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Related Party Transactions: (Details) (USD $)
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Shareholder
     
Related Party Transactions      
Legal fees $ 45,000 $ 110,000 $ 116,000
Individual married to a shareholder and a daughter of Company's Chairman and Chief Executive Officer
     
Related Party Transactions      
Service fees $ 4,000 $ 2,000 $ 0