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Note 13: Derivatives and Hedging Activities: Nondesignated Hedges (Details) (Interest Rate Swap, Not Designated as Hedging Instrument, USD $) In Millions, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
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Commercial customers |  |
Derivative, Notional Amount | $ 131.8 | $ 114.0
Third parties |  |
Derivative, Notional Amount | $ 131.8 | $ 114.0

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant