Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows used in operating activities	$ (441,769)	$ (766,120)
Cash flows from investing activities:
Proceeds from sales of fixed-maturity investments available for sale	54,456	136,123
Proceeds from sales of equity securities available for sale	31,235	644
Proceeds from sales of trading securities	5,008,003	4,462,041
Proceeds from redemptions of fixed-maturity investments available for sale	4,459	30,746
Proceeds from redemptions of fixed-maturity investments held to maturity	1,505	7,250
Purchases of trading securities	(4,933,850)	(4,184,608)
Sales and redemptions of short-term investments, net	481,673	481,969
Sales (purchases) of other invested assets, net	(73,684)	(2,817)
Proceeds from the sale of investment in affiliate	14,700	0
Purchases of property and equipment, net	118	(2,776)
Net cash provided by investing activities	588,615	928,572
Cash flows used in financing activities:
Dividends paid	(1,001)	(1,001)
Redemption of long-term debt	(153,261)	(160,000)
Net cash used in financing activities	(154,262)	(161,001)
Effect of exchange rate changes on cash	(11)	78
(Decrease) increase in cash	(7,427)	1,529
Cash, beginning of period	35,589	20,334
Cash, end of period	28,162	21,863
Supplemental disclosures of cash flow information:
Income taxes paid (received)	1,530	(69)
Interest paid	$ 24,531	$ 34,660