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Net Income Per Share - (Tables) | 9 Months Ended
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Sep. 30, 2019
Earnings Per Share [Abstract] |
Basic and Diluted Net Income Per Share | The basic and diluted net income per share calculations for the three and nine months ended September 30, 2019 and 2018 were as follows:
| Three months ended September 30, |  | Nine months ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
| (In thousands, except per share data)
Net income | $ | 19,983 |  |  | $ | 13,628 |  |  | $ | 39,243 |  |  | $ | 22,936 |
Weighted-average shares outstanding — basic | 41,771 |  |  | 39,432 |  |  | 41,283 |  |  | 39,015 |
Effect of dilutive securities from stock award plans | 1,281 |  |  | 1,428 |  |  | 1,513 |  |  | 1,222 |
Weighted-average shares outstanding — diluted | 43,052 |  |  | 40,860 |  |  | 42,796 |  |  | 40,237 |
Net income per share - basic | $ | 0.48 |  |  | $ | 0.35 |  |  | $ | 0.95 |  |  | $ | 0.59 |
Net income per share - diluted | $ | 0.46 |  |  | $ | 0.33 |  |  | $ | 0.92 |  |  | $ | 0.57 |
Anti-dilutive weighted-average shares related to stock award plans | 1,060 |  |  | 673 |  |  | 832 |  |  | 1,176 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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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