Note 14: Disclosures About Fair Value of Financial Instruments: Fair Value Measurement, Policy: Fair Value, Assets and Liabilities Measured on Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Foreclosed Assets Held For Sale
Assets, Fair Value Disclosure, Nonrecurring	$ 2,700	$ 1,604
Loans Receivable Impaired
Assets, Fair Value Disclosure, Nonrecurring	1,573	8,280
Fair Value, Inputs, Level 1 | Foreclosed Assets Held For Sale
Assets, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Inputs, Level 1 | Loans Receivable Impaired
Assets, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Inputs, Level 2 | Foreclosed Assets Held For Sale
Assets, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Inputs, Level 2 | Loans Receivable Impaired
Assets, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Inputs, Level 3 | Foreclosed Assets Held For Sale
Assets, Fair Value Disclosure, Nonrecurring	2,700	1,604
Fair Value, Inputs, Level 3 | Loans Receivable Impaired
Assets, Fair Value Disclosure, Nonrecurring	$ 1,573	$ 8,280