Note 19: Additional Cash Flow Information: Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Noncash Investing and Financing Activities
Real Estate Acquired Through Foreclosure	$ 23,780	$ 26,076	$ 12,185
Proceeds from Sale of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans	603	3,334	3,316
Conversion of premises and equipment to foreclosed assets	0	6,985	0
Dividends declared but not paid	3,381	3,073	3,055
Additional Cash Payment Information
Interest Paid	27,724	20,476	15,984
Income Taxes Paid	$ 17,563	$ 9,554	$ 13,096