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Goodwill and Intangible Assets (Details Textual) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 388    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 272    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 232    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 181    
Finite-Lived Intangible Assets, Amortization Expense, Year Five 94    
Finite-Lived Intangible Assets, Amortization Expense, after Year Five 10    
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) $ 0 $ 0 $ 3,574