Note 11: Income Taxes: Schedule of Effective Income Tax Rate Reconciliation Table (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Tax at statutory rate	35.00%	35.00%	35.00%	35.00%
Nontaxable interest and dividends	(5.20%)	(6.20%)	(3.10%)	(6.80%)
Tax credits	(18.40%)	(2.50%)	(9.30%)	(5.10%)
State taxes	0.80%	0.60%	0.40%	1.10%
Other taxes	(2.30%)	0.70%	(0.10%)	0.60%
Tax percentage rate	9.90%	27.60%	22.90%	24.80%