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STOCK-BASED COMPENSATION (Tables) | 3 Months Ended
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Mar. 31, 2021
Share-based Payment Arrangement [Abstract] |
Summary of stock based compensation expense | Expense
|  |  | Three Months Ended March 31,
(in thousands) |  |  |  |  | 2021 |  | 2020
Cost of revenue |  |  |  |  | $ | 5,925 |  |  | $ | 5,152 |
Selling and marketing |  |  |  |  | 13,720 |  |  | 9,718 |
Research and development |  |  |  |  | 6,770 |  |  | 5,496 |
General and administrative |  |  |  |  | 3,685 |  |  | 2,809 |
|  |  |  |  | $ | 30,100 |  |  | $ | 23,175 |
Income tax benefit |  |  |  |  | $ | (5,991) |  |  | $ | (4,582) |
Summary of stock based compensation award granted | Grants
| Three Months Ended March 31, 2021
(in thousands) | Shares |  | Total Fair Value
RSUs | 684 |  |  | $ | 89,291 |
Non-qualified stock options | 1,248 |  |  | $ | 47,380 |

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