SHAREHOLDERS' (DEFICIT) EQUITY - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
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| Equity [Abstract] | |||
| Stock-based compensation expense recognized | $ 174 | $ (300) | $ 1,000 |
| Unrecognized compensation cost | $ 254 | $ 440 | |
| Unvested stock options (in shares) | 790 | 9,453 | |
| Weighted-average remaining vesting period | 2 years 6 months | 2 years 8 months 12 days | |
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Number of non-vested options outstanding. No definition available.
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