Note 5: Other Real Estate Owned: Schedule of major classifications of other real estate owned (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other Real Estate Owned, Net	$ 22,002	$ 32,658
Foreclosed Assets Held For Sale | One To Four Family Residential Construction
Foreclosed Assets	0	0
Foreclosed Assets Held For Sale | Subdivision Construction
Foreclosed Assets	5,413	6,360
Foreclosed Assets Held For Sale | Land Development
Foreclosed Assets	7,229	10,886
Foreclosed Assets Held For Sale | Commercial Construction
Foreclosed Assets	0	0
Foreclosed Assets Held For Sale | One To Four Family Residential
Foreclosed Assets	112	1,217
Foreclosed Assets Held For Sale | Other Residential
Foreclosed Assets	140	954
Foreclosed Assets Held For Sale | Commercial Real Estate
Foreclosed Assets	1,694	3,841
Foreclosed Assets Held For Sale | Commercial Business
Foreclosed Assets	0	0
Foreclosed Assets Held For Sale | Consumer Loan
Foreclosed Assets	1,987	1,991
Foreclosed Assets Held For Sale | Foreclosed Assets Before FDIC Supported Foreclosed Assets
Foreclosed Assets	16,575	25,249
Foreclosed Assets Held For Sale | FDIC Supported Foreclosed Assets Net Of Discounts
Foreclosed Assets	0	1,426
Foreclosed Assets Held For Sale | Acquired foreclosed assets no longer covered by FDIC loss sharing agreements, net of discounts
Foreclosed Assets	2,133	316
Foreclosed Assets Held For Sale | Acquired Loans Not Covered By FDIC Loss Sharing Agreements Net of Discounts
Foreclosed Assets	1,666	1,952
Foreclosed Assets Held For Sale Net
Foreclosed Assets	20,374	28,943
Other real estate owned not acquired through foreclosure
Other Real Estate Owned, Net	$ 1,628	$ 3,715