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SHARE-BASED COMPENSATION - SCHEDULE OF STOCK-BASED COMPENSATION EXPENSE RECOGNIZED FOR STOCK OPTION GRANTS (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Share-Based Payment Arrangement, Expensed and Capitalized, Amount |  |  |  |  |  |
Stock-based compensation expense | $ 2,003 | $ 3,237 | $ 10,068 | $ 8,655 | $ 11,906 | $ 5,476
Research and Development Expense [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount |  |  |  |  |  |
Stock-based compensation expense | 458 | 1,817 | 4,987 | 4,798 | 6,621 | 2,129
General and Administrative Expense [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount |  |  |  |  |  |
Stock-based compensation expense | $ 1,545 | $ 1,420 | $ 5,081 | $ 3,857 | $ 5,285 | $ 3,347

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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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