CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows - operating activities
Premiums collected	$ 392,103	$ 392,715
Policyholder benefits paid	(272,769)	(274,256)
Policy acquisition and other operating expenses paid	(141,620)	(141,913)
Income taxes paid	(7,393)	(8,068)
Investment income collected	184,749	185,546
Interest expense paid	(6,190)	(5,738)
Other	2,429	6,167
Net cash provided by operating activities	151,309	154,453
Fixed maturity securities
Purchases	(551,984)	(723,354)
Sales	190,023	229,690
Maturities, paydowns, calls and redemptions	383,090	491,739
Equity securities
Purchases	(6,028)	(24,190)
Sales and repayments	5,783	18,196
Limited partnership interests
Purchases	(33,031)	(45,284)
Sales	9,457	6,699
Change in short-term and other investments, net	(109,711)	(41,528)
Net cash used in investing activities	(112,401)	(88,032)
Cash flows - financing activities
Dividends paid to shareholders	(23,320)	(23,041)
Acquisition of treasury stock	(86)	0
Proceeds from exercise of stock options	2,460	3,130
Withholding tax payments on RSUs tendered	(2,155)	(2,604)
Annuity contracts: variable, fixed and FHLB funding agreements
Deposits	199,074	234,133
Benefits, withdrawals and net transfers to Separate Account (variable annuity) assets	(218,694)	(200,845)
Transfer of Company 401(k) assets to a third-party provider	0	(77,898)
Life policy accounts
Deposits	3,163	2,240
Withdrawals and surrenders	(2,525)	(2,287)
Change in bank overdrafts	3,795	87
Net cash used in financing activities	(38,288)	(67,085)
Net increase (decrease) in cash	620	(664)
Cash at beginning of period	7,627	16,670
Cash at end of period	$ 8,247	$ 16,006