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Stockholders' Equity - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2025 | Dec. 31, 2021 | Aug. 31, 2025 | Dec. 31, 2024 | Aug. 02, 2024
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |
Common stock reserved for future issuance (in shares) | 18,336,172 | 18,336,172 |  |  | 19,044,737 |
Share repurchase program, authorized, number of shares |  |  |  | 10,000,000 |  |
Purchase of treasury stock (in shares) |  | 142,069 |  |  |  |
Purchase of treasury stock | $ 1,185 | $ 1,185 |  |  |  |
Remaining authorized, amount | $ 8,800 | $ 8,800 |  |  |  |
2021 Equity Incentive Plan |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |
Minimum annual additional number of shares authorized (in shares) |  |  | 4,784,100 |  |  |
Minimum annual additional number of shares authorized, common stock outstanding (in percent) |  |  | 5.00% |  |  |
2021 Employee Stock Purchase Plan |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |
Minimum annual additional number of shares authorized (in shares) |  |  | 1,913,630 |  |  |
Minimum annual additional number of shares authorized, common stock outstanding (in percent) |  |  | 2.00% |  |  |
Common stock reserved for future issuance (in shares) | 1,721,779 | 1,721,779 |  |  | 965,766 |
2024 Inducement Plan |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |
Common stock reserved for future issuance (in shares) | 38,919 | 38,919 |  |  | 2,000 | 414,740

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