CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Securities, available-for-sale, at fair value:
Fixed maturities (amortized cost, 2012 - $4,793,698; 2011 - $5,700,894)	$ 4,923,846	$ 5,820,900
Equity securities	2,918	2,747
Total investment portfolio	4,926,764	5,823,647
Cash and cash equivalents	730,404	995,799
Accrued investment income	42,417	55,666
Reinsurance recoverable on loss reserves (note 4)	117,859	154,607
Reinsurance recoverable on paid losses	16,726	19,891
Premium receivable	68,638	71,073
Home office and equipment, net	26,891	28,145
Deferred insurance policy acquisition costs (note 2)	10,451	7,505
Other assets	68,740	59,897
Total assets	6,008,890	7,216,230
Liabilities:
Loss reserves (note 12)	4,004,001	4,557,512
Premium deficiency reserve (note 13)	84,132	134,817
Unearned premiums	140,137	154,866
Senior notes (note 3)	99,891	170,515
Convertible senior notes (note 3)	345,000	345,000
Convertible junior debentures (note 3)	370,164	344,422
Other liabilities	297,589	312,283
Total liabilities	5,340,914	6,019,415
Contingencies (note 5)
Shareholders' equity (note 14):
Common stock (one dollar par value, shares authorized 680,000; shares issued 2012 and 2011 - 205,047; shares outstanding 2012 - 202,032; 2011 - 201,172)	205,047	205,047
Paid-in capital	1,133,107	1,135,821
Treasury stock (shares at cost 2012 - 3,015; 2011 - 3,875)	(104,959)	(162,542)
Accumulated other comprehensive income, net of tax (note 9)	38,373	30,124
Retained deficit	(603,592)	(11,635)
Total shareholders' equity	667,976	1,196,815
Total liabilities and shareholders' equity	$ 6,008,890	$ 7,216,230