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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2019
Earnings Per Share [Abstract] |
Computation of earnings per share and reconciliation of basic and diluted weighted average common shares outstanding | The table below presents the computation of EPS, including the reconciliation of basic and diluted weighted average shares outstanding (in thousands, except EPS):
|  | Three Months Ended |  |  |  | Nine Months Ended |  |
|  | September 30, |  |  |  | September 30, |  |
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Net income |  | $ | 79,525 |  |  | $ | 69,261 |  |  | $ | 243,551 |  |  | $ | 217,649 |
Weighted average shares outstanding: |  |  |  |  |  |  |  |
Basic |  | 39,933 |  |  | 40,422 |  |  | 39,750 |  |  | 40,416 |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options and employee stock purchase plan |  | 932 |  |  | 1,375 |  |  | 1,061 |  |  | 1,415 |
Diluted |  | 40,865 |  |  | 41,797 |  |  | 40,811 |  |  | 41,831 |
Earnings per share: |  |  |  |  |  |  |  |
Basic |  | $ | 1.99 |  |  | $ | 1.71 |  |  | $ | 6.13 |  |  | $ | 5.39 |
Diluted |  | $ | 1.95 |  |  | $ | 1.66 |  |  | $ | 5.97 |  |  | $ | 5.20 |
Anti-dilutive stock options excluded from diluted earnings per share computations |  | — |  |  | — |  |  | 1 |  |  | — |

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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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