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Summary of Significant Accounting Policies: (Details 2) (Fair value on a recurring basis, Quoted Price in Active Markets for Identical Assets (Level 1), Money market funds, USD $)
Sep. 30, 2012
Sep. 30, 2011
Fair value on a recurring basis | Quoted Price in Active Markets for Identical Assets (Level 1) | Money market funds
   
Assets    
Cash and cash equivalents $ 40,384,756 $ 40,330,266