CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows - operating activities
Premiums collected	$ 598,443	$ 598,882
Policyholder benefits paid	(419,736)	(410,241)
Policy acquisition and other operating expenses paid	(218,464)	(208,248)
Income taxes paid	(8,719)	(10,061)
Investment income collected	277,178	271,717
Interest expense paid	(6,537)	(5,821)
Other	(4,691)	975
Net cash provided by operating activities	217,474	237,203
Fixed maturity securities
Purchases	(1,044,002)	(1,041,744)
Sales	360,246	315,531
Maturities, paydowns, calls and redemptions	577,425	691,169
Equity securities
Purchases	(8,578)	(27,219)
Sales and repayments	8,493	21,710
Limited partnership interests
Purchases	(84,444)	(87,613)
Sales	11,754	15,097
Change in short-term and other investments, net	(4,700)	(74,365)
Net cash used in investing activities	(183,806)	(187,434)
Cash flows - financing activities
Dividends paid to shareholders	(35,016)	(34,580)
Acquisition of treasury stock	(86)	(1,660)
Proceeds from exercise of stock options	3,191	3,815
Withholding tax payments on RSUs tendered	(2,190)	(2,745)
Annuity contracts: variable, fixed and FHLB funding agreements
Deposits	326,003	348,900
Benefits, withdrawals and net transfers to Separate Account (variable annuity) assets	(333,473)	(295,064)
Transfer of Company 401(k) assets to a third-party provider	0	(77,898)
Life policy accounts
Deposits	5,618	3,357
Withdrawals and surrenders	(3,766)	(3,340)
Change in bank overdrafts	4,855	(532)
Net cash used in financing activities	(34,864)	(59,747)
Net decrease in cash	(1,196)	(9,978)
Cash at beginning of period	7,627	16,670
Cash at end of period	$ 6,431	$ 6,692