CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues
Insurance premiums and contract charges earned	$ 209,785	$ 202,998
Net investment income	92,800	91,864
Net investment gains (losses)	7,417	(1,654)
Other income	3,211	2,281
Total revenues	313,213	295,489
Benefits, losses and expenses
Benefits, claims and settlement expenses	139,384	143,562
Interest credited	52,922	50,035
DAC amortization expense	24,973	26,705
Operating expenses	54,053	48,169
Interest expense	3,303	3,172
Total benefits, losses and expenses	274,635	271,643
Income before income taxes	38,578	23,846
Income tax expense	6,412	3,691
Net income	$ 32,166	$ 20,155
Net income per share
Basic (in usd per share)	$ 0.77	$ 0.49
Diluted (in usd per share)	$ 0.77	$ 0.48
Weighted average number of shares and equivalent shares
Basic (in shares)	41,610	41,497
Diluted (in shares)	41,785	41,653
Net investment gains (losses)
Total other-than-temporary impairment losses on securities	$ (236)	$ (110)
Portion of losses recognized in other comprehensive income (loss)	0	0
Net other-than-temporary impairment losses on securities recognized in earnings	(236)	(110)
Sales and other, net	4,838	2,203
Change in fair value - equity securities	3,506	(5,186)
Change in fair value and gains (losses) realized on settlements - derivative instruments	(691)	1,439
Net investment gains (losses)	$ 7,417	$ (1,654)