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FAIR VALUE (Quantitative Inputs and Assumptions Used in Determining the Fair Value of Items Categorized in Level 3) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Mar. 31, 2013
Sep. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, fair value $ 24,411 $ 19,468
Constant default rate (in hundredths) 2.00%  
Loss severity rate (in hundredths) 30.00%  
Reinvestment price on collateral (in hundredths) 100.00%  
Collateralized Debt Obligations [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, fair value $ 5,661 $ 3,771
Prepayment Year One [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Constant prepayment rate (in hundredths) 40.00%  
Prepayment Year Two [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Constant prepayment rate (in hundredths) 30.00%  
Prepayment Thereafter [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Constant prepayment rate (in hundredths) 25.00%  
Minimum [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Discount rates (in hundredths) 13.50%  
Maximum [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Discount rates (in hundredths) 20.00%