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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Share Reconciliation | Basic and diluted EPS calculations are detailed as follows (in thousands, except per share data):
|  | Three Months Ended June 30, 2018 |
|  | Net Income (Numerator) |  |  | Weighted- Average Shares (Denominator) |  |  | Per Share Amount |
Net income per basic common share |  | $ | 155,677 |  |  |  | 77,833 |  |  | $ | 2.00 |
Effect of dilutive stock option, restricted stock, performance stock unit and restricted stock unit securities |  |  | — |  |  |  | 605 |  |  |  | (0.02 | )
Net income per diluted common share |  | $ | 155,677 |  |  |  | 78,438 |  |  | $ | 1.98 |
|  | Three Months Ended July 1, 2017 |
|  | Net Income (Numerator) |  |  | Weighted- Average Shares (Denominator) |  |  | Per Share Amount |
Net income per basic common share |  | $ | 131,822 |  |  |  | 79,979 |  |  | $ | 1.65 |
Effect of dilutive stock option, restricted stock, performance stock unit and restricted stock unit securities |  |  | — |  |  |  | 777 |  |  |  | (0.02 | )
Net income per diluted common share |  | $ | 131,822 |  |  |  | 80,756 |  |  | $ | 1.63 |
|  | Six Months Ended June 30, 2018 |
|  | Net Income (Numerator) |  |  | Weighted- Average Shares (Denominator) |  |  | Per Share Amount |
Net income per basic common share |  | $ | 267,628 |  |  |  | 78,330 |  |  | $ | 3.42 |
Effect of dilutive stock option, restricted stock, performance stock unit and restricted stock unit securities |  |  | — |  |  |  | 711 |  |  |  | (0.03 | )
Net income per diluted common share |  | $ | 267,628 |  |  |  | 79,041 |  |  | $ | 3.39 |
|  | Six Months Ended July 1, 2017 |
|  | Net Income (Numerator) |  |  | Weighted- Average Shares (Denominator) |  |  | Per Share Amount |
Net income per basic common share |  | $ | 237,379 |  |  |  | 80,029 |  |  | $ | 2.97 |
Effect of dilutive stock option, restricted stock, performance stock unit and restricted stock unit securities |  |  | — |  |  |  | 740 |  |  |  | (0.03 | )
Net income per diluted common share |  | $ | 237,379 |  |  |  | 80,769 |  |  | $ | 2.94 |

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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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