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STOCK-BASED COMPENSATION - Fair value assumptions (Details) - Stock options - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
STOCK-BASED COMPENSATION |  |  |  |
Risk-free interest rate | 4.38% | 4.29% | 4.38% | 3.93%
Expected volatility | 128.73% | 75.26% | 128.73% | 79.43%
Expected term | 5 years 3 months 7 days | 5 years 9 months 3 days | 5 years 3 months 7 days | 5 years 8 months 12 days
Expected dividend yield | 0.00% | 0.00% | 0.00% | 0.00%
Fair value, per share | $ 0.84 | $ 6.40 | $ 0.84 | $ 10.17

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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