Consolidated Statements Of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	[1]	Dec. 31, 2013	[1]
Revenue:
Life premium	$ 2,073,065	$ 1,966,300		$ 1,885,332
Health premium	925,520	869,440		863,818
Other premium	135	400		532
Total premium	2,998,720	2,836,140		2,749,682
Net investment income	773,951	758,286		734,650
Realized investment gains (losses)	(8,791)	23,548		10,668
Other-than-temporary impairments	0	0		(2,678)
Other income	2,185	2,121		1,931
Total revenue	3,766,065	3,620,095		3,494,253
Benefits and expenses:
Life policyholder benefits	1,374,608	1,301,562		1,227,857
Health policyholder benefits	602,610	559,817		567,607
Other policyholder benefits	38,994	42,005		43,302
Total policyholder benefits	2,016,212	1,903,384		1,838,766
Amortization of deferred acquisition costs	445,625	415,914	[2]	400,869	[2]
Commissions, premium taxes, and non-deferred acquisition expenses	237,541	222,463		207,399
Other operating expense	223,858	217,531		211,443
Interest expense	76,642	76,126		80,461
Total benefits and expenses	2,999,878	2,835,418		2,738,938
Income before income taxes	766,187	784,677		755,315
Income taxes	(249,894)	(256,603)		(248,110)
Income from continuing operations	516,293	528,074		507,205
Discontinued operations:
Income from discontinued operations, net of tax	10,807	14,865	[2]	21,267	[2]
Net income	$ 527,100	$ 542,939	[2]	$ 528,472	[2]
Basic net income per common share:
Continuing operations (in dollars per share)	$ 4.13	$ 4.04		$ 3.68
Discontinued operations (in dollars per share)	0.08	0.11		0.16
Total basic net income per common share	4.21	4.15		3.84
Diluted net income per common share:
Continuing Operations (in dollars per share)	4.07	3.98		3.63
Discontinued operations (in dollars per share)	0.09	0.11		0.16
Total diluted net income per common share	$ 4.16	$ 4.09		$ 3.79

[1] Certain balances were adjusted to give effect to discontinued operations and the adoption of new accounting guidance as described in Note 1- Significant Accounting Policies under the caption "Low-Income Housing Tax Credit Interests."

[2] Certain balances were adjusted to give effect to discontinued operations as described in Note 1—Significant Accounting Policies.