Note 16: Disclosures About Fair Value of Financial Instruments: Fair Value, Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Assets, Fair Value Disclosure, Recurring	$ 146,035	$ 161,214
US States and Political Subdivisions Debt Securities
Assets, Fair Value Disclosure, Recurring	67,837	78,031
Interest Rate Swap Asset
Assets, Fair Value Disclosure, Recurring	1,663	2,711
Interest Rate Swap Liability
Assets, Fair Value Disclosure, Recurring	$ (1,699)	(2,725)
US Government Agencies Debt Securities
Assets, Fair Value Disclosure, Recurring		19,781
Other securities
Assets, Fair Value Disclosure, Recurring		$ 3,830