Note 3: Loans and Allowance For Loan Losses: Troubled Debt Restructured Loans Returned to Accrual Status (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)
Troubled Debt Restructurings Returned to Accrual Status	$ 998
Residential Mortgage
Troubled Debt Restructurings Returned to Accrual Status	629
Commercial Real Estate
Troubled Debt Restructurings Returned to Accrual Status	285
Consumer Loan
Troubled Debt Restructurings Returned to Accrual Status	$ 84