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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2016
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings per Share | The computations of Basic and Diluted Earnings per Share were as follows:
| Three Months Ended |  | Six Months Ended
| June 30 |  | June 30
| 2016 |  | 2015 |  | 2016 |  | 2015
Numerator: |  |  |  |  |  |  |
Net Earnings | $ | 15,328 |  |  | $ | 14,817 |  |  | $ | 19,767 |  |  | $ | 19,843 |
Denominator: |  |  |  |  |  |  |
Basic - Weighted Average Shares Outstanding | 17,508,022 |  |  | 18,197,431 |  |  | 17,526,107 |  |  | 18,240,027 |
Effect of dilutive securities: |  |  |  |  |  |  |
Share-based compensation plans | 425,221 |  |  | 474,609 |  |  | 428,060 |  |  | 484,832 |
Diluted - Weighted Average Shares Outstanding | 17,933,243 |  |  | 18,672,040 |  |  | 17,954,167 |  |  | 18,724,859 |
Basic Earnings per Share | $ | 0.88 |  |  | $ | 0.81 |  |  | $ | 1.13 |  |  | $ | 1.09 |
Diluted Earnings per Share | $ | 0.85 |  |  | $ | 0.79 |  |  | $ | 1.10 |  |  | $ | 1.06 |

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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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