Note 6: Loans and Allowance For Loan Losses: Troubled Debt Restructurings on Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Troubled Debt Restructurings Total Modifications	$ 44,400	$ 45,000
Total Newly Restructured Loans
Troubled Debt Restructuring Loans Interest Only	3,435
Troubled Debt Restructuring Loans Modified Term	2
Troubled Debt Restructurings Total Modifications	3,437
Mortgage Loan On Real Estate | One-to-Four-Family Residential
Troubled Debt Restructuring Loans Interest Only	429
Troubled Debt Restructurings Total Modifications	429
Mortgage Loan On Real Estate | Commercial Business
Troubled Debt Restructuring Loans Interest Only	60
Troubled Debt Restructurings Total Modifications	60
Mortgage Loan On Real Estate | Construction and Land Development
Troubled Debt Restructuring Loans Interest Only	2,946
Troubled Debt Restructurings Total Modifications	2,946
Mortgage Loan On Real Estate | Consumer Loan
Troubled Debt Restructuring Loans Modified Term	2
Troubled Debt Restructurings Total Modifications	$ 2