CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net loss	$ (185,393)	$ (125,540)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	39,269	27,825
Decrease in deferred insurance policy acquisition costs	312	816
Decrease in accrued investment income	2,750	9,341
Decrease (increase) in reinsurance recoverable on loss reserves	69,120	(7,315)
Decrease (increase) in reinsurance recoverable on paid losses	1,901	(7,685)
Decrease in prepaid reinsurance premiums	675	429
Decrease (increase) in premium receivable	4,850	(1,643)
Decrease in loss reserves	(801,269)	(316,061)
Change in premium deficiency reserve	(20,053)	(24,185)
Decrease in unearned premiums	(28,172)	(31,300)
Deferred tax benefit	(11,970)	(12,588)
Increase in income taxes payable (current)	585	294,095
Realized investment gains, excluding impairment losses	(27,495)	(64,656)
Net investment impairment losses	0	6,052
Other	(22,572)	68,624
Net cash used in operating activities	(977,462)	(183,791)
Cash flows from investing activities:
Purchase of fixed maturities	(1,881,026)	(2,593,435)
Purchase of equity securities	(62)	(56)
Proceeds from sale of equity securities	504	0
Proceeds from sale of fixed maturities	1,818,354	2,483,172
Proceeds from maturity of fixed maturities	821,954	352,525
Net increase in payable for securities	3,921	44,664
Net cash provided by investing activities	763,645	286,870
Cash flows from financing activities:
Net proceeds from convertible senior notes	0	334,450
Common stock shares issued	0	772,300
Repurchases of long-term debt	(51,769)	0
Net cash (used in) provided by financing activities	(51,769)	1,106,750
Net (decrease) increase in cash and cash equivalents	(265,586)	1,209,829
Cash and cash equivalents at beginning of period	1,304,154	1,185,739
Cash and cash equivalents at end of period	$ 1,038,568	$ 2,395,568