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Note 20: Stock Compensation Plans: Options Granted and Intrinsic Value (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Details
Share Based Compensation Arrangement By Share Based Payment Award Options Granted Number	186,400	186,750	157,800
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 3,100	$ 2,200	$ 3,000
Proceeds from Stock Options Exercised	4,200	2,300	3,300
Share-based Payment Arrangement, Exercise of Option, Tax Benefit	2,700	1,600	2,700
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	11,500	4,700	8,800
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 6,600	$ 3,900	$ 5,700

X

- Definition

Represents the Share Based Compensation Arrangement By Share Based Payment Award Options Granted Number (number of shares), as of the indicated date.

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Amount of tax benefit from exercise of option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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