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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Basic and Diluted Earnings (Loss) Per Share | The following is a reconciliation of the outstanding shares used in the basic and diluted earnings per share calculations.
(Dollars in thousands, except per share data) | For the Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Net income | $ | 93,949 |  |  | 87,802 |  |  | 83,722 |
Basic weighted average common shares outstanding | 64,384,851 |  |  | 63,643,622 |  |  | 62,945,669 |
Plus: |  |  |  |  |
Dilutive shares | 194,371 |  |  | 208,364 |  |  | 169,049 |
Diluted weighted average common shares outstanding | 64,579,222 |  |  | 63,851,986 |  |  | 63,114,718 |
Earnings per share: |  |  |  |  |
Basic | $ | 1.46 |  |  | 1.38 |  |  | 1.33 |
Diluted | $ | 1.45 |  |  | 1.38 |  |  | 1.33 |

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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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