NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Troubled Debt Restructurings on Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Consumer
Troubled Debt Restructuring Loans Interest Only	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring Loans Modified Term	194	18	199	58
Troubled Debt Restructuring Loans Modified Combination	0	0	0	0
Troubled Debt Restructurings Total New Modifications	194	18	199	58
Newly Restructured Modified Loans
Troubled Debt Restructuring Loans Interest Only	0	0	0	3,435
Troubled Debt Restructuring Loans Modified Term	194	18	199	80
Troubled Debt Restructuring Loans Modified Combination	5,759	0	6,033	0
Troubled Debt Restructurings Total New Modifications	5,953	$ 18	6,232	3,515
Commercial Business
Troubled Debt Restructuring Loans Interest Only			0	0
Troubled Debt Restructuring Loans Modified Term			0	22
Troubled Debt Restructuring Loans Modified Combination			274	0
Troubled Debt Restructurings Total New Modifications			274	22
Construction and Land Development
Troubled Debt Restructuring Loans Interest Only				2,946
Troubled Debt Restructuring Loans Modified Term				0
Troubled Debt Restructuring Loans Modified Combination				0
Troubled Debt Restructurings Total New Modifications				2,946
Mortgage Loan On Real Estate | Commercial Real Estate
Troubled Debt Restructuring Loans Interest Only	0		0	60
Troubled Debt Restructuring Loans Modified Term	0		0	0
Troubled Debt Restructuring Loans Modified Combination	5,759		5,759	0
Troubled Debt Restructurings Total New Modifications	$ 5,759		$ 5,759	60
Mortgage Loan On Real Estate | One-to-Four-Family Residential
Troubled Debt Restructuring Loans Interest Only				429
Troubled Debt Restructuring Loans Modified Term				0
Troubled Debt Restructuring Loans Modified Combination				0
Troubled Debt Restructurings Total New Modifications				$ 429