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Dividends (Tables) | 12 Months Ended
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Dec. 31, 2012
Dividends [Abstract] |
Dividends Paid In Total And Per Share | The following table presents shareholder dividends paid in total and per share:
| Year Ended December 31,
| 2012 |  | 2011 |  | 2010
| (Amounts in thousands, except per share data)
Total paid | $ | 134,105 |  |  | $ | 132,142 |  |  | $ | 129,863 |
Per share | $ | 2.4425 |  |  | $ | 2.41 |  |  | $ | 2.37 |

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