Note 21: Stock Option Plan: Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Options Outstanding | Balance beginning of period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	733,292
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 24.227
Share Based Compensation Stock Options Weighted Average Remaining Contractual Term	5.34
Options Outstanding | Balance end of period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	699,707
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 25.597
Share Based Compensation Stock Options Weighted Average Remaining Contractual Term	5.93
Options Granted
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	119,600
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 29.371
Options Exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	(106,367)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 19.687
Options Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	(46,818)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 27.202
Options Exercisable | Balance end of period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	359,749
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 26.356
Share Based Compensation Stock Options Weighted Average Remaining Contractual Term	3.28