Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Premium income	$ 67,663	$ 76,818	$ 219,904	$ 231,745
Fee income	267,338	238,364	522,453	463,429
Other revenue	3,661	3,370	6,045	6,519
Net investment income	297,221	355,755	610,691	687,540
Realized investment gains (losses), net:
Total other-than-temporary gains (losses), net	(157)	0	(157)	(536)
Other realized investment gains (losses), net	22,221	42,013	10,467	73,819
Total realized investment gains (losses), net	22,064	42,013	10,310	73,283
Total revenues	657,947	716,320	1,369,403	1,462,516
Benefits and expenses:
Life and other policy benefits	166,995	170,492	337,283	357,129
Decrease in future policy benefits	(63,978)	(68,746)	(63,852)	(82,761)
Interest credited or paid to contractholders	157,544	152,460	311,490	300,770
Provision for policyholders’ share of losses on participating business	(62)	(249)	(64)	(418)
Dividends to policyholders	9,045	9,314	24,114	25,295
Total benefits	269,544	263,271	608,971	600,015
General insurance expenses	284,364	294,507	591,495	571,036
Amortization of DAC and VOBA	20,401	36,354	25,723	36,893
Interest expense	7,646	8,679	15,276	18,403
Total benefits and expenses	581,955	602,811	1,241,465	1,226,347
Income before income taxes	75,992	113,509	127,938	236,169
Income tax expense	26,168	39,710	43,286	63,748
Net income	$ 49,824	$ 73,799	$ 84,652	$ 172,421