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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		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Details
Weighted Average Number of Shares Outstanding, Basic	14,125	14,027	14,113	14,010
Net Income (Loss) Available to Common Stockholders, Basic	$ 13,839	$ 16,176	$ 27,305	$ 27,695
Earnings Per Share, Basic	$ 0.98	$ 1.15	$ 1.93	$ 1.98
Weighted Average Number of Shares Outstanding, Diluted	14,125	14,027	14,113	14,010
Net effect of dilutive stock options - based on the treasurystock method using average market price	153	179	153	179
Weighted Average Number Diluted Shares Outstanding Adjustment	14,278	14,206	14,266	14,189
Net Income (Loss) Available to Common Stockholders, Diluted	$ 13,839	$ 16,176	$ 27,305	$ 27,695
Earnings Per Share, Diluted	$ 0.97	$ 1.14	$ 1.91	$ 1.95

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Represents the Net effect of dilutive stock options - based on the treasurystock method using average market price (number of shares), during the indicated time period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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