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v2.3.0.11

Net Income Per Share (Options and Warrants Excluded From the Calculation) (Details) (USD $) In Millions, except Per Share data | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2011 | Jun. 30, 2010 | Jun. 30, 2011 | Jun. 30, 2010
Maximum [Member] | Stock Options [Member] |  |  |  |
Exercise price of excluded options | $ 14.28 | $ 16.90 | $ 14.28 | $ 16.90
Minimum [Member] | Stock Options [Member] |  |  |  |
Exercise price of excluded options | $ 5.00 | $ 5.86 | $ 5.00 | $ 5.00
Stock Options [Member] |  |  |  |
Antidilutive securities excluded from computation of earnings per share | 2.2 | 1.8 | 2.2 | 2.6
Warrants [Member] |  |  |  |
Antidilutive securities excluded from computation of earnings per share | 6.3 |  | 6.3 |
Exercise price of excluded warrants | $ 7.50 |  | $ 7.50 |

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