Note 21: Stock Option Plan: Schedule of Share-based Compensation, Stock Options, Activity (Details) - Employee Stock Option - $ / shares	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
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
Exercised
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	(134,263)	(153,287)	(106,367)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 25.403	$ 27.088	$ 19.687
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	(8,453)	(22,022)	(46,818)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 24.941	$ 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)
Shares under option 2013 plan
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options			583,207
Available to Grant From 2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			700,000
Granted From 2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	(129,350)	(147,400)	(116,500)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	129,350	147,400	116,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 49.199	$ 32.450	$ 29.515
Forfeited From Current Plan(s)
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	14,000	10,700
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	(14,000)	(10,700)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 33.389	$ 30.204
Beginning of Period
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			326,622
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options			733,292
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price			$ 24.227
End of Period
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	331,450	446,800	583,500
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	633,732	661,098	699,707
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 31.297	$ 26.560	$ 25.597

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
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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