Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Premiums written—insurance:
Direct	$ 1,033,421	$ 892,983	$ 755,758
Assumed	(11,183)	(88,991)	(11,162)
Ceded	(81,421)	(117,362)	(37,349)
Net premiums written	940,817	686,630	707,247
(Increase) decrease in unearned premiums	(109,923)	52,352	48,778
Net premiums earned—insurance	830,894	738,982	756,025
Net investment income	108,088	114,337	163,520
Net (losses) gains on investments	(149,720)	184,888	202,177
Total other-than-temporary impairment (“OTTI”) losses	(3)	(3)	(1,202)
Losses recognized in other comprehensive income (loss)	0	0	0
Net impairment losses recognized in earnings	(3)	(3)	(1,202)
Change in fair value of derivative instruments	(31,771)	(144,025)	628,395
Net (losses) gains on other financial instruments	(4,736)	(82,269)	193,329
Gain on sale of affiliate	0	7,708	0
Other income	6,235	5,790	5,599
Total revenues	758,987	825,408	1,947,843
Expenses:
Provision for losses	567,134	959,171	1,296,521
Change in PDR	(1,901)	41	(7,092)
Policy acquisition costs	41,664	61,876	52,763
Other operating expenses	284,528	196,672	175,810
Interest expense	74,618	51,832	61,394
Total expenses	966,043	1,269,592	1,579,396
Equity in net income (loss) of affiliates	1	(13)	65
Pretax (loss) income	(207,055)	(444,197)	368,512
Income tax (benefit) provision	(10,070)	7,271	66,362
Net (loss) income	$ (196,985)	$ (451,468)	$ 302,150
Basic net (loss) income per share	$ (1.18)	$ (3.41)	$ 2.28
Diluted net (loss) income per share	$ (1.18)	$ (3.41)	$ 2.26
Weighted-average number of common shares outstanding—basic	166,366	132,533	132,372
Weighted-average number of common and common equivalent shares outstanding—diluted	166,366	132,533	133,863
Dividends per share	$ 0.01	$ 0.01	$ 0.01