Consolidated Statement of Operations and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
REVENUES
Premiums	$ 54,706	$ (825,942)	$ 77,634
Policy charges and fee income	254,542	787,195	2,156,387
Net investment income	352,410	375,950	416,587
Asset administration fees	17,593	84,443	362,321
Other income	67,749	31,107	55,515
Realized investment gains (losses), net:
Other-than-temporary impairments on fixed maturity securities	(8,374)	(18,020)	(1,514)
Other-than-temporary impairments on fixed maturity securities transferred to other comprehensive income	995	343	51
Other realized investment gains (losses), net	(72,807)	776,126	(207,075)
Total realized investment gains (losses), net	(80,186)	758,449	(208,538)
Total revenues	666,814	1,211,202	2,859,906
BENEFITS AND EXPENSES
Policyholders’ benefits	(38,380)	(260,200)	299,150
Interest credited to policyholders’ account balances	168,391	301,220	374,211
Amortization of deferred policy acquisition costs	95,007	628,101	659,169
General, administrative and other expenses	271,533	220,733	1,030,014
Total benefits and expenses	496,551	889,854	2,362,544
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF OPERATING JOINT VENTURE	170,263	321,348	497,362
Total income tax expense (benefit)	(154,654)	(73,869)	(10,641)
INCOME (LOSS) FROM OPERATIONS BEFORE EQUITY IN EARNINGS OF OPERATING JOINT VENTURE	324,917	395,217	508,003
Equity in earnings of operating joint venture, net of taxes	(485)	0	0
NET INCOME (LOSS)	324,432	395,217	508,003
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	259	(8)	(507)
Unrealized investment gains (losses) for the period	164,482	74,040	(164,799)
Reclassification adjustment for (gains) losses included in net income	(26,998)	(64,540)	(9,902)
Net unrealized investment gains (losses)	137,484	9,500	(174,701)
Other comprehensive income (loss), before tax	137,743	9,492	(175,208)
Less: Income tax expense (benefit) related to:
Foreign currency translation adjustments	91	(3)	(177)
Net unrealized investment gains (losses)	43,281	3,325	(61,145)
Total	43,372	3,322	(61,322)
Other comprehensive income (loss), net of tax	94,371	6,170	(113,886)
Comprehensive income (loss)	$ 418,803	$ 401,387	$ 394,117