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Earnings Per Share Level 3 (Tables) | 12 Months Ended
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Dec. 31, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | A reconciliation of the numerators and denominators of the basic and diluted EPS for the three years ended December 31 is presented below:
| 2014 |  | 2013 |  | 2012
| (In thousands, except per share amounts)
Amounts attributable to common stockholders: |  |  |  |  |  |  |  |
Income from continuing operations — basic | $ | 170,283 |  |  | $ | 146,926 |  |  | $ | 153,583 |
After tax interest on convertible debt | 51 |  |  | 51 |  |  | 51 |
Income from continuing operations — diluted | $ | 170,334 |  |  | $ | 146,977 |  |  | $ | 153,634 |
Income from discontinued operations, net of tax | $ | 2,186 |  |  | $ | 406 |  |  | $ | 262 |
Net income — basic | $ | 172,469 |  |  | $ | 147,332 |  |  | $ | 153,845 |
After tax interest on convertible debt | 51 |  |  | 51 |  |  | 51 |
Net income — diluted | $ | 172,520 |  |  | $ | 147,383 |  |  | $ | 153,896 |
Weighted average shares: |  |  |  |  |  |  |  |
Weighted average shares — basic | 210,741 |  |  | 211,811 |  |  | 215,712 |
Stock options | 3,338 |  |  | 4,082 |  |  | 3,233 |
Convertible debt | 121 |  |  | 121 |  |  | 121 |
Weighted average shares — diluted | 214,200 |  |  | 216,014 |  |  | 219,066 |
Amounts attributable to common stockholders: |  |  |  |  |
Income from continuing operations per share: |  |  |  |  |
Basic | $ | 0.81 |  |  | $ | 0.70 |  |  | $ | 0.71 |
Diluted | $ | 0.80 |  |  | $ | 0.68 |  |  | $ | 0.70 |
Income from discontinued operations per share: |  |  |  |  |
Basic | $ | 0.01 |  |  | $ | — |  |  | $ | — |
Diluted | $ | 0.01 |  |  | $ | — |  |  | $ | — |
Net income per share: |  |  |  |  |  |  |  |
Basic | $ | 0.82 |  |  | $ | 0.70 |  |  | $ | 0.71 |
Diluted | $ | 0.81 |  |  | $ | 0.68 |  |  | $ | 0.70 |

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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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