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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted earnings per share:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30 |  |  | September 30 |
(in thousands except per share data) |  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 13,763 |  |  | $ | 12,312 |  |  | $ | 36,581 |  |  | $ | 35,480 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares |  |  | 17,633 |  |  |  | 17,554 |  |  |  | 17,625 |  |  |  | 17,532 |
Diluted earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of dilutive stock options and restricted stock grants |  |  | 20 |  |  |  | 15 |  |  |  | 20 |  |  |  | 16 |
Adjusted weighted average shares |  |  | 17,653 |  |  |  | 17,569 |  |  |  | 17,645 |  |  |  | 17,548 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 0.78 |  |  | $ | 0.70 |  |  | $ | 2.08 |  |  | $ | 2.02 |
Diluted earnings per share |  |  | 0.78 |  |  |  | 0.70 |  |  |  | 2.07 |  |  |  | 2.02 |

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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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