Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Fixed maturities, available for sale, at fair value (amortized cost 2011, $4,984,389; 2010, $4,533,233)	$ 5,421,832	$ 4,715,537
Equity securities, available for sale, at fair value (cost 2011, $23,070; 2010, $20,765)	26,774	24,056
Short-term and other investments	228,902	334,030
Total investments	5,677,508	5,073,623
Cash	7,452	5,928
Deferred policy acquisition costs	265,041	272,825
Goodwill	47,396	47,396
Other assets	212,576	220,872
Separate Account (variable annuity) assets	1,273,764	1,375,656
Total assets	7,483,737	6,996,300
LIABILITIES AND SHAREHOLDERS' EQUITY
Fixed annuity contract liabilities	2,945,107	2,614,380
Interest-sensitive life contract liabilities	743,384	725,286
Unpaid claims and claim expenses	294,809	315,695
Future policy benefits	208,715	202,082
Unearned premiums	208,958	211,290
Total policy liabilities	4,400,973	4,068,733
Other policyholder funds	99,747	112,739
Other liabilities	384,583	321,486
Short-term debt	38,000	38,000
Long-term debt	199,744	199,679
Separate Account (variable annuity) liabilities	1,273,764	1,375,656
Total liabilities	6,396,811	6,116,293
Preferred stock, $0.001 par value, authorized 1,000,000 shares; none issued
Common stock, $0.001 par value, authorized 75,000,000 shares; issued, 2011, 61,803,462; 2010, 61,469,148	62	61
Additional paid-in capital	373,384	367,448
Retained earnings	875,069	823,579
Accumulated other comprehensive income (loss), net of taxes:
Net unrealized gains and losses on fixed maturities and equity securities	265,370	109,737
Net funded status of pension and other postretirement benefit obligations	(16,242)	(13,155)
Treasury stock, at cost, 2011, 22,028,030 shares; 2010, 21,813,196 shares	(410,717)	(407,663)
Total shareholders' equity	1,086,926	880,007
Total liabilities and shareholders' equity	$ 7,483,737	$ 6,996,300