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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Servicing and Repurchase Liabilities) (Details) (USD $)
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Accounting Policies [Abstract]      
Servicing fee received, percentage 1.00%    
Servicing liabilities at fair value     $ 2,500,000
Gain on extinguishment of servicing and repurchase liabilities $ 0 $ 4,426,000 $ 0