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Earnings Per Share (Weighted Average Common Shares Outstanding) (Details) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Weighted average common shares outstanding: |  |  |  |
Basic EPS calculation (in shares) | 110,783 | 110,768 | 110,775 | 110,747
Effect of dilutive share-based awards (in shares) | 2 | 11 | 5 | 16
Diluted EPS calculation (in shares) | 110,785 | 110,779 | 110,780 | 110,763

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