CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows - operating activities
Premiums collected	$ 179,456	$ 172,588
Policyholder benefits paid	(131,090)	(127,823)
Policy acquisition and other operating expenses paid	(72,592)	(74,763)
Income taxes paid	690	11
Investment income collected	93,426	91,840
Interest expense paid	(256)	(63)
Other	2,492	11,008
Net cash provided by operating activities	72,126	72,798
Fixed maturity securities
Purchases	(308,450)	(318,629)
Sales	89,894	110,872
Maturities, paydowns, calls and redemptions	151,722	190,068
Purchases	(2,208)	(15,502)
Sales and repayments	2,048	5,489
Purchase of other invested assets	(13,856)	(24,177)
Net cash provided by (used in) short-term and other investments	47,146	(32,406)
Net cash used in investing activities	(33,704)	(84,285)
Cash flows - financing activities
Dividends paid to shareholders	(11,638)	(11,518)
Acquisition of treasury stock	(6)	0
Proceeds from exercise of stock options	1,136	723
Withholding tax payments on RSUs tendered	(2,061)	(2,532)
Annuity contracts: variable, fixed and FHLB funding agreements
Deposits	98,837	117,311
Benefits, withdrawals and net transfers to Separate Account (variable annuity) assets	(112,272)	(99,757)
Life policy accounts
Deposits	1,111	1,183
Withdrawals and surrenders	(1,329)	(1,066)
Change in bank overdrafts	4,124	(2,934)
Net cash (used in) provided by financing activities	(22,098)	1,410
Net increase (decrease) in cash	16,324	(10,077)
Cash at beginning of period	7,627	16,670
Cash at end of period	$ 23,951	$ 6,593