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Off-Balance Sheet Financial Instruments and Guarantees (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Sep. 30, 2011
Loss Contingencies [Line Items]    
Financial Instrument Commitments $ 86,655 $ 80,792
Unfunded availability under loan commitments [Member]
   
Loss Contingencies [Line Items]    
Financial Instrument Commitments 38,297 37,649
Unfunded commitments under lines of credit [Member]
   
Loss Contingencies [Line Items]    
Financial Instrument Commitments 37,081 31,183
Standby Letters of Credit [Member]
   
Loss Contingencies [Line Items]    
Financial Instrument Commitments $ 11,277 $ 11,960