CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Change in net unrealized gains (losses) on investments, income tax	$ 205,778	$ 240,878	$ 383,781	$ 346,024
Reclassification adjustment for investment amounts included in net income, income tax	(4,951)	(3,716)	(6,423)	(14,108)
Change in net unrealized gains (losses) relating to other-than-temporary impaired investments for which a portion has been recognized in earnings, income tax	12,810	(532)	15,744	(9,568)
Change in accumulated gain - derivatives, income tax	1,828	(420)	2,739	1,424
Reclassification adjustment for derivative amounts included in net income, income tax	$ (415)	$ (355)	$ (354)	$ (478)