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Note 9: Fair Value of Financial Instruments: Schedule of Additional Information About Valuation Techniques and Inputs Used for Assets and Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Dec. 31, 2012
Assets -- Securities available for sale | Private issue CMO
  
Fair Value Measurements, Valuation Techniques Discounted cash flow
Fair Value Measurement Unobservable Inputs Probability of default
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets -- Securities available for sale | Private issue CMO | Probability of default
  
Fair Value Assets and Liabilities as of December 31, 2012 1,156
Fair Value Measurement Weighted Average Range 0.4% – 1.2% (0.9%) [2]
Assets -- Securities available for sale | Private issue CMO | Loss severity
  
Fair Value Measurement Unobservable Inputs Loss severity
Fair Value Measurement Weighted Average Range 15.6% - 37.7% (36.5%) [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets -- Securities available for sale | Private issue CMO | Prepayment Speed
  
Fair Value Measurement Unobservable Inputs Prepayment speed
Fair Value Measurement Weighted Average Range 3.4% - 9.5% (5.4%) [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | Put options
  
Fair Value Assets and Liabilities as of December 31, 2012 47
Fair Value Measurements, Valuation Techniques Relative value analysis
Assets | Commitments to extend credit on loans to be held for sale
  
Fair Value Assets and Liabilities as of December 31, 2012 3,273
Fair Value Measurements, Valuation Techniques Relative value analysis
Assets | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Assets and Liabilities as of December 31, 2012 45
Fair Value Measurements, Valuation Techniques Relative value analysis
Assets | Interest only strips
  
Fair Value Assets and Liabilities as of December 31, 2012 130
Fair Value Measurements, Valuation Techniques Discounted cash flow
Assets | MSA
  
Fair Value Measurements, Valuation Techniques Discounted cash flow
Assets | Non-performing loans
  
Fair Value Measurements, Valuation Techniques Discounted cash flow or aggregated pooling method
Fair Value Measurement Unobservable Inputs Default rates
Assets | Loss severity | Non-performing loans
  
Fair Value Measurement Unobservable Inputs Loss severity
Fair Value Measurement Weighted Average Range 7.2% [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | Prepayment Speed | Interest only strips
  
Fair Value Measurement Unobservable Inputs Prepayment speed (CPR)
Fair Value Measurement Weighted Average Range 0.0% - 43.6% (16.8%) [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | Prepayment Speed | MSA
  
Fair Value Assets and Liabilities as of December 31, 2012 331
Fair Value Measurement Unobservable Inputs Prepayment speed (CPR)
Fair Value Measurement Weighted Average Range 0.0% - 60.0% (29.4%) [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | Default rate | Non-performing loans
  
Fair Value Assets and Liabilities as of December 31, 2012 14,754
Fair Value Measurement Weighted Average Range 26.9% [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | Discount Rate | Interest only strips
  
Fair Value Measurement Unobservable Inputs Discount rate
Fair Value Measurement Weighted Average Range Decrease [2]
Assets | Discount Rate | MSA
  
Fair Value Measurement Unobservable Inputs Discount rate
Fair Value Measurement Weighted Average Range 9.0%-10.5%(8.8%) [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | TBA-MBS broker quotes | Commitments to extend credit on loans to be held for sale
  
Fair Value Measurement Unobservable Inputs TBA-MBS broker quotes
Fair Value Measurement Weighted Average Range 98.1% - 104.5% (102.2%) of par [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | TBA-MBS broker quotes | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Measurement Unobservable Inputs TBA-MBS broker quotes
Fair Value Measurement Weighted Average Range 104.5% - 108.7% (105.9%) of par [2]
Assets | Fallout Ratio | Commitments to extend credit on loans to be held for sale
  
Fair Value Measurement Unobservable Inputs Fall-out ratio (3) [3]
Fair Value Measurement Weighted Average Range 24.4% - 28.7% (28.4%) [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | Investor Quotes | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Measurement Unobservable Inputs Investor quotes
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | Offered Quotes | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Measurement Weighted Average Range 102.1% - 104.3% (103.5%) of par [2]
Assets | TBA-MBS broker quotes | Mandatory loan sale commitments and TBA MBS trades
  
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | Roll Forward Costs | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Measurement Unobservable Inputs Roll-forward costs (4) [4]
Fair Value Measurement Weighted Average Range 0.00% [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Assets | Broker quotes | Put options
  
Fair Value Measurement Unobservable Inputs Broker quotes [4]
Fair Value Measurement Weighted Average Range 106.4% - 106.7% (106.5%) of par [2]
Impact to Valuation From an Increase in Inputs Increase [1]
Liabilities | Commitments to extend credit on loans to be held for sale
  
Fair Value Assets and Liabilities as of December 31, 2012 35
Fair Value Measurements, Valuation Techniques Relative value analysis
Liabilities | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Assets and Liabilities as of December 31, 2012 116
Fair Value Measurements, Valuation Techniques Relative value analysis
Liabilities | TBA-MBS broker quotes | Commitments to extend credit on loans to be held for sale
  
Impact to Valuation From an Increase in Inputs Decrease [1]
Liabilities | TBA-MBS broker quotes | Mandatory loan sale commitments and TBA MBS trades
  
Impact to Valuation From an Increase in Inputs Decrease [1]
Liabilities | Fallout Ratio | Commitments to extend credit on loans to be held for sale
  
Fair Value Measurement Unobservable Inputs Fall-out ratio (3) [3]
Fair Value Measurement Weighted Average Range 24.4% - 28.7% (28.4%) [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
Liabilities | Investor Quotes | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Measurement Unobservable Inputs Investor quotes
Impact to Valuation From an Increase in Inputs Decrease [1]
Liabilities | Offered Quotes | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Measurement Weighted Average Range 102.1% - 103.9% (102.7%) of par [2]
Liabilities | TBA-MBS broker quotes | Commitments to extend credit on loans to be held for sale
  
Fair Value Measurement Unobservable Inputs TBA-MBS broker quotes
Fair Value Measurement Weighted Average Range 100.5% - 104.4% (102.6%) of par [2]
Liabilities | TBA-MBS broker quotes | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Measurement Unobservable Inputs TBA-MBS broker quotes
Fair Value Measurement Weighted Average Range 104.5% - 108.6% (106.2%) of par [2]
Liabilities | Roll Forward Costs | Mandatory loan sale commitments and TBA MBS trades
  
Fair Value Measurement Unobservable Inputs Roll-forward costs (4) [4]
Fair Value Measurement Weighted Average Range 0.00% [2]
Impact to Valuation From an Increase in Inputs Decrease [1]
[1] Unless otherwise noted, this column represents the directional change in the fair value of the Level 3 investments that would result from an increase to the corresponding unobservable input. A decrease to the unobservable input would have the opposite effect. Significant changes in these inputs in isolation could result in significantly higher or lower fair value measurements.
[2] The range is based on the historical estimated fair values and management estimates.
[3] A percentage of commitments to extend credit on loans to be held for sale which management has estimated may not fund.
[4] An estimated cost to roll forward the mandatory loan sale commitments which management has estimated may not be delivered to the corresponding investors in a timely manner.