Consolidated Statements of Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues
Premium income	$ 446,395	$ 464,093	$ 422,153
Fee income	729,179	618,244	535,823
Other revenue	7,506	7,355	0
Net investment income	1,228,388	1,091,389	1,191,551
Realized investment gains (losses), net:
Total other-than-temporary losses	(4,334)	(372)	(5,138)
Other-than-temporary (gains) losses transferred to other comprehensive income	0	(434)	(61)
Other realized investment gains (losses), net	151,705	(13,330)	121,916
Total realized investment gains (losses), net	147,371	(14,136)	116,717
Total revenues	2,558,839	2,166,945	2,266,244
Benefits and expenses:
Life and other policy benefits	643,420	650,584	682,088
(Decrease) increase in future policy benefits	(56,073)	5,575	(66,697)
Interest paid or credited to contractholders	575,400	505,698	519,499
Provision for policyholders’ share of (losses) earnings on participating business	(1,041)	3,976	(580)
Dividends to policyholders	60,739	66,258	64,000
Total benefits	1,222,445	1,232,091	1,198,310
General insurance expenses	780,991	650,347	596,649
Amortization of DAC and VOBA	44,845	59,645	60,479
Interest expense	37,286	37,329	37,387
Total benefits and expenses	2,085,567	1,979,412	1,892,825
Income (loss) before income taxes	473,272	187,533	373,419
Income tax expense	155,903	58,791	135,305
Net income (loss)	$ 317,369	$ 128,742	$ 238,114