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Stockholders' Equity - Stock-based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Stock-based Compensation Expense |  |  |  |
Total stock-based compensation expense | $ 52,611 | $ 44,503 | $ 156,721 | $ 128,682
Stock Options |  |  |  |
Stock-based Compensation Expense |  |  |  |
Unrecognized stock-based compensation expense | 5,781 |  | $ 5,781 |
Weighted-average amortization period |  |  | 1 year 8 months 12 days |
RSU (excluding PRSUs) |  |  |  |
Stock-based Compensation Expense |  |  |  |
Unrecognized stock-based compensation expense | 315,047 |  | $ 315,047 |
Weighted-average amortization period |  |  | 2 years 8 months 12 days |
PRSU |  |  |  |
Stock-based Compensation Expense |  |  |  |
Unrecognized stock-based compensation expense | 16,228 |  | $ 16,228 |
Weighted-average amortization period |  |  | 1 year 10 months 24 days |
ESPP |  |  |  |
Stock-based Compensation Expense |  |  |  |
Unrecognized stock-based compensation expense | 557 |  | $ 557 |
Weighted-average amortization period |  |  | 1 month 6 days |
Cost of revenue |  |  |  |
Stock-based Compensation Expense |  |  |  |
Total stock-based compensation expense | 9,856 | 8,329 | $ 29,077 | 24,659
Research and development |  |  |  |
Stock-based Compensation Expense |  |  |  |
Total stock-based compensation expense | 12,980 | 10,603 | 38,375 | 32,567
Sales and marketing |  |  |  |
Stock-based Compensation Expense |  |  |  |
Total stock-based compensation expense | 16,404 | 15,761 | 50,840 | 44,148
General and administrative |  |  |  |
Stock-based Compensation Expense |  |  |  |
Total stock-based compensation expense | $ 13,371 | $ 9,810 | $ 38,429 | $ 27,308

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