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Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Assets |  |
Short-term investments | $ 0 | $ 100,000
Liabilities |  |
Warrant liability | 7,641 | 81,283
Fair Value, Recurring |  |
Assets |  |
Total assets | 188,287 | 200,972
Liabilities |  |
Total liabilities | 7,662 | 83,241
Level 1 | Fair Value, Recurring |  |
Assets |  |
Available-for-sale investments | 188,287 | 100,972
Level 1 | Fair Value, Recurring | Public Warrants |  |
Liabilities |  |
Warrant liability | 2,845 | 31,034
Level 2 | Fair Value, Recurring |  |
Assets |  |
Short-term investments | 0 | 100,000
Level 3 | Fair Value, Recurring |  |
Liabilities |  |
Earnout Shares liability | 21 | 1,958
Level 3 | Fair Value, Recurring | Private Placement Warrants |  |
Liabilities |  |
Warrant liability | $ 4,796 | $ 50,249

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