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Stockholders' Equity and Stock Repurchase Program (Tables) | 12 Months Ended
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Dec. 31, 2022
Stockholders' Equity and Stock Repurchase Program |
Schedule of changes in ownership interest in consolidated subsidiaries | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31,
​ |  | 2022 | ​ | 2021
Net income attributable to AXT, Inc. | ​ | $ | 15,811 |  | $ | 14,575
Decrease in additional paid-in capital for: | ​ |  | ​ | ​ |  | ​
Investment in subsidiary with noncontrolling interest | ​ |  | (937) | ​ |  | —
Purchase of subsidiary shares from noncontrolling interests | ​ | ​ | — | ​ | ​ | (2,691)
Formation of new subsidiary with noncontrolling interests | ​ | ​ | — | ​ | ​ | (262)
Adjustment to noncontrolling interests in connection with the reorganization and alignment of assets under Tongmei | ​ | ​ | — | ​ | ​ | (1,229)
Changes in AXT, Inc.'s ownership interests in consolidated subsidiaries | ​ | ​ | — | ​ | ​ | (1,241)
Net transfers to noncontrolling interests | ​ | ​ | (937) | ​ | ​ | (5,423)
Change from net income attributable to AXT, Inc., net of transfers to noncontrolling interests | ​ | $ | 14,874 | ​ | $ | 9,152
​

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