CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Change in net unrealized gains (losses) on investments, income tax	$ (419,820)	$ 172,765	$ (496,154)	$ 178,003
Reclassification adjustment for investment amounts included in net income, income tax	(6,180)	(1,093)	(8,880)	(1,472)
Change in net unrealized gains (losses) relating to other-than-temporary impaired investments for which a portion has been recognized in earnings, income tax	(1,293)	1,363	2,926	2,934
Change in accumulated (loss) gain - derivatives, income tax	(1,606)	(2,475)	(63)	397
Reclassification adjustment for derivative amounts included in net income, income tax	$ 203	$ 341	$ 377	$ 576