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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2013
Earnings Per Share [Abstract] |
Components of basic and diluted earnings per common share | Basic and diluted earnings per common share are as follows (in thousands, except per share data):
| Three months ended September 30, |  | Nine months ended September 30,
| 2013 |  | 2012 |  | 2013 |  | 2012
Net income - Basic | $ | 8,968 |  |  | $ | 9,806 |  |  | $ | 25,173 |  |  | $ | 26,590 |
Impact of assumed conversions: |  |  |  |  |  |  |
Interest on convertible notes | — |  |  | 414 |  |  | — |  |  | — |
Net income - Diluted | $ | 8,968 |  |  | $ | 10,220 |  |  | $ | 25,173 |  |  | $ | 26,590 |
Weighted average common shares outstanding - Basic | 52,742 |  |  | 48,384 |  |  | 50,819 |  |  | 48,054 |
Assumed conversions: |  |  |  |  |  |  |
Incremental common shares from warrants | 1,365 |  |  | 1,493 |  |  | 1,404 |  |  | 1,617 |
Incremental common shares from stock options | 1,134 |  |  | 1,003 |  |  | 1,143 |  |  | 986 |
Incremental common shares from restricted stock units | 76 |  |  | 158 |  |  | 41 |  |  | 80 |
Incremental common shares from convertible senior notes | — |  |  | 2,440 |  |  | — |  |  | — |
Weighted average common shares outstanding - Diluted | 55,317 |  |  | 53,478 |  |  | 53,407 |  |  | 50,737 |
Basic earnings per common share | $ | 0.17 |  |  | $ | 0.20 |  |  | $ | 0.50 |  |  | $ | 0.55 |
Diluted earnings per common share | $ | 0.16 |  |  | $ | 0.19 |  |  | $ | 0.47 |  |  | $ | 0.52 |

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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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