Statement of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUES
Premiums	$ 8,615	$ 5,301	$ 15,108	$ 11,067
Policy charges and fee income	201,497	199,806	400,361	401,430
Net investment income	58,934	69,177	117,474	143,070
Asset management fees and other income	57,893	65,974	122,668	133,975
Realized investment gains (losses), net:
Other-than-temporary impairments on fixed maturity securities	0	(1,520)	0	(3,131)
Other-than-temporary impairments on fixed maturity securities transferred to Other Comprehensive Income	0	1,437	0	2,979
Other realized investment gains (losses), net	(43,415)	35,243	(81,511)	(771)
Total realized investment gains (losses), net	(43,415)	35,160	(81,511)	(923)
TOTAL REVENUES	283,524	375,418	574,100	688,619
BENEFITS AND EXPENSES
Policyholders' benefits	27,685	41,459	46,303	32,202
Interest credited to policyholders' account balances	5,313	227,250	14,776	139,795
Amortization of deferred policy acquisition costs	(36,580)	340,993	(71,614)	109,847
General, administrative and other expenses	100,302	106,917	200,445	216,777
TOTAL BENEFITS AND EXPENSES	96,720	716,619	189,910	498,621
INCOME FROM OPERATIONS BEFORE INCOME TAXES	186,804	(341,201)	384,190	189,998
Income Tax Expense (Benefit) [Abstract]
Income tax expense (benefit)	43,134	(104,054)	93,132	54,798
NET INCOME	143,670	(237,147)	291,058	135,200
Other Comprehensive Income (Loss), before Tax [Abstract]
Foreign currency translation adjustments	0	(23)	(15)	(20)
Unrealized investment gains (losses) for the period	(81,560)	8,946	(92,858)	(4,843)
Reclassification adjustment for (gains) losses included in net income	(5,096)	(6,789)	(7,809)	(13,857)
Net unrealized investment gains (losses)	(86,656)	2,157	(100,667)	(18,700)
Other comprehensive income (loss), before tax	(86,656)	2,134	(100,682)	(18,720)
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax	0	(8)	(5)	(7)
Other Comprehensive Income Loss Available For Sale Securities Tax	(30,329)	755	(35,233)	(6,538)
Other Comprehensive Income (Loss), Tax, Total	(30,329)	747	(35,238)	(6,545)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss)	(56,327)	1,387	(65,444)	(12,175)
COMPREHENSIVE INCOME	$ 87,343	$ (235,760)	$ 225,614	$ 123,025