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Net Income (Loss) Per Share (Tables) | 6 Months Ended
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Jun. 30, 2016
Earnings Per Share [Abstract] |
Basic and Diluted Net Income Per Share | The calculation of basic and diluted net (loss) income per share is as follows:
| Three months ended June 30, |  | Six months ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
| (In thousands, except per share data)
Net (loss) income | $ | (1,159 | ) |  | $ | 8,751 |  |  | $ | (1,537 | ) |  | $ | 15,069 |
Weighted-average shares outstanding — basic | 35,987 |  |  | 36,120 |  |  | 35,864 |  |  | 36,072 |
Effect of dilutive securities from stock award plans | — |  |  | 910 |  |  | — |  |  | 915 |
Weighted-average shares outstanding — diluted | $ | 35,987 |  |  | $ | 37,030 |  |  | 35,864 |  |  | 36,987 |
Net (loss) income per share — basic | $ | (0.03 | ) |  | $ | 0.24 |  |  | $ | (0.04 | ) |  | $ | 0.42 |
Net (loss) income per share — diluted | $ | (0.03 | ) |  | $ | 0.24 |  |  | $ | (0.04 | ) |  | $ | 0.41 |
Anti-dilutive weighted-average shares related to stock award plans | 1,961 |  |  | 377 |  |  | 2,037 |  |  | 356 |

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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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