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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Reconciliation of basic and diluted earnings per share | The following is a reconciliation of basic and diluted EPS for the years presented in the consolidated statements of income:
|  | Years ended December 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
(In thousands except share and per share data) |  | Net Income |  |  | Weighted Average Shares |  |  | Per Share Amount |  |  | Net Income |  |  | Weighted Average Shares |  |  | Per Share Amount |  |  | Net Income |  |  | Weighted Average Shares |  |  | Per Share Amount |
Basic EPS |  | $ | 82,151 |  |  |  | 43,575 |  |  | $ | 1.89 |  |  | $ | 78,409 |  |  |  | 43,244 |  |  | $ | 1.81 |  |  | $ | 76,425 |  |  |  | 43,836 |  |  | $ | 1.74 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  | 330 |  |  |  |  |  |  |  |  |  |  |  | 378 |  |  |  |  |  |  |  |  |  |  |  | 553 |  |  |  |  |
Diluted EPS |  | $ | 82,151 |  |  |  | 43,905 |  |  | $ | 1.87 |  |  | $ | 78,409 |  |  |  | 43,622 |  |  | $ | 1.80 |  |  | $ | 76,425 |  |  |  | 44,389 |  |  | $ | 1.72 |

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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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