Note 4: Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Details
Weighted Average Number of Shares Outstanding, Basic	13,899	13,790	13,900	13,790
NET INCOME AVAILABLE TO COMMON SHAREHOLDERS	$ 12,534	$ 11,858	$ 22,327	$ 23,366
BASIC EARNINGS PER COMMON SHARE	$ 0.90	$ 0.86	$ 1.61	$ 1.69
Weighted Average Number of Shares Outstanding, Diluted	13,899	13,790	13,900	13,790
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities	$ 121	$ 189	$ 124	$ 189
Weighted Average Number Diluted Shares Outstanding Adjustment	14,020	13,979	14,024	13,979
Net Income (Loss) Available to Common Stockholders, Diluted	$ 12,534	$ 11,858	$ 22,327	$ 23,366
DILUTED EARNINGS PER COMMON SHARE	$ 0.89	$ 0.85	$ 1.59	$ 1.67