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Note 4: Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Details    
Weighted Average Number of Shares Outstanding, Basic 13,994 13,890
NET INCOME AVAILABLE TO COMMON SHAREHOLDERS $ 11,518 $ 9,793
BASIC EARNINGS PER COMMON SHARE $ 0.82 $ 0.71
Weighted Average Number of Shares Outstanding, Diluted 13,994 13,890
Net effect of dilutive stock options - based on the treasury stock method using average market price 171 128
Weighted Average Number Diluted Shares Outstanding Adjustment 14,165 14,018
Net Income (Loss) Available to Common Stockholders, Diluted $ 11,518 $ 9,793
DILUTED EARNINGS PER COMMON SHARE $ 0.81 $ 0.70