments Owned Carrying Amount	76,652	43,637
Financial Liabilities | Accrued interest payable
Financial Instruments Owned Carrying Amount	1,206	918
Financial Liabilities | Subordinated Debt
Financial Instruments Owned Carrying Amount	14,945	14,848
Commitments to Extend Credit | Unrecognized financial instruments (net of contract amount)
Financial Instruments Owned Carrying Amount	$ 0
Commitments to Extend Credit | Unrecognized financial instruments (net of contract amount) | Line of Credit
Financial Instruments Owned Carrying Amount		$ 0