SHARE BASED COMPENSATION - Fair value of options granted (Details) - Employee Stock Option - $ / shares |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2021 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||||||
| Fair value per ordinary share at grant date | $ 0.2677 | $ 0.2184 | $ 0.008 | |||||
| Exercise price | $ 0.4 | $ 1.1853 | $ 0.00001 | $ 0.00001 | $ 0.00001 | |||
| Expected volatility | 55.00% | 55.00% | 39.00% | 39.00% | 39.00% | 40.00% | ||
| Contractual life | 10 years | 10 years | 10 years | 10 years | 10 years | 10 years | 10 years | 10 years |
| Risk free interest rate | 4.58% | 0.88% | ||||||
| Expected dividend | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
| Minimum | ||||||||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||||||
| Fair value per ordinary share at grant date | $ 0.274 | $ 0.147 | $ 0.034 | $ 0.019 | $ 0.008 | |||
| Exercise price | $ 0.00001 | $ 0.0001 | $ 0.00001 | |||||
| Expected volatility | 37.00% | 35.00% | ||||||
| Risk free interest rate | 3.00% | 3.10% | 3.00% | 2.30% | 2.50% | 3.00% | ||
| Maximum | ||||||||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||||||
| Fair value per ordinary share at grant date | $ 0.484 | $ 0.405 | $ 0.059 | $ 0.03 | $ 0.016 | |||
| Exercise price | $ 0.274 | $ 0.2 | $ 0.04 | |||||
| Expected volatility | 39.00% | 38.00% | ||||||
| Risk free interest rate | 3.40% | 3.80% | 3.20% | 3.00% | 3.10% | 3.10% | ||
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Expected term of 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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