Consolidated Balance Sheet (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Investments
Fixed maturity securities - available for sale, at fair value (amortized cost: 2012-$5,712,890; 2011 - $5,385,432)	$ 6,097,866	$ 5,718,834
Fixed maturity securities - held to maturity, at amortized cost (fair value: $163,136)	0	161,102
Equity securities-available for sale, at fair value (cost: $92,580)	93,660	0
Short-term investments, at cost, which approximates fair value	217,087	133,917
Other investments, at fair value (amortized cost: 2012 and 2011-$38,230)	37,720	35,897
Total investments	6,446,333	6,049,750
Cash	63,184	104,550
Restricted cash	202,642	229,821
Premium, claims and other receivables	679,569	688,732
Reinsurance recoverables	1,056,999	1,056,068
Ceded unearned premium	255,078	222,300
Ceded life and annuity benefits	59,803	61,061
Deferred policy acquisition costs	204,387	189,633
Goodwill	873,627	872,814
Other assets	167,519	122,549
Total assets	10,009,141	9,597,278
LIABILITIES
Loss and loss adjustment expense payable	3,755,699	3,658,317
Life and annuity policy benefits	59,803	61,061
Reinsurance, premium and claims payable	359,260	366,499
Unearned premium	1,147,121	1,031,034
Deferred ceding commissions	71,767	62,364
Notes payable	590,867	478,790
Accounts payable and accrued liabilities	681,367	665,231
Total liabilities	6,665,884	6,323,296
SHAREHOLDERS' EQUITY
Common stock, $1.00 par value; 250,000 shares authroized (shares issued: 2012-123,449 and 2011-122,720; outstanding: 2012-100,737 and 2011-104,101)	123,449	122,720
Additional paid-in capital	1,019,570	1,001,308
Retained earnings	2,574,411	2,429,818
Accumulated other comprehensive income	259,776	227,659
Treasury stock, at cost (shares: 2012-22,712 and 2011-18,619)	(633,949)	(507,523)
Total shareholders' equity	3,343,257	3,273,982
Total liabilities and shareholders' equity	$ 10,009,141	$ 9,597,278