Note 12: Fair Value Measurements: Schedule Of Quantitative Information About Unobservable Inputs Used In Level 3 Fair Value Measurements (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Available for sale Securities (pooled trust preferred security) | Foreclosed and repossessed assets
FairValueMeasurementsLevel3RecurringAndNonrecurring	$ 3,532,000
Available for sale Securities (pooled trust preferred security) | Impaired loans (collateral dependent)
FairValueMeasurementsLevel3RecurringAndNonrecurring	$ 379,000
Available for sale Securities (pooled trust preferred security) | Discount rate | Foreclosed and repossessed assets
Fair Value Measurements Recurring and Nonrecurring Unobservable Inputs	Marketability discount
Available for sale Securities (pooled trust preferred security) | Discount rate | Impaired loans (collateral dependent)
Fair Value Measurements Recurring and Nonrecurring Unobservable Inputs	Discount to reflect realizable value
Available for sale Securities (pooled trust preferred security) | Prepayment rate
Fair Value Measurements Recurring and Nonrecurring Unobservable Inputs	Prepayment rate
Available for sale Securities | Foreclosed and repossessed assets
Fair Value Measurements Recurring and Nonrecurring Valuation Technique	Third party appraisal
Available for sale Securities | Impaired loans (collateral dependent)
Fair Value Measurements Recurring and Nonrecurring Valuation Technique	Internal or third-party appraisal
Available for sale Securities | Discount rate | Foreclosed and repossessed assets
Fair Value Measurements Recurring and Nonrecurring Range of discounts Applied	0.0% - 35.8%
Fair Value Measurements Recurring and Nonrecurring Weighted Average Discount Applied	13.5%
Available for sale Securities | Discount rate | Impaired loans (collateral dependent)
Fair Value Measurements Recurring and Nonrecurring Range of discounts Applied	1.6% - 36.2%
Fair Value Measurements Recurring and Nonrecurring Weighted Average Discount Applied	7.2%
Available for sale Securities | Prepayment rate
Fair Value Measurements Recurring and Nonrecurring Range of discounts Applied	n/a
Fair Value Measurements Recurring and Nonrecurring Weighted Average Discount Applied	1% annually (1)	[1]
Available for sale Securities | Projected defaults | Discounted Cash Flow
Fair Value Measurements Recurring and Nonrecurring Unobservable Inputs	Projected defaults and deferrals (% of pool balance)
Fair Value Measurements Recurring and Nonrecurring Range of discounts Applied	n/a
Fair Value Measurements Recurring and Nonrecurring Weighted Average Discount Applied	39.3%
Available for sale Securities | Anticipated recoveries | Discounted Cash Flow
Fair Value Measurements Recurring and Nonrecurring Unobservable Inputs	Anticipated recoveries (% of pool balance)
Fair Value Measurements Recurring and Nonrecurring Range of discounts Applied	n/a
Fair Value Measurements Recurring and Nonrecurring Weighted Average Discount Applied	4.6%

[1] The Level 3 fair value measurement also assumes that issuers of asset size $15 billion and above will generally prepay during 2013, unless issued at a variable rate with a spread of less than 150 bps over LIBOR; other issuers are expected to prepay at a rate of 1% annually, unless issued at a fixed rate of 8% or more by a bank reasonably expected to be able to prepay.