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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2013
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) |  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 12,653 |  |  | $ | 10,209 |  |  | $ | 36,415 |  |  | $ | 34,310 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares |  |  | 15,594 |  |  |  | 15,491 |  |  |  | 15,566 |  |  |  | 15,450 |
Diluted earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of dilutive stock options |  |  | 94 |  |  |  | 64 |  |  |  | 81 |  |  |  | 51 |
Adjusted weighted average shares |  |  | 15,688 |  |  |  | 15,555 |  |  |  | 15,647 |  |  |  | 15,501 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 0.81 |  |  | $ | 0.66 |  |  | $ | 2.34 |  |  | $ | 2.22 |
Diluted earnings per share |  |  | 0.81 |  |  |  | 0.66 |  |  |  | 2.33 |  |  |  | 2.21 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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