Note 21: Stock Option Plan: Schedule of Share-based Compensation, Stock Options, Activity (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 26.560
Options Granted
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			(105,200)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options			105,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price			$ 24.759
Options Exercised
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	(153,287)	(106,367)	(116,479)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 27.088	$ 19.687	$ 19.488
Options Forfeited From Current Plan(s)
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	10,700		64,482
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	(10,700)		(64,482)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 30.204		$ 23.168
Options Granted from 2003 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		(3,100)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options		3,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price		$ 23.957
Options Forfeited From Terminated Plan(s)
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		46,818
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	(22,022)	(46,818)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 27.387	$ 27.202
Termination of 2003 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		(370,340)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options		583,207
Options Available to Grant from 2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		700,000
Options Granted from 2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	(147,400)	(116,500)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	147,400	116,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 32.450	$ 29.515
Balance beginning of period
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			367,340
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options			809,053
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price			$ 23.391
Balance end of period
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	446,800	583,500	326,622
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	661,098	699,707	733,292
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 26.560	$ 25.597	$ 24.227

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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