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Per Share Data and Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2013
Per Share Data and Stockholders' Equity [Abstract] |
Dilutive effect on earnings per share | The following table illustrates the dilutive effect of such items on earnings per share for the second quarter and six-month periods ended June 30, 2013 and 2012:
|  | Second Quarter Ended June 30, 2013 |
|  |  |  |  | Income (Loss) From Continuing Operations |  |  | Income (Loss) From Discontinued Operations |  |  | Net Income (Loss) |
|  | Weighted Average Shares |  |  | Amount |  |  | Per Share Amount |  |  | Amount |  |  | Per Share Amount |  |  | Amount |  |  | Per Share Amount |
|  | (In thousands, except per share amounts) |
Earnings (loss) and shares |  |  | 52,597 |  |  | $ | 8,717 |  |  |  |  |  |  | $ | 199 |  |  |  |  |  |  | $ | 8,916 |  |  |  |  |
Effect of participating securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested restricted stock and stock units |  |  |  |  |  |  | (71 | ) |  |  |  |  |  |  | — |  |  |  |  |  |  |  | (71 | ) |  |  |  |
Basic earnings (loss) and shares |  |  | 52,597 |  |  | $ | 8,646 |  |  | $ | 0.16 |  |  | $ | 199 |  |  | $ | 0.01 |  |  | $ | 8,845 |  |  | $ | 0.17 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation plans |  |  | 345 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted earnings (loss) and shares |  |  | 52,942 |  |  | $ | 8,646 |  |  | $ | 0.16 |  |  | $ | 199 |  |  | $ | 0.01 |  |  | $ | 8,845 |  |  | $ | 0.17 |
|  | Second Quarter Ended June 30, 2012 |
|  |  |  |  | Income (Loss) From Continuing Operations |  |  | Income (Loss) From Discontinued Operations |  |  | Net Income (Loss) |
|  | Weighted Average Shares |  |  | Amount |  |  | Per Share Amount |  |  | Amount |  |  | Per Share Amount |  |  | Amount |  |  | Per Share Amount |
|  | (In thousands, except per share amounts) |
Earnings (loss) and shares |  |  | 52,593 |  |  | $ | 28,998 |  |  |  |  |  |  | $ | (819 | ) |  |  |  |  |  | $ | 28,179 |  |  |  |  |
Effect of participating securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested restricted stock and stock units |  |  |  |  |  |  | (452 | ) |  |  |  |  |  |  | — |  |  |  |  |  |  |  | (452 | ) |  |  |  |
Basic earnings (loss) and shares |  |  | 52,593 |  |  | $ | 28,546 |  |  | $ | 0.54 |  |  | $ | (819 | ) |  | $ | (0.01 | ) |  | $ | 27,727 |  |  | $ | 0.53 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingently convertible debt (5.0% Convertible Notes) |  |  | 10,535 |  |  |  | 1,856 |  |  |  |  |  |  |  | 33 |  |  |  |  |  |  |  | 1,889 |  |  |  |  |
Stock compensation plans |  |  | 378 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted earnings (loss) and shares |  |  | 63,506 |  |  | $ | 30,402 |  |  | $ | 0.48 |  |  | $ | (786 | ) |  | $ | (0.01 | ) |  | $ | 29,616 |  |  | $ | 0.47 |
|  | Six Months Ended June 30, 2013 |
|  |  |  |  | Income (Loss) From Continuing Operations |  |  | Income (Loss) From Discontinued Operations |  |  | Net Income (Loss) |
|  | Weighted Average Shares |  |  | Amount |  |  | Per Share Amount |  |  | Amount |  |  | Per Share Amount |  |  | Amount |  |  | Per Share Amount |
|  | (In thousands, except per share amounts) |
Earnings (loss) and shares |  |  | 52,591 |  |  | $ | 30,415 |  |  |  |  |  |  | $ | (208 | ) |  |  |  |  |  | $ | 30,207 |  |  |  |  |
Effect of participating securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested restricted stock and stock units |  |  |  |  |  |  | (237 | ) |  |  |  |  |  |  | — |  |  |  |  |  |  |  | (237 | ) |  |  |  |
Basic earnings (loss) and shares |  |  | 52,591 |  |  | $ | 30,178 |  |  | $ | 0.57 |  |  | $ | (208 | ) |  | $ | — |  |  | $ | 29,970 |  |  | $ | 0.57 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation plans |  |  | 346 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted earnings (loss) and shares |  |  | 52,937 |  |  | $ | 30,178 |  |  | $ | 0.57 |  |  | $ | (208 | ) |  | $ | — |  |  | $ | 29,970 |  |  | $ | 0.57 |
|  | Six Months Ended June 30, 2012 |
|  |  |  |  | Income (Loss) From Continuing Operations |  |  | Income (Loss) From Discontinued Operations |  |  | Net Income (Loss) |
|  | Weighted Average Shares |  |  | Amount |  |  | Per Share Amount |  |  | Amount |  |  | Per Share Amount |  |  | Amount |  |  | Per Share Amount |
|  | (In thousands, except per share amounts) |
Earnings (loss) and shares |  |  | 52,409 |  |  | $ | 50,143 |  |  |  |  |  |  | $ | (1,466 | ) |  |  |  |  |  | $ | 48,677 |  |  |  |  |
Effect of participating securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested restricted stock and stock units |  |  |  |  |  |  | (777 | ) |  |  |  |  |  |  | — |  |  |  |  |  |  |  | (777 | ) |  |  |  |
Basic earnings (loss) and shares |  |  | 52,409 |  |  | $ | 49,366 |  |  | $ | 0.94 |  |  | $ | (1,466 | ) |  | $ | (0.03 | ) |  | $ | 47,900 |  |  | $ | 0.91 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingently convertible debt (5.0% Convertible Notes) |  |  | 11,106 |  |  |  | 3,981 |  |  |  |  |  |  |  | 80 |  |  |  |  |  |  |  | 4,061 |  |  |  |  |
Stock compensation plans |  |  | 448 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted earnings (loss) and shares |  |  | 63,963 |  |  | $ | 53,347 |  |  | $ | 0.83 |  |  | $ | (1,386 | ) |  | $ | (0.02 | ) |  | $ | 51,961 |  |  | $ | 0.81 |

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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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