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Fair Value Measurements - Convertible Promissory Note (Details) $ in Thousands | Jun. 30, 2024 USD ($) | May 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | --- | ---
Fair Value Measurements |  |  |
Available-for-sale securities | $ 126,212 |  | $ 158,186
Convertible promissory note | Fair value measured on recurring basis |  |  |
Fair Value Measurements |  |  |
Available-for-sale securities | 5,460 |  | 2,330
Convertible promissory note | Fair value measured on recurring basis | Level 3 |  |  |
Fair Value Measurements |  |  |
Available-for-sale securities | $ 5,460 |  | $ 2,330
Rimere | Risk-free interest rate |  |  |
Fair Value Measurements |  |  |
Convertible Promissory Note, Measurement Input | 5.33 |  | 5.39
Rimere | Credit adjustment |  |  |
Fair Value Measurements |  |  |
Convertible Promissory Note, Measurement Input | 7.32 |  | 5.31
Rimere | Credit adjusted discount rate |  |  |
Fair Value Measurements |  |  |
Convertible Promissory Note, Measurement Input | 12.65 |  | 10.70
Bridge To Renewables, BTR | Fair value measured on recurring basis | Level 3 |  |  |
Fair Value Measurements |  |  |
Available-for-sale securities |  | $ 2,000 |
Bridge To Renewables, BTR | Risk-free interest rate |  |  |
Fair Value Measurements |  |  |
Convertible Promissory Note, Measurement Input | 5.16 |  |
Bridge To Renewables, BTR | Credit adjustment |  |  |
Fair Value Measurements |  |  |
Convertible Promissory Note, Measurement Input | 11.34 |  |
Bridge To Renewables, BTR | Credit adjusted discount rate |  |  |
Fair Value Measurements |  |  |
Convertible Promissory Note, Measurement Input | 16.50 |  |

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