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Equity Incentive Plans and Stock-based Compensation - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Jan. 01, 2026 | Dec. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized compensation expense | $ 9.3 |  |  |
Unrecognized compensation expense, period for recognition (in years) | 2 years 7 months 6 days |  |  |
Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Expected dividend rate (as percent) | 0.00% | 0.00% |  |
Shares available for grant under 2021 Equity Incentive Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares available for grant (in shares) | 33,946,676 |  |  | 29,341,567
Additional shares authorized (in shares) | 18,672,200 |  |  |
Percentage of outstanding stock maximum (as percent) | 5.00% |  |  |
Award expiration period (in years) | 10 years |  |  |
Increase in shares available for grant (in shares) |  |  | 6,323,480 |
Shares available for grant under 2021 Employee Stock Purchase Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares available for grant (in shares) | 6,782,768 |  |  | 5,518,072
Offering purchase period (in months) | 6 months |  |  |
Additional shares authorized (in shares) | 3,734,500 |  |  |
Percentage of outstanding stock maximum (as percent) | 1.00% |  |  |
Increase in shares available for grant (in shares) |  |  | 1,264,696 |
Shares available for grant under 2021 Employee Stock Purchase Plan | Employee Stock Purchase Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation arrangement by share-based payment award, maximum employee subscription rate (as percent) | 15.00% |  |  |
Purchase price of common stock (as percent) | 85.00% |  |  |

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