STOCK BASED COMPENSATION - Stock-based activities (Details) - ADSs - $ / shares |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Dec. 31, 2024 |
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| ADS Underlying Options | |||
| Outstanding at beginning of the period | 1,440,664 | ||
| Outstanding at end of the period | 1,108,159 | 1,440,664 | |
| Weighted Average Exercise Price | |||
| Outstanding at beginning of the period | $ 16.8 | ||
| Outstanding at the end of the period | $ 21.92 | $ 16.8 | |
| Amended plan | |||
| ADS Underlying Options | |||
| Outstanding at beginning of the period | 55,541 | ||
| Granted | 155,983 | 0 | |
| Canceled | (10,897) | ||
| Outstanding at end of the period | 200,627 | 55,541 | |
| Exercisable options (in shares) | 2,049 | ||
| Weighted Average Exercise Price | |||
| Outstanding at beginning of the period | $ 150.47 | ||
| Granted | 9.07 | ||
| Canceled | 74.19 | ||
| Outstanding at the end of the period | 44.68 | $ 150.47 | |
| Exercisable options (in dollars per share) | $ 2,338.08 | ||
| Weighted Average Contractual Terms | |||
| Contractual term (in years) | 9 years 7 months 2 days | 9 years 9 months 3 days | |
| Exercisable options (in years) | 6 years 4 months 24 days | ||
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- References No definition available.
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Gross number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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