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Net Income Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Net Income 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 per share calculations is as follows (in thousands, except per share data):
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
|  | 2018 |  | 2017 |  | 2018 |  | 2017 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to AXT, Inc. |  | $ | 3,901 |  | $ | 1,930 |  | $ | 6,776 |  | $ | 2,595 |
Less: Preferred stock dividends |  |  | (44) |  |  | (44) |  |  | (88) |  |  | (88) |
Net income available to common stockholders |  | $ | 3,857 |  | $ | 1,886 |  | $ | 6,688 |  | $ | 2,507 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic net income per share - weighted-average common shares |  |  | 39,001 |  |  | 38,306 |  |  | 38,970 |  |  | 36,238 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock options |  |  | 1,094 |  |  | 1,212 |  |  | 1,191 |  |  | 1,216 |
Restricted stock awards |  |  | 121 |  |  | 188 |  |  | 128 |  |  | 191 |
Denominator for dilutive net income per common shares |  |  | 40,216 |  |  | 39,706 |  |  | 40,289 |  |  | 37,645 |
Net income attributable to AXT, Inc. per common share: |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.10 |  | $ | 0.05 |  | $ | 0.17 |  | $ | 0.07 |
Diluted |  | $ | 0.10 |  | $ | 0.05 |  | $ | 0.17 |  | $ | 0.07 |
Options excluded from diluted net income per share as the impact is anti-dilutive |  |  | 228 |  |  | 622 |  |  | 186 |  |  | 617 |
Restricted stock excluded from diluted net income per share as the impact is anti-dilutive |  |  | 249 |  |  | — |  |  | 240 |  |  | 5 |

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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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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