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Equity (Tables) | 9 Months Ended
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Sep. 30, 2015
Equity [Abstract] |
Treasury Stock | The following table shows the number of shares withheld for taxes and the associated value of those shares for the nine-month periods ended September 30, 2015 and 2014. These shares were accounted for as treasury stock when withheld and then immediately retired.
| Nine Months Ended September 30,
| 2015 |  | 2014
| (In thousands)
Number of shares withheld for taxes | 1,699 |  |  | 1,004 |
Value of shares withheld for taxes | $ | 2,347 |  |  | $ | 6,281 |

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