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SHARE-BASED COMPENSATION - Summary of Stock options activity (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Number of units |  |  |
Outstanding at the beginning | 1,006,000 | 1,025,000 |
Granted |  | 43,000 |
Exercised | (6,000) | (6,000) |
Forfeited |  | (56,000) |
Outstanding at the end | 1,000,000 | 1,006,000 | 1,025,000
Exercisable | 90,000 | 96,000 |
Weighted Average Exercise Price Per Unit |  |  |
Outstanding at the beginning (in dollars per share) | $ 41.35 | $ 40.59 |
Granted (in dollars per share) |  | 22.94 |
Exercised (in dollars per share) | 16.01 | 16.01 |
Forfeited (in dollars per share) |  | 16.01 |
Outstanding at the end (in dollars per share) | 41.51 | 41.35 | $ 40.59
Exercisable (in dollars per share) | 44.00 | 42.18 |
Weighted Average Grant Date Fair Value Per Unit |  |  |
Outstanding at the beginning (in dollars per share) | 5.22 | 4.99 |
Granted (in dollars per share) |  | 15.32 |
Exercised (in dollars per share) | 8.57 | 8.57 |
Forfeited (in dollars per share) |  | 8.57 |
Outstanding at the end (in dollars per share) | 5.20 | 5.22 | $ 4.99
Exercisable (in dollars per share) | $ 4.49 | $ 4.76 |
Weighted Average Remaining Contractual Life and Aggregate Intrinsic Value |  |  |
Outstanding (in years) | 8 years 10 days | 8 years 3 months 10 days | 9 years 5 months 8 days
Granted (in years) |  | 4 years 8 months 12 days |
Exercisable (in years) | 8 years 5 months 8 days | 8 years 5 months 8 days |
Non-vested shares | 910,000 |  |
Unrecognized compensation expense | $ 4,332 |  |
Unrecognized compensation expense, recognition period | 8 years |  |
Share based compensation expense | $ 147 | $ 126 |

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- Definition Weighted average remaining contractual term for option awards granted in period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(03) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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