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Investments and Fair Value Measurements - Investment Category and Length (Details) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 31, 2023 USD ($) | Mar. 31, 2025 USD ($) company | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) company
Investments in Privately Held Raw Material Companies |  |  |  |
Investments, equity method |  | $ 14,642,000 |  | $ 14,066,000
Number of equity method investments | company |  | 3 |  | 3
Investments, cost method |  | $ 551,000 |  | $ 551,000
Investments Excluding Beijing JiYa Semiconductor Material Co., Ltd. |  |  |  |
Investments in Privately Held Raw Material Companies |  |  |  |
Impairment charge on equity investee |  | 0 | $ 0 |
Emeishan Jia Mei High Purity Metals Co., Ltd Investment |  |  |  |
Investments in Privately Held Raw Material Companies |  |  |  |
Realized gain on adjustment of fair value of investment |  | $ 383,000 |  |
Percentage of ownership, equity method | 25.00% | 10.00% |  |
Percentage of ownership, cost method | 10.00% | 10.00% |  | 10.00%
Investments, cost method |  | $ 551,000 |  | $ 551,000
Proceeds from sale of equity method investments | $ 827,000 |  |  |
Gain (loss) recognized on sale |  | 575,000 |  |
Other Assets |  |  |  |
Investments in Privately Held Raw Material Companies |  |  |  |
Investments, equity method |  | 14,600,000 |  | $ 14,100,000
Other noncurrent assets | Emeishan Jia Mei High Purity Metals Co., Ltd Investment |  |  |  |
Investments in Privately Held Raw Material Companies |  |  |  |
Investments, cost method |  | $ 551,000 |  |

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