CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Insurance premiums and contract charges earned	$ 208,096	$ 205,610	$ 417,881	$ 408,608
Net investment income	93,458	97,101	186,258	188,965
Net investment gains (losses)	146,333	735	153,750	(919)
Other income	3,591	2,811	6,802	5,092
Total revenues	451,478	306,257	764,691	601,746
Benefits, losses and expenses
Benefits, claims and settlement expenses	152,692	168,278	292,076	311,840
Interest credited	53,594	51,071	106,516	101,105
DAC amortization expense	31,648	26,586	56,621	53,291
Operating expenses	55,252	50,218	109,305	98,387
Interest expense	3,312	3,291	6,615	6,464
Other expense	28,025	0	28,025	0
Total benefits, losses and expenses	324,523	299,444	599,158	571,087
Income before income taxes	126,955	6,813	165,533	30,659
Income tax expense	33,133	896	39,545	4,587
Net income	$ 93,822	$ 5,917	$ 125,988	$ 26,072
Net income per share
Basic (in usd per share)	$ 2.25	$ 0.14	$ 3.02	$ 0.63
Diluted (in usd per share)	$ 2.24	$ 0.14	$ 3.01	$ 0.63
Weighted average number of shares and equivalent shares
Basic (in shares)	41,762	41,600	41,685	41,531
Diluted (in shares)	41,921	41,735	41,851	41,659
Net investment gains (losses)
Total other-than-temporary impairment losses on securities	$ (34)	$ (1,177)	$ (271)	$ (1,287)
Portion of losses recognized in other comprehensive income (loss)	0	0	0	0
Net other-than-temporary impairment losses on securities recognized in earnings	(34)	(1,177)	(271)	(1,287)
Sales and other, net	142,067	1,789	146,905	3,992
Change in fair value - equity securities	3,441	(1,156)	6,948	(6,342)
Change in fair value and gains (losses) realized on settlements - derivative instruments	859	1,279	168	2,718
Net investment gains (losses)	$ 146,333	$ 735	$ 153,750	$ (919)