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Earnings Per Common Share (Details Textual)
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Earnings Per Common Share (Additional) [Abstract]      
Common stock split conversion ratio 2    
Stock Options [Member]
     
Earnings Per Common Share (Textual) [Abstract]      
Number of Stock options 0 0 126,000