Note 7: Investments in Limited Partnerships: Investments in Affordable Housing Partnerships Policy (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Details
Number of Investments in Affordable Housing Partnerships	13	15
Investments in Affordable Housing Partnerships Carrying Value, Net	$ 29,600	$ 34,200
Federal Affordable Housing Tax Credits	38,700
Expected Amortization of Investments in Affordable Housing Partnerships	29,500
Usage of Federal Affordable Housing Tax Credits	6,000	7,100	5,200
Actual Amortization of Investments in Affordable Housing Partnerships	$ 4,700	$ 5,000	$ 4,600