NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Financing Receivable, Troubled Debt Restructuring (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Consumer
Troubled Debt Restructuring Loans Interest Only	$ 0	$ 0
Troubled Debt Restructuring Loans Modified Term	27	152
Troubled Debt Restructuring Loans Modified Combination	0	0
Troubled Debt Restructurings Total New Modifications	$ 27	152
One-to-Four-Family Residential
Troubled Debt Restructuring Loans Interest Only		1,348
Troubled Debt Restructuring Loans Modified Term		0
Troubled Debt Restructuring Loans Modified Combination		0
Troubled Debt Restructurings Total New Modifications		1,348
Newly Restructured Modified Loans
Troubled Debt Restructuring Loans Interest Only		1,348
Troubled Debt Restructuring Loans Modified Term		152
Troubled Debt Restructuring Loans Modified Combination		0
Troubled Debt Restructurings Total New Modifications		$ 1,500