CONSOLIDATED CONDENSED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues
Premiums and policy fees	$ 860,586	$ 852,795
Reinsurance ceded	(316,076)	(310,327)
Net of reinsurance ceded	544,510	542,468
Net investment income	506,413	475,117
Realized investment gains (losses):
Derivative financial instruments	(69,878)	(73,499)
All other investments	22,841	81,728
Other-than-temporary impairment losses	(2,725)	(2,769)
Portion recognized in other comprehensive income (before taxes)	(5,106)	152
Net impairment losses recognized in earnings	(7,831)	(2,617)
Other income	109,242	103,716
Total revenues	1,105,297	1,126,913
Benefits and expenses
Benefits and settlement expenses, net of reinsurance ceded: (2017 -$263,377; 2016 -$299,873)	749,642	714,545
Amortization of deferred policy acquisition costs and value of business acquired	20,519	30,746
Other operating expenses, net of reinsurance ceded: (2017 -$51,017; 2016 -$48,311)	222,787	209,780
Total benefits and expenses	992,948	955,071
Income before income tax	112,349	171,842
Income tax expense	36,935	56,494
Net income	$ 75,414	$ 115,348