Income Taxes Income (Loss) Before Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Components of Pretax Income (Loss) [Line Items]
Income (loss) before provision (benefit) for income taxes	$ 94,942	$ (254,065)	$ (420,060)
United States [Member]
Components of Pretax Income (Loss) [Line Items]
Income (loss) before provision (benefit) for income taxes	88,638	(42,775)	(222,594)
Foreign Tax Authority [Member]
Components of Pretax Income (Loss) [Line Items]
Income (loss) before provision (benefit) for income taxes	$ 6,304	$ (211,290)	$ (197,466)