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INCOME TAXES - Additional Information (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) Ownership | Dec. 31, 2020 USD ($) | May 16, 2017 USD ($) | Jan. 17, 2017 USD ($)
Operating Loss Carryforwards [Line Items] |  |  |  |
Income tax expense | $ 0 |  |  |
Effective tax rate percent | 0.00% | 0.00% |  |
Statutory tax rate | 21.00% | 21.00% |  |
Deferred tax assets valuation allowance increased | $ 18,348,000 | $ 3,729,000 |  |
Ownership change percentage testing period | 3 years |  |  |
Ownership change, description | ownership change occurs when certain shareholders increase their aggregated ownership by more than 50 percentage points over their lowest ownership percentage in a testing period (typically three years). |  |  |
Number of consecutive ownership changes | Ownership | 2 |  |  |
Ownership changes date, one | Jan. 17, 2017 |  |  |
Ownership changes date, two | May 16, 2017 |  |  |
Amount of annual limitation of net operating loss and tax credit carryforwards due to ownership change |  |  | $ 3,008,000 | $ 865,000
Ownership changes analysis expected to be completed year | 2022 |  |  |
Unrecognized tax benefits | $ 0 | 0 |  |
Income tax effects recognized | $ 0 | 0 |  |
Percentage of cash payment in research and development tax credit | 65.00% |  |  |
Research and development tax credit receivables | $ 196,000 | 467,000 |  |
Research and Development |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Exchange program recognized net benefits | 103,000 | 131,000 |  |
Federal And State Net Operating Losses |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Income tax expense | $ 0 | $ 0 |  |
Federal Net Operating Loss |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Amount of estimated net operating loss and tax credit carryforwards will expire before utilization due to ownership change |  |  |  | 3,125,000
Federal Research and Development |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Amount of estimated net operating loss and tax credit carryforwards will expire before utilization due to ownership change |  |  |  | $ 249,000

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