Note 21: Stock Option Plan: Schedule of Stock Options Outstanding and Exercisable (Details) (USD $)	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	733,292
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	5.34
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 24.227
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	432,589
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 26.163
$8.360 to $19.960
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	143,244
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	8.08
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 16.456
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	25,481
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 8.472
$20.120 to $25.000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	304,303
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	6.51
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 22.531
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	121,363
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 21.012
$25.480 to $36.390
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	285,745
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	2.74
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 29.928
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	285,745
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 29.928