Condensed Consolidated Statements of Comprehensive (Loss) Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net (loss) income	$ 14,325	$ 183,568	$ (274,166)	$ 423,689
Foreign Currency Translation Adjustments:
Unrealized foreign currency translation adjustment	1	(1)	(7)	6,519
Less: Reclassification adjustment for net gains (losses) included in net (loss) income	0	(355)	0	27,599
Net foreign currency translation adjustment	1	354	(7)	(21,080)
Unrealized Gain on Investments:
Unrealized holding gains (losses) arising during the period, net of tax	(1,618)	(23,471)	14,177	(9,856)
Less: Reclassification adjustment for net gains (losses) included in net (loss) income	(1,189)	1,489	7,680	(33,449)
Net unrealized gains (losses) on investments	(429)	(24,960)	6,497	23,593
Other Comprehensive Income (Loss)	(428)	(24,606)	6,490	2,513
Comprehensive (Loss) Income	$ 13,897	$ 158,962	$ (267,676)	$ 426,202