Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Premiums written - insurance
Direct	$ 245,467	$ 203,753
Assumed	(10,397)	(87,488)
Ceded	(27,885)	(38,587)
Net premiums written	207,185	77,678
(Increase) decrease in unearned premiums	(14,597)	89,687
Net premiums earned—insurance	192,588	167,365
Net investment income	26,873	34,713
Net (losses) gains on investments	(5,505)	67,459
Change in fair value of derivative instruments	(167,670)	(72,757)
Net losses on other financial instruments	(5,675)	(17,852)
Other income	1,771	1,440
Total revenues	42,382	180,368
Expenses:
Provision for losses	132,059	266,154
Change in PDR	(629)	(20)
Policy acquisition costs	17,195	28,046
Other operating expenses	80,100	50,154
Interest expense	15,881	14,148
Total expenses	244,606	358,482
Equity in net income (loss) of affiliates	1	(11)
Pretax loss	(202,223)	(178,125)
Income tax benefit	(14,723)	(8,893)
Net loss	$ (187,500)	$ (169,232)
Basic net loss per share	$ (1.30)	$ (1.28)
Diluted net loss per share	$ (1.30)	$ (1.28)
Weighted-average number of common shares outstanding—basic	144,355	132,465
Weighted-average number of common and common equivalent shares outstanding—diluted	144,355	132,465
Dividends per share	$ 0.0025	$ 0.0025