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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Reconciles Numerators and Denominators of Basic Earnings Per Share and Diluted Earnings Per Share | The following table reconciles the numerators and denominators of basic and diluted EPS:
| Years ended December 31,
(dollars in thousands, except share and per share data) | 2017 |  | 2016 |  | 2015
Numerator for Earnings per Common Share—Basic: |  |  |  |  |
Net income | $ | 72,968 |  |  | $ | 71,392 |  |  | $ | 67,081 |
Less: Income allocated to participating shares | 242 |  |  | 225 |  |  | 280 |
Net Income Allocated to Common Shareholders | $ | 72,726 |  |  | $ | 71,167 |  |  | $ | 66,801 |
Numerator for Earnings per Common Share—Diluted: |  |  |  |  |
Net income | $ | 72,968 |  |  | $ | 71,392 |  |  | $ | 67,081 |
Denominators: |  |  |  |  |
Weighted Average Common Shares Outstanding—Basic | 34,729,376 |  |  | 34,677,738 |  |  | 33,812,990 |
Add: Dilutive potential common shares | 225,391 |  |  | 95,432 |  |  | 35,092 |
Denominator for Treasury Stock Method—Diluted | 34,954,767 |  |  | 34,773,170 |  |  | 33,848,082 |
Weighted Average Common Shares Outstanding—Basic | 34,729,376 |  |  | 34,677,738 |  |  | 33,812,990 |
Add: Average participating shares outstanding | 115,418 |  |  | 109,755 |  |  | 141,558 |
Denominator for Two-Class Method—Diluted | 34,844,794 |  |  | 34,787,493 |  |  | 33,954,548 |
Earnings per common share—basic | $ | 2.10 |  |  | $ | 2.06 |  |  | $ | 1.98 |
Earnings per common share—diluted | $ | 2.09 |  |  | $ | 2.05 |  |  | $ | 1.98 |
Warrants considered anti-dilutive excluded from dilutive potential common shares - exercise price $31.53 per share, expires January 2019 | 438,681 |  |  | 517,012 |  |  | 517,012 |
Restricted stock considered anti-dilutive excluded from dilutive potential common shares | 88,578 |  |  | 116,749 |  |  | 106,466 |

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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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