Note 6 - Investments in Privately Held Raw Material Companies (Tables)
|
12 Months Ended |
Dec. 31, 2025 |
|---|
| Notes Tables |
|
| Investment [Table Text Block] |
| | | Investment Balance as of | | | | | |
| | | December 31, | | | December 31, | | Accounting | | Ownership * | |
| Company | | 2025 | | | 2024 | | Method | | Percentage | |
| Nanjing JinMei Gallium Co., Ltd. | | $ | 592 | | | $ | 592 | | Consolidated | | | ** 85.5 | % |
| ChaoYang JinMei Gallium Co., Ltd. | | | 1,820 | | | | 1,820 | | Consolidated | | | ** 85.5 | % |
| Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd. | | | 1,346 | | | | 1,346 | | Consolidated | | | ** 85.5 | % |
| ChaoYang ShuoMei High Purity Semiconductor Materials Co., Ltd. | | | 3,122 | | | | 3,122 | | Consolidated | | | **** 75.0 | % |
| ChaoYang XinMei High Purity Semiconductor Materials Co., Ltd. | | | 7,331 | | | | 7,331 | | Consolidated | | | *** 58.5 | % |
| | | $ | 14,211 | | | $ | 14,211 | | | | | |
| | | | | | | | | | | | | |
| Beijing JiYa Semiconductor Material Co., Ltd. | | $ | 4,428 | | | $ | 4,867 | | Equity | | | 39 | % |
| Xiaoyi XingAn Gallium Co., Ltd. | | | 5,827 | | | | 5,304 | | Equity | | | ** 25 | % |
| ChaoYang KaiMei Quartz Co., Ltd. | | | 4,713 | | | | 3,895 | | Equity | | | ***** 40 | % |
| | | $ | 14,968 | | | $ | 14,066 | | | | | |
| | | | | | | | | | | | | |
| Emeishan Jia Mei High Purity Metals Co., Ltd. | | | — | | | | 551 | | Fair value | | | ****** 0 | % |
| | | $ | — | | | $ | 551 | | | | | |
|
| Equity Method Investments, Summarized Income Information [Table Text Block] |
| | | | | | | | | | | | Our share for the | |
| | | Year Ended | | | Year Ended | |
| | | December 31, | | | December 31, | |
| | | 2025 | | | 2024 | | | 2023 | | | 2025 | | | 2024 | | | 2023 | |
| Net revenue | | $ | 32,442 | | | $ | 37,591 | | | $ | 32,544 | | | $ | 10,342 | | | $ | 11,715 | | | $ | 10,033 | |
| Gross profit | | | 6,899 | | | | 17,747 | | | | 11,698 | | | | 2,272 | | | | 5,374 | | | | 3,365 | |
| Operating income | | | 4,139 | | | | 13,780 | | | | 10,115 | | | | 1,292 | | | | 3,889 | | | | 2,724 | |
| Net income | | | 2,179 | | | | 11,944 | | | | 8,681 | | | | 602 | | | | 3,439 | | | | 1,884 | |
|
| Equity Method Investment, Summarized Balance Sheet Information [Table Text Block] |
| | | As of December 31, | |
| | | 2025 | | | 2024 | |
| Current assets | | $ | 37,709 | | | $ | 34,858 | |
| Noncurrent assets | | | 23,345 | | | | 20,975 | |
| Current liabilities | | | 8,121 | | | | 5,602 | |
| Noncurrent liabilities | | | 5,321 | | | | 6,165 | |
|