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Earnings per Share (Tables) | 6 Months Ended
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Jun. 30, 2012
Computation of Basic and Diluted EPS | The following table sets forth the computation of basic and diluted EPS for the three and six months ended June 30:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 2,813,000 |  |  | $ | 5,944,000 |  |  | $ | 6,804,000 |  |  | $ | 12,302,000 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares of common stock outstanding |  |  | 13,747,000 |  |  |  | 14,175,990 |  |  |  | 13,711,961 |  |  |  | 14,219,532 |
Effect of dilutive common stock equivalents |  |  | 87,264 |  |  |  | 285,326 |  |  |  | 67,634 |  |  |  | 270,227 |
Weighted average diluted common shares outstanding |  | $ | 13,834,264 |  |  | $ | 14,461,316 |  |  | $ | 13,779,595 |  |  | $ | 14,489,759 |
EPS: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.20 |  |  | $ | 0.42 |  |  | $ | 0.50 |  |  | $ | 0.87 |
Diluted |  | $ | 0.20 |  |  | $ | 0.41 |  |  | $ | 0.49 |  |  | $ | 0.85 |

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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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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
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