CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME
Change in net unrealized gains (losses) on investments, income tax	$ 5,238	$ 18,365	[1]
Reclassification adjustment for investment amounts included in net income, income tax	(379)	(3,043)	[1]
Change in net unrealized gains (losses) relating to other-than-temporary impaired investments for which a portion has been recognized in earnings, income tax	1,571	(3,629)	[1]
Change in accumulated gain - derivatives, income tax	3,408	3,621	[1]
Reclassification adjustment for derivative amounts included in net income, income tax	$ (301)	$ (361)	[1]

[1] Recast from previously reported information