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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Percentage of ownership of equity interest excluding interest in entity that is consolidated and equity method investee.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as noncurrent.

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Amount of investment in equity method investee and investment in and advance to affiliate.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Dividends received on equity and other investments during the current period.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Investments in Privately-Held Raw Material Companies (Details) - USD ($)		1 Months Ended										3 Months Ended		12 Months Ended
	Jan. 25, 2021	May 31, 2024	Nov. 30, 2023	Aug. 31, 2023	May 31, 2023	Apr. 30, 2023	Jan. 31, 2023	Aug. 31, 2022	Jul. 31, 2022	Jun. 30, 2022	Jan. 31, 2021	Mar. 31, 2025	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2024	Sep. 30, 2023	Jul. 31, 2023	Apr. 30, 2022	Jun. 30, 2021
Summary of investments
Investments, equity method												$ 14,642,000			$ 14,066,000
Investments, cost method												551,000			551,000
Other Assets
Summary of investments
Investments, equity method												14,600,000			14,100,000
Emeishan Jia Mei High Purity Metals Co., Ltd Investment
Summary of investments
Investments, cost method												$ 551,000			$ 551,000
Percentage of ownership, equity method					25.00%							10.00%
Percentage of ownership, cost method					10.00%							10.00%			10.00%
Percentage of equity interest sold					15.00%
Proceeds from sale of equity method investments					$ 827,000
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment
Summary of investments
Dividends received										$ 1,300,000
Beijing JiYa Semiconductor Material Co., Ltd Investment
Summary of investments
Investments, equity method												$ 4,995,000			$ 4,867,000
Percentage of ownership, equity method												39.00%			39.00%
Dividends received			$ 500,000			$ 2,000,000		$ 125,000
Xiaoyi XingAn Gallium Co., Ltd.
Summary of investments
Investments, equity method												$ 5,562,000			$ 5,304,000
Percentage of ownership, equity method												25.00%			25.00%
Dividends received		$ 2,100,000	$ 1,800,000			$ 1,800,000			$ 1,500,000
ChaoYang KaiMei Quartz Co., Ltd
Summary of investments
Investments, equity method				$ 600,000			$ 900,000					$ 4,085,000			$ 3,895,000	$ 2,300,000	$ 600,000	$ 3,000,000
Percentage of ownership, equity method												40.00%			40.00%			40.00%
Other \| Other Assets
Summary of investments
Investments, equity method												$ 15,200,000			$ 14,600,000
Nanjing JinMei Gallium Co., Ltd Investment
Summary of investments
Percentage of outstanding shares													8.50%	8.50%
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment
Summary of investments
Percentage of outstanding shares													33.00%	33.00%
Beijing Tongmei Xtal Technology
Summary of investments
Percentage of ownership, consolidated method																			85.50%
Percentage of outstanding shares	7.28%											14.50%
Private equity ownership percentage	7.28%											14.50%
Percentage of key managers and contributors purchased														0.40%
Increase in redeemable noncontrolling interests											$ 1,500,000		$ 48,100,000	$ 48,100,000
Investments, government approved	$ 49,000,000
Nanjing JinMei Gallium Co., Ltd \| Nanjing JinMei Gallium Co., Ltd Investment
Summary of investments
Private equity ownership percentage														0.38%
Nanjing JinMei Gallium Co., Ltd \| Beijing Tongmei Xtal Technology
Summary of investments
Private equity ownership percentage														0.38%
Beijing Boyu Semiconductor Vessel Craftwork Technology Co Ltd \| Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment
Summary of investments
Private equity ownership percentage														7.59%
Beijing Boyu Semiconductor Vessel Craftwork Technology Co Ltd \| Beijing Tongmei Xtal Technology
Summary of investments
Private equity ownership percentage														7.59%
Majority-Owned Subsidiaries
Summary of investments
Investments, consolidated method												$ 14,211,000			14,211,000
Nanjing JinMei Gallium Co., Ltd Investment
Summary of investments
Investments, consolidated method												$ 592,000			$ 592,000
Nanjing JinMei Gallium Co., Ltd Investment \| Nanjing JinMei Gallium Co., Ltd Investment
Summary of investments
Percentage of ownership, consolidated method												85.50%			85.50%
ChaoYang JinMei Gallium Co., Ltd.
Summary of investments
Investments, consolidated method												$ 1,820,000			$ 1,820,000
ChaoYang JinMei Gallium Co., Ltd. \| ChaoYang JinMei Gallium Co., Ltd.
Summary of investments
Percentage of ownership, consolidated method												85.50%			85.50%
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment
Summary of investments
Investments, consolidated method												$ 1,346,000			$ 1,346,000
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment \| Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment
Summary of investments
Percentage of ownership, consolidated method												85.50%			85.50%
ChaoYang ShuoMei High Purity Semiconductor Materials Co., Ltd.
Summary of investments
Investments, consolidated method												$ 3,122,000			$ 3,122,000
Increase in redeemable noncontrolling interests				$ 44,000	$ 75,000		$ 36,000
ChaoYang ShuoMei High Purity Semiconductor Materials Co., Ltd. \| ChaoYang ShuoMei High Purity Semiconductor Materials Co., Ltd.
Summary of investments
Percentage of ownership, consolidated method												75.00%			75.00%
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd.
Summary of investments
Investments, consolidated method												$ 7,331,000			$ 7,331,000
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. \| Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd.
Summary of investments
Percentage of ownership, consolidated method												58.50%			58.50%