STOCK-BASED COMPENSATION (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Stock-based compensation expense related to stock-based awards | |||
| Total stock-based compensation expense | $ 9,486 | $ 7,295 | $ 9,115 |
| Incremental stock-based compensation expense | 400 | ||
| Selling, general and administrative | |||
| Stock-based compensation expense related to stock-based awards | |||
| Total stock-based compensation expense | 7,337 | 5,223 | 6,453 |
| Research and development expense | |||
| Stock-based compensation expense related to stock-based awards | |||
| Total stock-based compensation expense | 1,700 | $ 2,072 | $ 2,662 |
| Restructuring charges | |||
| Stock-based compensation expense related to stock-based awards | |||
| Total stock-based compensation expense | 449 | ||
| Incremental stock-based compensation expense | $ 400 | ||
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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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- Definition An excess of the fair value of the modified award over the fair value of the award immediately before the modification. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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