CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows - operating activities
Premiums collected	$ 688,355	$ 662,729	$ 661,094
Policyholder benefits paid	(476,103)	(484,144)	(549,888)
Policy acquisition and other operating expenses paid	(251,293)	(230,072)	(241,138)
Federal income taxes paid	(33,672)	(14,444)	(4,130)
Investment income collected	311,712	303,385	280,963
Interest expense paid	(13,825)	(13,948)	(13,515)
Contribution to defined benefit pension plan trust fund	(3,103)	(2,534)	(5,926)
Other	(16,135)	(18,124)	(11,581)
Net cash provided by operating activities	205,936	202,848	115,879
Fixed maturities
Purchases	(1,212,937)	(1,448,219)	(1,356,092)
Sales	298,045	576,708	587,909
Maturities, paydowns, calls and redemptions	504,921	585,615	362,210
Purchase of other invested assets	(35,000)	(50,000)	0
Net cash (used in) provided by short-term and other investments	(153,355)	(18,902)	102,966
Net cash used in investing activities	(598,326)	(354,798)	(303,007)
Cash flows - financing activities
Dividends paid to shareholders	(32,550)	(22,541)	(18,990)
Acquisition of treasury stock	(3,889)	(15,735)	(2,047)
Exercise of stock options	19,336	5,421	2,127
Annuity contracts: variable, fixed and FHLB funding agreements
Deposits	673,057	417,600	433,896
Benefits, withdrawals and net transfers to Separate Account (variable annuity) assets	(278,350)	(220,803)	(219,415)
Life policy accounts
Deposits	1,636	1,881	2,078
Withdrawals and surrenders	(4,734)	(5,161)	(5,343)
Cash received related to repurchase agreements	25,848	0	0
Change in bank overdrafts	(4,956)	(983)	(3,654)
Net cash provided by financing activities	395,398	159,679	188,652
Net increase in cash	3,008	7,729	1,524
Cash at beginning of period	15,181	7,452	5,928
Cash at end of period	$ 18,189	$ 15,181	$ 7,452