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Stock-based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2014
SEIP IV |
Stock-Based Compensation arrangements |
Schedule of Value per Share and Assumptions Used |
|  | March 31, |
|  | 2014 |
Stock price volatility |  | 37.5% |
Risk free rate of return |  | 1.1% |
Annual salary increase rate |  | 4.0% |
Annual turnover rate |  | 4.6% |
TSR Performance Share Awards |
Stock-Based Compensation arrangements |
Schedule of Value per Share and Assumptions Used |
|  | Grant Date |  | March 31, 2014 |
Fair value per performance share award |  | $ | 32.04 |  | $9.58 - $25.37 |
Assumptions: |  |  |  |  |
Stock price volatility |  | 41.3% |  | 30.7% - 78.7% |
Risk free rate of return |  | 0.7% |  | 0.1% - 0.8% |
Expected dividend yield |  | 0.2% |  | 0.2% |

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