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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock-Based Compensation Expense | Stock-based compensation expense is included in the following line items in the condensed consolidated statements of operations (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Sales and marketing | $ | 1,235 |  |  | $ | 772 |  |  | $ | 2,043 |  |  | $ | 1,529 |
General and administrative | 3,163 |  |  | 2,097 |  |  | 5,243 |  |  | 3,879 |
Research and development | 5,658 |  |  | 4,226 |  |  | 10,658 |  |  | 8,045 |
Total stock-based compensation expense | $ | 10,056 |  |  | $ | 7,095 |  |  | $ | 17,944 |  |  | $ | 13,453 |
The following table summarizes the components of non-cash stock-based compensation expense (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Stock options and assumed options | $ | 1,159 |  |  | $ | 1,015 |  |  | $ | 1,776 |  |  | $ | 1,816 |
Restricted stock units | 8,849 |  |  | 6,048 |  |  | 16,073 |  |  | 11,558 |
Employee stock purchase plan | 48 |  |  | 32 |  |  | 95 |  |  | 79 |
Total stock-based compensation expense | $ | 10,056 |  |  | $ | 7,095 |  |  | $ | 17,944 |  |  | $ | 13,453 |
Tax windfall benefit from stock-based awards | $ | 3,120 |  |  | $ | 1,610 |  |  | $ | 5,680 |  |  | $ | 2,188 |

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + 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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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