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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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