Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net income (loss)	$ (483,024)	$ 139,256
Unrealized holding gains (losses) arising during the period on:
Investments with no other-than-temporary impairment, net of tax provision (benefit) of $19,049 and $(19,632)	42,123	(46,390)
Investments with other-than-temporary impairment, net of tax provision (benefit) of $(7,345) and $9,195	(13,736)	20,845
Unrealized holding gains (losses) arising during the period, net of tax	28,387	(25,545)
Less: reclassification adjustment for gains (losses) included in net income (loss), net of tax provision (benefit) of $(1,272) and $172	(856)	1,029
Change in net unrealized gains on investments	29,243	(26,574)
Change in cumulative translation adjustment, net of tax provision (benefit) of $941 and $669	1,750	1,243
Change in cash flow hedge, net of tax provision (benefit) of $(56) and $(56)	(105)	(105)
Other comprehensive income (loss)	30,888	(25,436)
Comprehensive income (loss)	$ (452,136)	$ 113,820