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Shareholders' Equity (Details)	6 Months Ended
Shareholders' Equity (Details)	Jun. 30, 2011
Common Stock Shares Outstanding
Outstanding as of December 31, 2010	323,225,355
Restricted stock and other stock activities	230,601
Exercise of options	(276,530)
Outstanding as of June 30, 2011	323,179,426

Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.

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