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Equity and Long-term Investments and Fair Value Measurements - Convertible Promissory Note in Lyndra (Details) - Lyndra - Lyndra Convertible Note - USD ($) $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 27, 2025 | Oct. 31, 2025 | Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Convertible notes face value | $ 9.2 |  |
Effective interest rate | 8.00% |  |
Debt instrument maturity date | Nov. 27, 2025 |  |
Debt instrument percentage premium on principal on default |  |  | 20.00%
Equity and long-term investments at fair value |  |  | $ 3.5
Unrealized loss from fair value changes in equity investments |  |  | $ 2.4
Repayments of notes |  | $ 3.3 |
Outstanding principal |  | $ 5.9 |

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