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INCOME TAXES - Additional Information (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Deferred Income Taxes [Line Items] |  |
Federal and net operating loss carryforward | $ 84,283,000 |
State net operating loss carryforward | 35,836,000 |
Federal research and development credits | 1,104,000 |
State investment tax credits | 416,000 |
Increased in valuation allowance | 1,431,000 | $ 3,505,000
Maximum |  |
Deferred Income Taxes [Line Items] |  |
Operating loss carryforwards limitations on use amount | 1,103,000 |
Minimum |  |
Deferred Income Taxes [Line Items] |  |
Operating loss carryforwards limitations on use amount | $ 94,000 |

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