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Earnings Per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2016
Earnings Per Share [Abstract] |
Summary Of Computation Of Basic And Diluted Earnings Per Common Share | The following table sets forth the computation of basic and diluted earnings per common share for the three and nine months ended September 30, 2016 and 2015.
|  | Three Months Ended September 30, | Nine Months Ended September 30,
(In thousands, except share and per common share data) |  | 2016 |  | 2015 | 2016 |  | 2015
Numerator: |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 27,449 |  |  | $ | 20,040 |  | $ | 66,133 |  |  | $ | 60,123 |
Denominator: |  |  |  |  |  |  |  |  |
Weighted-average common shares outstanding |  | 15,330,791 |  |  | 15,361,087 |  | 15,330,802 |  |  | 15,370,380 |
Effect of dilutive performance-based restricted stock units |  | 68,916 |  |  | 40,721 |  | 71,023 |  |  | 41,131 |
Weighted-average common shares outstanding adjusted for the effect of dilutive performance-based restricted stock units |  | 15,399,707 |  |  | 15,401,808 |  | 15,401,825 |  |  | 15,411,511 |
Earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Basic earnings per common share |  | $ | 1.79 |  |  | $ | 1.30 |  | $ | 4.31 |  |  | $ | 3.91 |
Diluted earnings per common share |  | $ | 1.78 |  |  | $ | 1.30 |  | $ | 4.29 |  |  | $ | 3.90 |

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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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