Note 17: Derivatives and Hedging Activities: Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Rate Swap
Cash Flow Hedges Gain (Loss) Recognized in Accumulated Other Comprehensive Income, Net	$ 9,345
Interest Rate Cap
Cash Flow Hedges Gain (Loss) Recognized in Accumulated Other Comprehensive Income, Net		$ 161	$ 87