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Income Taxes - Income Taxes Computed Using Federal Income Tax Rate (Detail) (USD $)
12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Income Tax Disclosure [Abstract]      
Amount computed using statutory rate $ (1,798,479) $ (2,473,374) $ (2,666,961)
Net change in valuation allowance for net deferred tax assets 1,677,309 1,968,987 2,247,615
Non-deductible items 411,473 548,839 807,533
State income tax (288,077) (43,376) (392,195)
Income tax provision (benefit) $ 2,226 $ 1,076 $ (4,008)