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Net Income (Loss) Per Share (Tables) | 6 Months Ended
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Jun. 30, 2023
Net Income (Loss) Per Share |
Reconciliation of numerators and denominators of basic and diluted net income per share | A reconciliation of the numerators and denominators of the basic and diluted net income (loss) per share calculations is as follows (in thousands, except per share data):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended | ​
​ | ​ | June 30, | ​ | June 30, | ​
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022 |
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income (loss) attributable to AXT, Inc. | ​ | $ | (5,089) | ​ | $ | 5,546 | ​ | $ | (8,437) | ​ | $ | 8,711 | ​
Less: Preferred stock dividends | ​ |  | (44) | ​ |  | (44) | ​ |  | (88) | ​ |  | (88) | ​
Net income (loss) available to common stockholders | ​ | $ | (5,133) | ​ | $ | 5,502 | ​ | $ | (8,525) | ​ | $ | 8,623 | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator for basic net income (loss) per share - weighted-average common shares | ​ |  | 42,586 | ​ |  | 42,001 | ​ |  | 42,542 | ​ |  | 41,935 | ​
Effect of dilutive securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Common stock options | ​ |  | — | ​ |  | 284 | ​ |  | — | ​ |  | 379 | ​
Restricted stock awards | ​ |  | — | ​ |  | 226 | ​ |  | — | ​ |  | 272 | ​
Denominator for dilutive net income (loss) per common shares | ​ |  | 42,586 | ​ |  | 42,511 | ​ |  | 42,542 | ​ |  | 42,586 | ​
Net income (loss) attributable to AXT, Inc. per common share: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic | ​ | $ | (0.12) | ​ | $ | 0.13 | ​ | $ | (0.20) | ​ | $ | 0.21 | ​
Diluted | ​ | $ | (0.12) | ​ | $ | 0.13 | ​ | $ | (0.20) | ​ | $ | 0.20 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Options excluded from diluted net income (loss) per share as the impact is anti-dilutive | ​ |  | 1,200 | ​ |  | 392 | ​ |  | 1,200 | ​ |  | 220 | ​
Restricted stock excluded from diluted net income (loss) per share as the impact is anti-dilutive | ​ |  | 1,019 | ​ |  | 362 | ​ |  | 1,019 | ​ |  | 352 | ​

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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