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, 2019	Mar. 31, 2018
Details
Weighted Average Number of Shares Outstanding, Basic	14,159	14,101
Net Income (Loss) Available to Common Stockholders, Basic	$ 17,612	$ 13,466
Earnings Per Share, Basic	$ 1.24	$ 0.95
Weighted Average Number of Shares Outstanding, Diluted	14,159	14,101
Net effect of dilutive stock options - based on the treasurystock method using average market price	108	131
Weighted Average Number Diluted Shares Outstanding Adjustment	14,267	14,232
Net Income (Loss) Available to Common Stockholders, Diluted	$ 17,612	$ 13,466
Earnings Per Share, Diluted	$ 1.23	$ 0.95