Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Premium	$ 953,702	$ 897,484	$ 1,883,537	$ 1,788,457
Net investment income	231,568	227,425	460,559	454,098
Realized gains (losses)	(4,790)	5,154	(30,887)	6,483
Other income	404	398	729	639
Total revenue	1,180,884	1,130,461	2,313,938	2,249,677
Benefits and expenses:
Life policyholder benefits	459,845	410,961	881,515	820,653
Health policyholder benefits	183,496	170,511	362,207	340,528
Other policyholder benefits	7,475	7,890	15,063	15,938
Total policyholder benefits	650,816	589,362	1,258,785	1,177,119
Amortization of deferred acquisition costs	146,160	138,165	289,997	273,987
Commissions, premium taxes, and non-deferred acquisition costs	76,140	73,698	155,077	147,163
Other operating expense	72,714	79,044	151,296	151,837
Interest expense	22,813	21,432	43,621	42,710
Total benefits and expenses	968,643	901,701	1,898,776	1,792,816
Income before income taxes	212,241	228,760	415,162	456,861
Income tax benefit (expense)	(39,193)	(42,151)	(76,574)	(84,858)
Income from continuing operations	173,048	186,609	338,588	372,003
Loss (income) from discontinued operations, net of income taxes	0	(43)	0	(92)
Net income	$ 173,048	$ 186,566	$ 338,588	$ 371,911
Basic net income (loss) per common share:
Continuing operations (in dollars per share)	$ 1.63	$ 1.70	$ 3.17	$ 3.38
Discontinued operations (in dollars per share)	0	0	0	0
Total basic net income per common share (in dollars per share)	1.63	1.70	3.17	3.38
Diluted net income (loss) per common share:
Continuing operations (in dollars per share)	1.62	1.67	3.13	3.32
Discontinued operations (in dollars per share)	0	0	0	0
Total diluted net income per common share (in dollars per share)	$ 1.62	$ 1.67	$ 3.13	$ 3.32
Life premium
Revenue:
Premium	$ 670,822	$ 631,201	$ 1,320,452	$ 1,255,490
Health premium
Revenue:
Premium	282,877	266,282	563,082	532,966
Other premium
Revenue:
Premium	$ 3	$ 1	$ 3	$ 1