CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Change in net unrealized gains (losses) on investments, income tax	$ 259,589	$ (76,295)
Reclassification adjustment for investment amounts included in net income, income tax	(2,023)	(2,704)
Change in net unrealized gains (losses) relating to other-than-temporary impaired investments for which a portion has been recognized in earnings, income tax	2,429	4,219
Change in accumulated (loss) gain - derivatives, income tax	316	1,543
Reclassification adjustment for derivative amounts included in net income, income tax	235	174
Change in postretirement benefits liability adjustment, income tax	$ (632)	$ (922)