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v3.25.2

Stock-based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Stock-based Compensation |  |  |  |
Weighted-average grant-date per share fair values granted (in USD per share) | $ 0.42 | $ 1.45 | $ 1.36 | $ 4.29
Stock-based options forfeited (in shares) | 3,037,128 |  | 2,078,034 |
Future compensation cost for awards not vested | $ 3.1 |  | $ 7.2 |
Weighted-average period compensation cost of unvested awards to be expensed (in years) | 2 years 1 month 6 days |  | 2 years 6 months |
2014 Stock Incentive Plan |  |  |  |
Stock-based Compensation |  |  |  |
Terms (in years) | 10 years |  | 10 years |
Vesting period (in years) | 4 years |  | 4 years |
Shares available for issuance (in shares) | 7,700,000 |  | 4,800,000 |
2014 Employee Stock Purchase Plan |  |  |  |
Stock-based Compensation |  |  |  |
Shares available for issuance (in shares) | 200,000 |  | 200,000 |
Discount to the market price (as a percent) | 0.15% |  | 15.00% |
Cash Preservation Plan, 2025 |  |  |  |
Stock-based Compensation |  |  |  |
Stock-based options forfeited (in shares) | 3,000,000 |  |  |
Stock options | 2017 Stock Incentive Plan |  |  |  |
Stock-based Compensation |  |  |  |
Terms (in years) | 10 years |  | 10 years |
Vesting period (in years) | 4 years |  | 4 years |

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