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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2012
Earnings Per Share [Abstract] |
Computation of Basic and Diluted earnings (Loss) per share | The computations of Basic and Diluted Earnings per Share were as follows:
| Three Months Ended |  | Nine Months Ended |
| September 30 |  | September 30 |
| 2012 |  | 2011 |  | 2012 |  | 2011 |
Numerator: |  |  |  |  |  |  |  |
Net Earnings | $ | 8,745 |  |  | $ | 9,728 |  |  | $ | 27,740 |  |  | $ | 21,449 |  |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Basic - Weighted Average Shares Outstanding | 18,468,546 |  |  | 18,741,524 |  |  | 18,594,508 |  |  | 18,881,132 |  |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Share-based compensation plans | 572,329 |  |  | 529,550 |  |  | 560,336 |  |  | 535,929 |  |
Diluted - Weighted Average Shares Outstanding | 19,040,875 |  |  | 19,271,074 |  |  | 19,154,844 |  |  | 19,417,061 |  |
Basic Earnings per Share | $ | 0.47 |  |  | $ | 0.52 |  |  | $ | 1.49 |  |  | $ | 1.14 |  |
Diluted Earnings per Share | $ | 0.46 |  |  | $ | 0.50 |  |  | $ | 1.45 |  |  | $ | 1.10 |  |

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- Definition Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 260 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (a) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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