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Net Income Per Share | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Net Income Per Share | Net Income Per Share Basic net income per share is computed using the weighted-average number of common shares outstanding for the period. Diluted net income per share is computed by adjusting the weighted-average number of common shares outstanding for the effect of dilutive potential common shares outstanding during the period. Potential common shares included in the diluted calculation consist of incremental shares issuable upon the exercise of outstanding stock options calculated using the treasury stock method. The following table sets forth the calculation of basic and diluted net income per share (in thousands, except per share amounts):
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Numerator: |  |  |  |  |
Income from continuing operations | $ | 1,592 |  |  | $ | 6,007 |  |  | $ | 8,523 |
Income from discontinued operations, net of income taxes | 1,938 |  |  | 624 |  |  | 2,341 |
Net income | $ | 3,530 |  |  | $ | 6,631 |  |  | $ | 10,864 |
Denominator: |  |  |  |  |
Weighted average common shares—basic | 12,882 |  |  | 13,997 |  |  | 14,722 |
Effect of dilutive securities: stock options | 12 |  |  | — |  |  | — |
Weighted average common shares—diluted | 12,894 |  |  | 13,997 |  |  | 14,722 |
Income per share—basic: |  |  |  |  |
Continuing operations | $ | 0.12 |  |  | $ | 0.43 |  |  | $ | 0.58 |
Discontinued operations | 0.15 |  |  | 0.04 |  |  | 0.16 |
Net income per share—basic | $ | 0.27 |  |  | $ | 0.47 |  |  | $ | 0.74 |
Income per share—diluted: |  |  |  |  |
Continuing operations | $ | 0.12 |  |  | $ | 0.43 |  |  | $ | 0.58 |
Discontinued operations | 0.15 |  |  | 0.04 |  |  | 0.16 |
Net income per share—diluted | $ | 0.27 |  |  | $ | 0.47 |  |  | $ | 0.74 |
For the years ended December 31, 2017, 2016 and 2015, options to purchase 550,000, 600,000 and 775,000 shares of common stock, respectively, were not included in the computation of diluted net income per share because the effect would have been anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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