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Stock-based Compensation - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Stock-based compensation |  |  |  |
Stock-based compensation expense |  |  | $ 24,804 | $ 20,134
Proceeds from issuances of common stock from employee stock purchase plan |  |  | 827 | 460
Unrecognized compensation cost related to outstanding options | $ 54,165 |  | $ 54,165 |
Period over which unrecognized compensation cost is expected to be recognized as expense |  |  | 2 years 3 months 18 days |
Restricted stock units |  |  |  |
Stock-based compensation |  |  |  |
Total fair value of shares vested |  |  | $ 31,868 | 16,906
Restricted stock units | RSU granted prior 2024 |  |  |  |
Stock-based compensation |  |  |  |
Vesting period (in years) |  |  | 4 years |
Restricted stock units | RSU granted after 2024 |  |  |  |
Stock-based compensation |  |  |  |
Vesting period (in years) |  |  | 3 years |
Employee Stock Option [Member] |  |  |  |
Stock-based compensation |  |  |  |
Vesting period (in years) |  |  | 4 years |
Contractual life (in years) |  |  | 10 years |
Period following termination date vested options are exercisable (in months) |  |  | 3 months |
Employee stock purchase plan |  |  |  |
Stock-based compensation |  |  |  |
Purchase price percentage |  |  | 85.00% |
Issuance for employee stock purchase plan, shares |  |  | 35,664 |
Proceeds from issuances of common stock from employee stock purchase plan |  |  | $ 827 |
Employee stock purchase plan compensation expenses | $ 91 | $ 55 | $ 224 | $ 155

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