Note 21: Stock Option Plan: Schedule of Share-based Compensation, Stock Options, Activity (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	583,207
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 25.597
Balance beginning of period
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			462,453
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options			743,796
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price			$ 23.592
Options Granted
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		(105,200)	(120,100)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options		105,200	120,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price		$ 24.759	$ 19.349
Options Exercised
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	(106,367)	(116,479)	(25,856)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 19.687	$ 19.488	$ 12.053
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	(46,818)		(4,000)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 27.202		$ 12.898
Options Forfeited From Current Plan(s)
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		64,482	24,987
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options		(64,482)	(24,987)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price		$ 23.168	$ 23.349
Balance end of period
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	583,500	326,622	367,340
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	699,707	733,292	809,053
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 25.597	$ 24.227	$ 23.391
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
Termination of 2003 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	(370,340)
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	(116,500)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	116,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 29.515