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Net income per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Net income per Share [Abstract] |
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 per share calculations is as follows (in thousands, except per share data):
| Years Ended December 31,
| 2012 | 2011 | 2010
Numerator: |  |  |
Net income attributable to AXT, Inc | $ 3,110 | $20,320 | $18,653
Less: Preferred stock dividends | (177) | (177) | (177)
Net income to common stockholders | $ 2,933 | $20,143 | $18,476
Denominator: |  |  |
Denominator for basic net income per share—weighted average common shares | 32,144 | 31,872 | 31,008
Effect of dilutive securities: |  |  |
Common stock options | 689 | 1,093 | 1,380
Restricted stock awards | 32 | 96 | 124
Denominator for dilutive net income per share | 32,865 | 33,061 | 32,512
Basic net income per share: |  |  |
Net income attributable to AXT, Inc | $0.10 | $0.64 | $0.60
Net income to common stockholders | $0.09 | $0.63 | $0.60
Diluted net income per share: |  |  |
Net income attributable to AXT, Inc | $0.09 | $0.61 | $0.57
Net income to common stockholders | $0.09 | $0.61 | $0.57
Options excluded from diluted net income per share as the impact is anti-dilutive | 1,056 | 478 | 14
Restricted stock excluded from diluted net income per share as the impact is anti-dilutive | 13 | 116 | 127

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- Definition Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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