CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenues
Insurance premiums and contract charges earned	$ 182,812	$ 179,030	$ 544,927	$ 533,571
Net investment income	81,016	82,591	248,324	247,040
Net realized investment gains	1,308	3,511	8,789	8,673
Other income	617	388	2,302	2,244
Total revenues	265,753	265,520	804,342	791,528
Benefits, losses and expenses
Benefits, claims and settlement expenses	121,181	117,443	368,139	356,589
Interest credited	46,216	44,477	136,103	131,294
Policy acquisition expenses amortized	25,709	24,477	73,400	70,027
Operating expenses	39,647	39,875	115,611	119,033
Interest expense	2,652	3,543	9,610	10,635
Total benefits, losses and expenses	235,405	229,815	702,863	687,578
Income before income taxes	30,348	35,705	101,479	103,950
Income tax expense	8,364	10,348	29,037	29,775
Net income	$ 21,984	$ 25,357	$ 72,442	$ 74,175
Net income per share
Basic	$ 0.53	$ 0.61	$ 1.73	$ 1.79
Diluted	$ 0.52	$ 0.60	$ 1.71	$ 1.76
Weighted average number of shares and equivalent shares (in thousands)
Basic	41,852	41,514	41,965	41,353
Diluted	42,305	42,319	42,362	42,155
Net realized investment gains (losses)
Total other-than-temporary impairment losses on securities	$ (3,602)	$ (185)	$ (20,860)	$ (637)
Portion of losses recognized in other comprehensive income	0	0	(4,300)	0
Net other-than-temporary impairment losses on securities recognized in earnings	(3,602)	(185)	(16,560)	(637)
Realized gains, net	4,910	3,696	25,349	9,310
Total	$ 1,308	$ 3,511	$ 8,789	$ 8,673