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CDI (Details)
$ in Thousands
12 Months Ended
Sep. 30, 2015
USD ($)
branch
Sep. 30, 2014
USD ($)
Sep. 30, 2013
USD ($)
Finite-Lived Intangible Assets [Line Items]      
Number of branches | branch 22    
Amortization of CDI $ 3 $ 116 $ 130