CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues
Insurance premiums and contract charges earned	$ 182,376	$ 179,138	$ 362,115	$ 354,541
Net investment income	83,995	81,405	167,308	164,449
Net realized investment gains	1,413	3,463	7,481	5,162
Other income	686	737	1,685	1,856
Total revenues	268,470	264,743	538,589	526,008
Benefits, losses and expenses
Benefits, claims and settlement expenses	132,939	127,158	246,958	239,146
Interest credited	45,350	43,730	89,887	86,817
Policy acquisition expenses amortized	24,007	22,517	47,691	45,550
Operating expenses	40,036	39,211	75,964	79,158
Interest expense	3,406	3,546	6,958	7,092
Total benefits, losses and expenses	245,738	236,162	467,458	457,763
Income before income taxes	22,732	28,581	71,131	68,245
Income tax expense	6,549	8,129	20,673	19,427
Net income	$ 16,183	$ 20,452	$ 50,458	$ 48,818
Net income per share
Basic	$ 0.39	$ 0.49	$ 1.20	$ 1.18
Diluted	$ 0.38	$ 0.48	$ 1.19	$ 1.16
Weighted average number of shares and equivalent shares (in thousands)
Basic	41,990	41,432	42,001	41,343
Diluted	42,425	42,310	42,366	42,213
Net realized investment gains (losses)
Total other-than-temporary impairment losses on securities	$ (14,969)	$ (452)	$ (17,258)	$ (452)
Portion of losses recognized in other comprehensive income	(4,300)	0	(4,300)	0
Net other-than-temporary impairment losses on securities recognized in earnings	(10,669)	(452)	(12,958)	(452)
Realized gains, net	12,082	3,915	20,439	5,614
Total	$ 1,413	$ 3,463	$ 7,481	$ 5,162