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Net Income Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Reconciliation used in Computing Basic and Diluted Net Income per Share | The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share:
| Years Ended December 31,
| 2017 |  | 2016 |  | 2015
| (In thousands, except per share amounts)
Numerator: |  |  |  |  |
Income (loss) from continuing operations | $ | (45,291 | ) |  | $ | (40,030 | ) |  | $ | 2,858 |
Income from discontinued operations, net of tax | $ | — |  |  | $ | 649 |  |  | $ | — |
Net income (loss) used in computing basic net income (loss) per share | $ | (45,291 | ) |  | $ | (39,381 | ) |  | $ | 2,858 |
Denominator: |  |  |  |  |
Shares used in computation of basic net income (loss) per share (weighted average common shares outstanding) | 29,179 |  |  | 28,759 |  |  | 28,097 |
Dilutive potential common shares: |  |  |  |  |
Stock options, ESPP, Restricted Stock and RSUs | — |  |  | — |  |  | 918 |
Shares used in computation of diluted net income (loss) per share | 29,179 |  |  | 28,759 |  |  | 29,015 |
Basic net income (loss) per share: |  |  |  |  |
Continuing Operations | $ | (1.55 | ) |  | $ | (1.39 | ) |  | $ | 0.10 |
Discontinued Operations | $ | — |  |  | $ | 0.02 |  |  | $ | 0.00 |
Total | $ | (1.55 | ) |  | $ | (1.37 | ) |  | $ | 0.10 |
Diluted net income (loss) per share: |  |  |  |  |
Continuing Operations | $ | (1.55 | ) |  | $ | (1.39 | ) |  | $ | 0.10 |
Discontinued Operations | $ | — |  |  | $ | 0.02 |  |  | $ | 0.00 |
Total | $ | (1.55 | ) |  | $ | (1.37 | ) |  | $ | 0.10 |
Schedule of antidilutive securities excluded from computation of earnings per share | As of December 31, 2017 and 2016, the Company had securities outstanding that could potentially dilute basic earnings per share in the future, but these were excluded from the computation of diluted net loss per share for the year ended December 31, 2017 and 2016, since their effect would have been anti-dilutive. These outstanding securities consisted of the following:
| December 31,
| 2017 |  | 2016
Standard and market condition stock options outstanding | 3,550,072 |  |  | 3,646,121 |
Restricted stock awards outstanding | 44,538 |  |  | 77,540 |
RSUs outstanding | 508,880 |  |  | 427,192 |
ESPP | 14,425 |  |  | 17,506 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + 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 (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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