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Equity Incentive Plans and Stock-based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unrecognized compensation expense | $ 7.7 |
Unrecognized compensation expense, period for recognition (in years) | 2 years 2 months 12 days |
Intrinsic value of options exercised | $ 0.1 | $ 1.3
Weighted average grant date fair value (in dollars per share) | $ 0.82 | $ 2.16
Options |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Expected dividend rate (as percent) | 0.00% | 0.00%
2021 Equity Incentive Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options available for grant (in shares) | 29,341,567 | 23,784,439
Additional shares authorized (in shares) | 18,672,200 |
Percentage of outstanding stock maximum | 5.00% |
Award expiration period (in years) | 10 years |
2021 Employee Stock Purchase Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options available for grant (in shares) | 5,518,072 | 4,508,360
Offering purchase period (in months) | 6 months |
Additional shares authorized (in shares) | 3,734,500 |
Percentage of outstanding stock maximum | 1.00% |
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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