Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net cash provided by operating activities	$ 711,382	$ 559,668
Proceeds from sales, maturities and redemptions of investments:
Fixed maturities, available-for-sale	3,920,591	4,829,009
Mortgage loans on real estate	322,326	310,664
Limited partnership interests, other corporation interests and other investments	6,759	9,386
Purchases of investments:
Fixed maturities, available-for-sale	(4,313,849)	(4,138,915)
Mortgage loans on real estate	(689,122)	(626,431)
Limited partnership interests, other corporation interests and other investments	(17,697)	(5,491)
Net change in short-term investments	(517,840)	(1,988,191)
Net change in policy loans	(9,677)	5,980
Purchases of furniture, equipment, and software	(30,867)	(33,405)
Net cash used in investing activities	(1,329,376)	(1,637,394)
Cash flows from financing activities:
Contract deposits	2,251,508	2,756,047
Contract withdrawals	(1,565,225)	(1,500,963)
Net change in due to/from parent and affiliates	(9,760)	(19,924)
Dividends paid	(145,301)	(125,691)
Capital contribution	76,429	0
Payments for and interest paid on financing element derivatives, net	(3,290)	(5,281)
Contingent consideration	0	(14,233)
Net change in commercial paper borrowings	819	6,600
Net change in book overdrafts	15,659	121
Employee taxes paid for withheld shares	(671)	(489)
Income tax benefit on share-based compensation	0	468
Net cash provided by financing activities	620,168	1,096,655
Net increase in cash and cash equivalents	2,174	18,929
Cash and cash equivalents, beginning of year	18,321	34,362
Cash and cash equivalents, end of period	20,495	53,291
Net cash received (paid) during the year for:
Income taxes	(17,449)	(24,118)
Interest	(16,447)	(21,685)
Non-cash investing and financing transactions during the years:
Share-based compensation expense	1,156	1,637
Fair value of assets acquired in settlement of fixed maturity investments	$ 9,323	$ 0