Statement of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
REVENUES
Premiums	$ 8,142	$ 6,493
Policy charges and fee income	201,667	198,864
Net investment income	44,501	58,540
Asset management fees and other income	57,110	64,775
Realized investment gains (losses), net:
Other-than-temporary impairments on fixed maturity securities	0	0
Other-than-temporary impairments on fixed maturity securities transferred to Other Comprehensive Income	0	0
Other realized investment gains (losses), net	(171)	(38,096)
Total realized investment gains (losses), net	(171)	(38,096)
TOTAL REVENUES	311,249	290,576
BENEFITS AND EXPENSES
Policyholders' benefits	28,943	18,618
Interest credited to policyholders' account balances	47,969	9,463
Amortization of deferred policy acquisition costs	38,983	(35,034)
General, administrative and other expenses	101,001	100,143
TOTAL BENEFITS AND EXPENSES	216,896	93,190
INCOME FROM OPERATIONS BEFORE INCOME TAXES	94,353	197,386
IncomeTaxExpenseBenefitAbstract
Income tax expense (benefit)	16,855	49,998
NET INCOME	77,498	147,388
Other Comprehensive Income (Loss), before Tax [Abstract]
Foreign currency translation adjustments	(1)	(15)
Unrealized investment gains (losses) for the period	20,190	(11,298)
Reclassification adjustment for (gains) losses included in net income	(806)	(2,713)
Net unrealized investment gains (losses)	19,384	(14,011)
Other comprehensive income (loss), before tax	19,383	(14,026)
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax	(1)	(5)
Other Comprehensive Income Loss Available For Sale Securities Tax	6,785	(4,904)
Other Comprehensive Income (Loss), Tax, Total	6,784	(4,909)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss)	12,599	(9,117)
COMPREHENSIVE INCOME	$ 90,097	$ 138,271