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Investment Securities (Details Textual) (USD $)
3 Months Ended 6 Months Ended 110 Months Ended
Mar. 31, 2014
Federal Reserve Bank [Member]
Mar. 31, 2013
Non-agency mortgage-backed securities
Mar. 31, 2013
Specifically identified non-agency mortgage-backed securities [Member]
Mar. 31, 2014
Available-for-sale Securities [Member]
Mar. 31, 2013
Available-for-sale Securities [Member]
Mar. 31, 2014
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]            
OTTI impairment recognized in earnings   $ 372,000       $ 2,171,000
Available-for-sale Securities, Amortized Cost Basis     0      
Cash payments received on a security in excess of the security’s book value adjusted for the previously recognized credit portion of OTTI       13,000 0  
Borrowings outstanding under line of credit facility $ 0