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Cash, Restricted Cash, Cash Equivalents and Investments - Investment Category and Length (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) company | Dec. 31, 2023 USD ($) company
Available-for-Sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure |  |
Fair value, in loss position greater than twelve months |  | $ 2,140
Gross unrealized (loss), in loss position greater than twelve months |  | (20)
Fair value, total in loss position |  | 2,140
Gross unrealized (loss), total in loss position |  | (20)
Investments in Privately Held Raw Material Companies |  |
Investments, equity method | $ 14,066 | $ 12,476
Number of equity method investments | company | 3 | 3
Certificates of Deposit |  |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure |  |
Fair value, in loss position greater than twelve months |  | $ 2,140
Gross unrealized (loss), in loss position greater than twelve months |  | (20)
Fair value, total in loss position |  | 2,140
Gross unrealized (loss), total in loss position |  | (20)
Other Assets |  |
Investments in Privately Held Raw Material Companies |  |
Investments, equity method | $ 14,100 | $ 12,500

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