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Income Taxes (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016
Income Tax Disclosure [Abstract] |  |  |
Assumed Tax rate | 21.00% | 34.00% | 34.00%
Net operating loss carryforwards | $ 11,123,000 | $ 14,240,000 | $ 11,223,000
Research and development tax credits | 1,605,000 | 1,344,000 | 1,036,000
Foreign exchange and other | 13,000 | (25,000) | (25,000)
Unpaid charges | 72,000 | 28,000 | 152,000
Intangible asset costs | 28,000 | 51,000 | 57,000
Stock-based compensation | 3,152,000 | 3,394,000 | 2,004,000
Valuation allowance for deferred tax assets | (15,993,000) | (19,032,000) | (14,447,000)
Net deferred tax assets |  |  |

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