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Net Income Per Share (Tables) | 6 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Basic and diluted net income per share | The following table sets forth the calculation of basic and diluted net income per share (in thousands, except per share amounts):
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2013 |  | 2012 |  | 2013 |  | 2012
Basic net income per share: |  |  |  |  |  |  |
Net income | $ | 5,200 |  |  | $ | 7,260 |  |  | $ | 10,795 |  |  | $ | 11,008 |
Weighted average common shares | 15,362 |  |  | 15,962 |  |  | 15,362 |  |  | 15,962 |
Basic net income per share | $ | 0.34 |  |  | $ | 0.45 |  |  | $ | 0.70 |  |  | $ | 0.69 |
Diluted net income per share: |  |  |  |  |  |  |
Net income | $ | 5,200 |  |  | $ | 7,260 |  |  | $ | 10,795 |  |  | $ | 11,008 |
Weighted average common shares | 15,362 |  |  | 15,962 |  |  | 15,362 |  |  | 15,962 |
Effect of dilutive securities: stock options | 95 |  |  | 44 |  |  | 65 |  |  | 50 |
Diluted weighted average common shares | 15,457 |  |  | 16,006 |  |  | 15,427 |  |  | 16,012 |
Diluted net income per share | $ | 0.34 |  |  | $ | 0.45 |  |  | $ | 0.70 |  |  | $ | 0.69 |

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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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