Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Fixed maturities
Held-to-maturity, at amortized cost (fair value $1,668 in 2013 and $1,681 in 2012)	$ 1,638	$ 1,655
Available-for-sale, at fair value (amortized cost $2,666,902 in 2013 and $2,657,800 in 2012)	2,807,582	2,808,078
Trading securities, at fair value (amortized cost $12,470 in 2013 and $12,645 in 2012)	13,738	13,353
Equity securities
Available-for-sale, at fair value (cost $67,464 in 2013 and $66,892 in 2012)	195,677	177,127
Trading securities, at fair value (cost $1,772 in 2013 and $1,772 in 2012)	2,131	2,018
Mortgage loans	4,581	4,633
Policy loans	6,566	6,671
Other long-term investments	30,646	30,028
Short-term investments	800	800
Total Investments	3,063,359	3,044,363
Cash and cash equivalents	101,948	107,466
Accrued investment income	30,079	30,375
Premiums receivable (net of allowance for doubtful accounts of $888 in 2013 and $866 in 2012)	207,920	188,289
Deferred policy acquisition costs	113,088	105,300
Property and equipment (primarily land and buildings, at cost, less accumulated depreciation of $34,060 in 2013 and $34,093 in 2012)	42,328	43,090
Reinsurance receivables and recoverables	120,140	114,399
Prepaid reinsurance premiums	3,218	2,963
Income taxes receivable	2,386	16,536
Goodwill and intangible assets	27,624	28,259
Other assets	12,600	13,613
TOTAL ASSETS	3,724,690	3,694,653
Liabilities
Property and casualty insurance	971,239	971,911
Life insurance	1,484,362	1,498,176
Unearned premiums	326,320	311,650
Accrued expenses and other liabilities	157,801	164,111
Deferred income taxes	26,826	19,628
TOTAL LIABILITIES	2,966,548	2,965,476
Stockholders’ Equity
Common stock, $0.001 par value; authorized 75,000,000 shares; 25,266,295 and 25,227,463 shares issued and outstanding in 2013 and 2012, respectively	25	25
Additional paid-in capital	209,472	208,536
Retained earnings	444,035	425,428
Accumulated other comprehensive income, net of tax	104,610	95,188
TOTAL STOCKHOLDERS’ EQUITY	758,142	729,177
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 3,724,690	$ 3,694,653