Note 2: Investments in Securities: Schedule of Available-for-sale Securities Reconciliation (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale Securities, Amortized Cost Basis	$ 211,173
Available for Sale Securities Fair Value	213,872
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Available-for-sale Securities, Amortized Cost Basis	146,491	$ 159,777
Available for Sale Securities Gross Unrealized Gain	1,045	2,038
Available for Sale Securities Gross Unrealized Losses	1,501	601
Available for Sale Securities Fair Value	146,035	161,214
US States and Political Subdivisions Debt Securities
Available-for-sale Securities, Amortized Cost Basis	64,682	72,951
Available for Sale Securities Gross Unrealized Gain	3,163	5,081
Available for Sale Securities Gross Unrealized Losses	8	1
Available for Sale Securities Fair Value	67,837	78,031
Available-for-sale Securities
Available-for-sale Securities, Amortized Cost Basis	211,173	253,575
Available for Sale Securities Gross Unrealized Gain	4,208	10,102
Available for Sale Securities Gross Unrealized Losses	1,509	821
Available for Sale Securities Fair Value	$ 213,872	262,856
US Government Agencies Debt Securities
Available-for-sale Securities, Amortized Cost Basis		20,000
Available for Sale Securities Gross Unrealized Losses		219
Available for Sale Securities Fair Value		19,781
Other securities
Available-for-sale Securities, Amortized Cost Basis		847
Available for Sale Securities Gross Unrealized Gain		2,983
Available for Sale Securities Fair Value		$ 3,830