Earnings Per Share (Details)	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Earnings Per Share
Basic weighted average common shares outstanding	130,510,828	130,605,417	130,464,015	130,590,248
Effect of dilutive securities - stock options and restricted stock	2,525,449	1,626,837
Diluted weighted average common shares outstanding	133,036,277	132,232,254	130,464,015	130,590,248
Stock Options
Anti-dilutive shares excluded from the calculation of diluted earnings per share
Number of anti-dilutive shares excluded from the calculation of diluted earnings per share			3,100,000	1,900,000
Common shares issuable upon the exercise of stock options
Anti-dilutive shares excluded from the calculation of diluted earnings per share
Number of anti-dilutive shares excluded from the calculation of diluted earnings per share	2,800,000	4,200,000	2,800,000	1,900,000

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752

Reference 7: http://www.xbrl.org/2003/role/presentationRef

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+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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+ Details