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Comprehensive Loss (Details) (USD $)
In Thousands
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Net loss$ (94,125)$ (533,336)$ (239,007)$ (618,071)
Other comprehensive loss:    
Net unrealized holding losses on investments, net of tax(9)(6)0(256)
Reclassification of losses included in earnings, net of tax000(1,457)
Comprehensive loss$ (94,134)$ (533,342)$ (239,007)$ (619,784)