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STOCK-BASED COMPENSATION PLANS (Tables) | 12 Months Ended
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Dec. 31, 2022
Share-Based Payment Arrangement [Abstract] |
Schedule of activity related to unvested restricted stock grants | The activity related to the Company's RSUs for the year ended December 31, 2022 was as follows:
| Shares |  | Weighted Average Grant Date Fair Value
Unvested balance at January 1, 2022 | 5,389,611 |  |  | $ | 6.19 |
Granted | 6,096,248 |  |  | $ | 3.09 |
Vested | (3,075,543) |  |  | $ | 5.87 |
Forfeited | (760,569) |  |  | $ | 5.05 |
Unvested balance at December 31, 2022 | 7,649,747 |  |  | $ | 3.96 |
Schedule of activity related to performance stock awards | The activity related to the Company's PSUs for the year ended December 31, 2022 was as follows:
| Shares |  | Weighted Average Grant Date Fair Value
Unvested balance at January 1, 2022 | 4,987,876 |  |  | $ | 2.87 |
Granted | 2,228,073 |  |  | $ | 3.27 |
Vested | (179,184) |  |  | $ | 5.02 |
Forfeited | (383,262) |  |  | $ | 7.82 |
Unvested balance at December 31, 2022 | 6,653,503 |  |  | $ | 2.52 |
Schedule of stock-based compensation expenses which are included in condensed consolidated statement of operations | The consolidated statements of operations included stock-based compensation for the years ended December 31, 2022, 2021 and 2020 as follows (in thousands):
| Year ended December 31,
| 2022 |  | 2021 |  | 2020
Product cost of revenue | $ | 471 |  |  | $ | 313 |  |  | $ | 174 |
Service cost of revenue | 2,157 |  |  | 1,684 |  |  | 701 |
Research and development | 5,108 |  |  | 4,253 |  |  | 2,968 |
Sales and marketing | 6,074 |  |  | 7,218 |  |  | 4,129 |
General and administrative | 4,897 |  |  | 5,950 |  |  | 5,927 |
| $ | 18,707 |  |  | $ | 19,418 |  |  | $ | 13,899 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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