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Stockholders' Equity and Stock Repurchase Program (Tables) | 12 Months Ended
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Dec. 31, 2023
Stockholders' Equity and Stock Repurchase Program |
Schedule of changes in ownership interest in consolidated subsidiaries | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31,
​ |  | 2023 | ​ | 2022
Net income (loss) attributable to AXT, Inc. | ​ | $ | (17,881) |  | $ | 15,811
Decrease in additional paid-in capital for: | ​ |  | ​ | ​ |  | ​
Investment in subsidiary with noncontrolling interest | ​ |  | (308) | ​ |  | (937)
Change from net income (loss) attributable to AXT, Inc., net of transfers to noncontrolling interests | ​ | $ | (18,189) | ​ | $ | 14,874

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