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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Basic and Diluted Earnings per share | The following table sets forth the calculation of EPS for the years ended December 31, 2015, 2014, and 2013:
|  | Year Ended December 31,
|  | 2015 |  | 2014 |  | 2013
|  | (In thousands, except per share amounts)
Weighted average basic common shares outstanding |  | 23,148 |  |  | 23,380 |  |  | 23,096 |
Dilutive effect of contingently convertible notes and warrants |  | — |  |  | 1,499 |  |  | 2,213 |
Dilutive effect of employee stock purchases, net of assumed repurchase of treasury stock |  | 4 |  |  | 6 |  |  | 5 |
Weighted average dilutive common shares outstanding |  | 23,152 |  |  | 24,885 |  |  | 25,314 |
Basic: |  |  |  |  |  |
Net income |  | $ | 93,999 |  |  | $ | 93,004 |  |  | $ | 113,992 |
Less: Earnings allocated to participating securities |  | 3,595 |  |  | 3,643 |  |  | 4,963 |
Earnings available to basic common shares |  | $ | 90,404 |  |  | $ | 89,361 |  |  | $ | 109,029 |
Basic earnings per common share |  | $ | 3.91 |  |  | $ | 3.82 |  |  | $ | 4.72 |
Diluted: |  |  |  |  |  |
Net income |  | $ | 93,999 |  |  | $ | 93,004 |  |  | $ | 113,992 |
Less: Earnings allocated to participating securities |  | 3,595 |  |  | 3,468 |  |  | 4,599 |
Earnings available to diluted common shares |  | $ | 90,404 |  |  | $ | 89,536 |  |  | $ | 109,393 |
Diluted earnings per common share |  | $ | 3.90 |  |  | $ | 3.60 |  |  | $ | 4.32 |

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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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