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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the reconciliation from basic to diluted average common shares and the calculations of net income per common share. Net income for basic and diluted calculations do not differ.
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In thousands, except per share) | 2013 |  | 2012 |  | 2013 |  | 2012
Net Income | $ | 11,787 |  |  | $ | 9,344 |  |  | $ | 18,737 |  |  | $ | 16,129 |
Average Common Shares: |  |  |  |  |  |  |
Basic (weighted-average outstanding shares) | 12,044 |  |  | 11,884 |  |  | 12,025 |  |  | 11,879 |
Dilutive potential common shares from stock options | 156 |  |  | 174 |  |  | 154 |  |  | 163 |
Diluted (weighted-average outstanding shares) | 12,200 |  |  | 12,058 |  |  | 12,179 |  |  | 12,042 |
Basic earnings per share | $ | 0.98 |  |  | $ | 0.79 |  |  | $ | 1.56 |  |  | $ | 1.36 |
Diluted earnings per share | $ | 0.97 |  |  | $ | 0.77 |  |  | $ | 1.54 |  |  | $ | 1.34 |

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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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