Note 12: Stock Compensation Plans: Schedule of Activity of the 2006 Plan (Details) (2006 Director Stock Option Plan, USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Minimum
Option Price	1.10	1.16	1.22	1.28
Maximum
Option Price	7.05	3.96	4.16	4.37
Class A Common Stock
Shares, Outstanding	155,257	131,236	100,987	72,178
Stock Granted During Period, Shares, Share-based Compensation	25,000	24,000	24,000
Adjustment for the effect of stock dividends	7,398	6,249	4,809
Shares exercised	(8,377)
Shares Exercisable	139,507
Available for future grants	29,214
Weighted average contractual term of options, years	7.9
Aggregated intrinsic value of options outstanding	971,058