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Stockholders' Equity and Stock Repurchase Program (Tables) | 12 Months Ended
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Dec. 31, 2018
Stockholders' Equity and Stock Repurchase Program |
Schedule of changes in ownership interest in consolidated subsidiaries |
|  | As of December 31,
|  | 2018 |  | 2017
Net income attributable to AXT, Inc. |  | $ | 9,654 |  | $ | 10,148
Changes in paid-in capital for: |  |  |  |  |  |
Sales of subsidiary shares to noncontrollling interest |  |  | — |  |  | 1,765
Purchase of subsidiary shares from noncontrollling interest |  |  | 187 |  |  | —
Net transfers to noncontrolling interests |  |  | 187 |  |  | 1,765
Net income attributable to AXT, Inc., net of transfers to noncontrolling interests |  | $ | 9,841 |  | $ | 11,913

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