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Net Income (Loss) Per Share (Tables) | 9 Months Ended
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Sep. 30, 2021
Net Income (Loss) Per Share |
Reconciliation of numerators and denominators of basic and diluted net income (loss) 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 | ​ | Nine Months Ended | ​
​ | ​ | September 30, | ​ | September 30, | ​
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020 |
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income attributable to AXT, Inc. | ​ | $ | 3,800 | ​ | $ | 991 | ​ | $ | 11,610 | ​ | $ | 1,174 | ​
Less: Preferred stock dividends | ​ |  | (44) | ​ |  | (44) | ​ |  | (132) | ​ |  | (132) | ​
Net income available to common stockholders | ​ | $ | 3,756 | ​ | $ | 947 | ​ | $ | 11,478 | ​ | $ | 1,042 | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator for basic net income per share - weighted-average common shares | ​ |  | 41,460 | ​ |  | 40,152 | ​ |  | 41,237 | ​ |  | 39,978 | ​
Effect of dilutive securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Common stock options | ​ |  | 691 | ​ |  | 575 | ​ |  | 887 | ​ |  | 510 | ​
Restricted stock awards | ​ |  | 527 | ​ |  | 252 | ​ |  | 586 | ​ |  | 200 | ​
Denominator for dilutive net income per common shares | ​ |  | 42,678 | ​ |  | 40,979 | ​ |  | 42,710 | ​ |  | 40,688 | ​
Net income attributable to AXT, Inc. per common share: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic | ​ | $ | 0.09 | ​ | $ | 0.02 | ​ | $ | 0.28 | ​ | $ | 0.03 | ​
Diluted | ​ | $ | 0.09 | ​ | $ | 0.02 | ​ | $ | 0.27 | ​ | $ | 0.03 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Options excluded from diluted net income per share as the impact is anti-dilutive | ​ |  | 124 | ​ |  | 1,036 | ​ |  | 21 | ​ |  | 1,298 | ​
Restricted stock excluded from diluted net income per share as the impact is anti-dilutive | ​ |  | 138 | ​ |  | 218 | ​ |  | 112 | ​ |  | 347 | ​

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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