Note 3: Loans and Allowance For Loan Losses: Troubled Debt Restructurings on Financing Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Troubled Debt Restructurings Total Modifications	$ 21,100	$ 45,000	$ 47,600
Construction And Land Development
Troubled Debt Restructurings Total Modifications	429
Commercial Business
Troubled Debt Restructuring Loans Modified Term	38	1,095	1,150
Troubled Debt Restructurings Total Modifications	38	1,095	1,150
Consumer Loan
Troubled Debt Restructuring Loans Modified Term	59	97	145
Troubled Debt Restructurings Total Modifications	59	97	145
Total Newly Restructured Loans
Troubled Debt Restructuring Loans Interest Only	3,435		814
Troubled Debt Restructuring Loans Modified Term	97	1,714	5,780
Troubled Debt Restructuring Loans Modified Combination		164	223
Troubled Debt Restructurings Total Modifications	3,532	1,878	6,817
Mortgage Loan on Real Estate | One To Four Family Residential
Troubled Debt Restructuring Loans Interest Only	60		308
Troubled Debt Restructuring Loans Modified Term		407	426
Troubled Debt Restructuring Loans Modified Combination		164
Troubled Debt Restructurings Total Modifications	60	571	734
Mortgage Loan on Real Estate | Commercial Real Estate
Troubled Debt Restructuring Loans Interest Only	2,946		506
Troubled Debt Restructuring Loans Modified Term		115	1,928
Troubled Debt Restructurings Total Modifications	$ 2,946	$ 115	2,434
Mortgage Loan on Real Estate | One To Four Family Residential Construction
Troubled Debt Restructuring Loans Modified Combination			223
Troubled Debt Restructurings Total Modifications			223
Mortgage Loan on Real Estate | Subdivision Construction
Troubled Debt Restructuring Loans Modified Term			250
Troubled Debt Restructurings Total Modifications			250
Mortgage Loan on Real Estate | Other Residential
Troubled Debt Restructuring Loans Modified Term			1,881
Troubled Debt Restructurings Total Modifications			$ 1,881