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LIQUIDITY AND CAPITAL RESOURCES (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 11, 2024 USD ($) | Jan. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Jul. 31, 2023 USD ($) | Mar. 31, 2024 USD ($) shares | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) shares | Apr. 30, 2023 USD ($) | Oct. 31, 2022 USD ($) ft²
Liquidity and Capital Resources [Abstract] |  |  |  |  |  |  |  |  |
Cash |  |  | $ 7,575 |  | $ 5,116 |  | $ 7,575 |  |
Accumulated deficit |  |  | (186,981) |  | (193,628) |  | $ (186,981) |  |
Net loss |  |  |  |  | (6,647) | $ (5,416) |  |  |
Net cash used in operating activities |  |  |  |  | (3,747) | (6,049) |  |  |
New Facility Lease [Abstract] |  |  |  |  |  |  |  |  |
Area of premises | ft² |  |  |  |  |  |  |  |  | 45,500
Letter of credit |  |  |  |  |  |  |  |  | $ 4,100
Restricted cash |  |  |  |  |  |  |  |  | $ 4,100
Private Placement Offerings [Abstract] |  |  |  |  |  |  |  |  |
Proceeds received from the convertible notes financing | $ 1,405 |  |  |  | $ 1,405 | $ 0 |  |  |
Convertible Notes [Member] |  |  |  |  |  |  |  |  |
Private Placement Offerings [Abstract] |  |  |  |  |  |  |  |  |
Proceeds received from the convertible notes financing |  | $ 1,400 | $ 16,500 | $ 16,500 |  |  |  |  |
Lincoln Park [Member] |  |  |  |  |  |  |  |  |
New Facility Lease [Abstract] |  |  |  |  |  |  |  |  |
Common stock shares issued and sold (in shares) | shares |  |  |  |  | 0 |  | 214,000 |  |
Gross proceeds from sale of equity |  |  |  |  |  |  | $ 300 |  |
Lincoln Park [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
New Facility Lease [Abstract] |  |  |  |  |  |  |  |  |
Aggregate gross purchase price |  |  |  |  |  |  |  | $ 10,000 |

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