STOCK BASED COMPENSATION - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Total stock based compensation expenses | $ 3,999 | $ 1,074 | $ 6,216 | $ 2,333 |
| Research and development | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Total stock based compensation expenses | 1,838 | 569 | 2,755 | 1,283 |
| General and administrative expenses | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Total stock based compensation expenses | 1,355 | 217 | 2,194 | 454 |
| Sales and marketing expense | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Total stock based compensation expenses | 577 | 213 | 921 | 421 |
| Cost of sales | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Total stock based compensation expenses | $ 229 | $ 75 | $ 346 | $ 175 |
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. No definition available.
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