Note 13: Disclosures About Fair Value of Financial Instruments: Fair Value Measurement, Policy: Fair Value, Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
US Government Agencies Debt Securities
Assets, Fair Value Disclosure, Recurring	$ 20,019	$ 19,781
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Assets, Fair Value Disclosure, Recurring	146,353	161,214
US States and Political Subdivisions Debt Securities
Assets, Fair Value Disclosure, Recurring	71,828	78,031
Interest Rate Swap Asset
Assets, Fair Value Disclosure, Recurring	5,229	2,711
Interest Rate Swap Liability
Assets, Fair Value Disclosure, Recurring	(5,595)	(2,725)
Equity Securities
Assets, Fair Value Disclosure, Recurring		3,830
Fair Value, Inputs, Level 2 | US Government Agencies Debt Securities
Assets, Fair Value Disclosure, Recurring	20,019	19,781
Fair Value, Inputs, Level 2 | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Assets, Fair Value Disclosure, Recurring	146,353	161,214
Fair Value, Inputs, Level 2 | US States and Political Subdivisions Debt Securities
Assets, Fair Value Disclosure, Recurring	71,828	78,031
Fair Value, Inputs, Level 2 | Interest Rate Swap Asset
Assets, Fair Value Disclosure, Recurring	5,229	2,711
Fair Value, Inputs, Level 2 | Interest Rate Swap Liability
Assets, Fair Value Disclosure, Recurring	$ (5,595)	$ (2,725)