Schedule II Financial Information of Registrant Parent Company Statement of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Cash flows from operating activities:
Net (loss) income	$ (196,985)		$ (451,468)		$ 302,150
Change in other assets	(44,804)		(7,706)		(65,388)
Change in other liabilities	69,151		19,205		46,744
Net cash provided by (used in) operating activities	(664,937)		(510,500)		(897,775)
Cash flows from investing activities:
Proceeds from sales of fixed-maturity investments available for sale	22,248		79,534		136,217
Purchases of trading securities	(518,327)		(5,895,099)		(5,456,565)
(Purchases) sales and redemptions of short-term investments, net	(651,506)		484,347		276,082
Purchases of property and equipment, net	(5,802)		(910)		(2,976)
Cash flows from financing activities:
Dividends paid	(1,632)		(1,335)		(1,330)
Redemption of long-term debt	(79,372)		(153,261)		(160,000)
Issuance of common stock	299,410		0		0
Increase (decrease) in cash	(7,697)		(4,034)		15,255
Cash, beginning of period	31,555		35,589		20,334
Cash, end of period	23,858		31,555		35,589
Parent Company
Cash flows from operating activities:
Net (loss) income	(196,985)		(451,468)		302,150
Net losses (gains) on other investments	3,004		(1,821)		(24,603)
Losses (gains) on the repurchase of long-term debt	3,952		(16,175)		0
Equity in undistributed net loss (income) of subsidiaries and affiliates (1)	150,090	[1]	505,267	[1]	(495,954)	[1]
Increase (decrease) in federal income taxes	6,583		(7,145)		49,396
Depreciation and other amortization, net	30,286		18,603		17,185
Change in other assets	23,301		(17,708)		(3,801)
Change in other liabilities	85,450		25,336		90,895
Net cash provided by (used in) operating activities	105,681		54,889		(64,732)
Cash flows from investing activities:
Sales/redemptions of trading securities	9,000		153,992		151,840
Purchases of trading securities	0		(3)		(32,825)
(Purchases) sales and redemptions of short-term investments, net	(496,979)		41,042		156,665
Sales of other invested assets, net	21,473		8,709		0
Purchases of property and equipment, net	(647)		(1,124)		(523)
Capital contributions to subsidiaries and affiliates (1)	(233,391)	[1]	(100,384)	[1]	(50,587)	[1]
Net cash (used in) provided by investing activities	(700,544)		102,232		224,570
Cash flows from financing activities:
Dividends paid	(1,632)		(1,335)		(1,330)
Proceeds/payments related to issuance or exchange of debt, net	377,783		0		0
Redemption of long-term debt	(79,372)		(153,261)		(160,000)
Issuance of common stock	299,410		0		0
Net cash provided by (used in) financing activities	596,189		(154,596)		(161,330)
Increase (decrease) in cash	1,326		2,525		(1,492)
Cash, beginning of period	2,978		453		1,945
Cash, end of period	$ 4,304		$ 2,978		$ 453

[1] See Note D.