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Note 7: Investments in Limited Partnerships: Investments in Affordable Housing Partnerships Policy (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Details      
Number of Investments in Affordable Housing Partnerships 15 11  
Investments in Affordable Housing Partnerships Carrying Value, Net $ 34,200,000 $ 33,900  
Federal Affordable Housing Tax Credits 44,700,000    
Expected Amortization of Investments in Affordable Housing Partnerships 34,300,000    
Usage of Federal Affordable Housing Tax Credits 7,100,000 5,200,000 2,600,000
Actual Amortization of Investments in Affordable Housing Partnerships $ 5,000,000 $ 4,600,000 $ 1,900,000