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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014
Income Taxes [Line Items] |  |
Net change in total valuation allowance | $ (938,271) | $ 1,677,309
Operating loss carryforwards, expiration start year | 2018 |
Net operating loss carryforwards will begin to expire | 2015 |
Investment credit carryforwards | $ 43,802 | 43,802
Alternative minimum tax credit carryforwards | $ 149,346 | $ 66,320
Research and development credits expiry period beginning year | 2023 |
Accrued interest or penalties | $ 0 |
ID Checker [Member] |  |
Income Taxes [Line Items] |  |
Deferred Tax Benefit | 634,930 |
Federal [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards | 43,915,977 |
Investment credit carryforwards | 29,306 |
State [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards | 33,409,701 |
Research and development credit [Member] | Stock Option [Member] | Federal and state [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards | 17,825,307 |
Research and development credit [Member] | California [Member] |  |
Income Taxes [Line Items] |  |
Research and development credit carryforwards | $ 21,963 |

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