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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2014
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings per Share | The computations of Basic and Diluted Earnings per Share for the years ended December 31 were as follows:
| 2014 |  | 2013 |  | 2012
Numerator: |  |  |  |  |
Net Earnings | $ | 50,651 |  |  | $ | 40,231 |  |  | $ | 41,584 |
Denominator: |  |  |  |  |  |  |  |
Basic - Weighted Average Shares Outstanding | 18,217,384 |  |  | 18,297,371 |  |  | 18,544,896 |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Employee stock options | 523,474 |  |  | 536,082 |  |  | 557,120 |
Diluted - Weighted Average Shares Outstanding | 18,740,858 |  |  | 18,833,453 |  |  | 19,102,016 |
Basic Earnings per Share | $ | 2.78 |  |  | $ | 2.20 |  |  | $ | 2.24 |
Diluted Earnings per Share | $ | 2.70 |  |  | $ | 2.14 |  |  | $ | 2.18 |

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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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