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CONSOLIDATED STATEMENTS OF ACCUMULATED DEFICIT (USD $)
In Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Increase (Decrease) in Retained Earnings        
Accumulated deficit, beginning of period $ (1,206,692) $ (263,464) $ (934,511) $ (245,974)
Net income 56,360 33,969 62,842 30,819
Repurchase of common shares (145,764)   (292,605)  
Repurchase of equity component of convertible debt (574,791)   (654,831)  
Employee withholding taxes related to share-based awards (16,456)   (68,238)  
Cash dividends declared and dividend equivalents   (15,174)   (29,514)
Accumulated deficit, end of period $ (1,887,343) $ (244,669) $ (1,887,343) $ (244,669)