Consolidated Statements of Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011		Dec. 31, 2010
Revenues:
Premium income, net of premiums ceded of $50,303, $40,720 and $41,474	$ 422,153	$ 523,216		$ 805,622
Fee income	535,823	486,795		447,954
Net investment income	1,191,551	1,158,486		1,174,744
Realized investment gains (losses), net:
Total other-than-temporary losses	(5,138)	(19,467)		(96,648)
Other-than-temporary (gains) losses transferred to other comprehensive income	(61)	10,005		16,747
Other realized investment gains, net	121,916	33,957		55,406
Total realized investment gains (losses), net	116,717	24,495		(24,495)
Total revenues	2,266,244	2,192,992		2,403,825
Benefits and expenses:
Life and other policy benefits, net of reinsurance recoveries of $46,492, $36,876 and $30,678	682,088	645,567		628,895
Increase (decrease) in future policy benefits	(66,697)	18,828		320,167
Interest paid or credited to contractholders	519,499	529,349		518,918
Provision for policyholders' share of earnings on participating business	(580)	2,884		2,197
Dividends to policyholders	64,000	67,334		70,230
Total benefits	1,198,310	1,263,962		1,540,407
General insurance expenses	596,649	566,693		530,893
Amortization of deferred acquisition costs and value of business acquired	60,479	28,820		29,343
Interest expense	37,387	37,462		37,421
Total benefits and expenses, net	1,892,825	1,896,937		2,138,064
Income from continuing operations before income taxes	373,419	296,055		265,761
Income tax expense	135,305	93,818		68,627
Income from continuing operations	238,114	202,237		197,134
(Loss) from discontinued operations, net of income tax (expense) benefit of $ - , $ - and $900				(1,600)
Net income	$ 238,114	$ 202,237	[1]	$ 195,534	[1]

[1] As adjusted; See Note 1