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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Earnings Per Share Reconciliation [Abstract] |
Reconciliation Of Numerators And Denominators Of Basic And Diluted Earnings Per Share | A reconciliation of the numerators and denominators of the basic and diluted earnings per share calculation for income from operations is presented below:
| 2012 |  | 2011 |  | 2010
| Income (Numerator) |  | Weighted Shares (Denominator) |  | Per-Share Amount |  | Income (Numerator) |  | Weighted Shares (Denominator) |  | Per-Share Amount |  | Income (Numerator) |  | Weighted Shares (Denominator) |  | Per-Share Amount
| (Amounts and numbers in thousands, except per-share data)
Basic EPS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income available to common stockholders | $ | 116,911 |  |  | 54,899 |  |  | $ | 2.13 |  |  | $ | 191,164 |  |  | 54,825 |  |  | $ | 3.49 |  |  | $ | 152,198 |  |  | 54,792 |  |  | $ | 2.78 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options | 0 |  |  | 23 |  |  |  |  | 0 |  |  | 20 |  |  |  |  | 0 |  |  | 34 |  |  |
Diluted EPS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income available to common stockholders after assumed conversions | $ | 116,911 |  |  | 54,922 |  |  | $ | 2.13 |  |  | $ | 191,164 |  |  | 54,845 |  |  | $ | 3.49 |  |  | $ | 152,198 |  |  | 54,826 |  |  | $ | 2.78 |

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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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