CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Securities, available-for-sale, at fair value:
Fixed maturities (amortized cost, 2013 - $5,078,232; 2012 - $4,185,937)	$ 5,017,288	$ 4,227,339
Equity securities	2,884	2,936
Total investment portfolio	5,020,172	4,230,275
Cash and cash equivalents	458,070	1,027,625
Restricted cash and cash equivalents (note 1)	60,348	0
Accrued investment income	34,250	27,243
Reinsurance recoverable on loss reserves (note 4)	70,621	104,848
Reinsurance recoverable on paid losses	14,377	15,605
Premium receivable	65,262	67,828
Home office and equipment, net	26,411	27,190
Deferred insurance policy acquisition costs	12,518	11,245
Other assets	95,509	62,465
Total assets	5,857,538	5,574,324
Liabilities:
Loss reserves (note 12)	3,352,994	4,056,843
Premium deficiency reserve (note 13)	57,035	73,781
Unearned premiums	149,369	138,840
Senior notes (note 3)	82,758	99,910
Convertible senior notes (note 3)	845,000	345,000
Convertible junior debentures (note 3)	389,522	379,609
Other liabilities	277,814	283,401
Total liabilities	5,154,492	5,377,384
Contingencies (note 5)
Shareholders' equity (note 14):
Common stock (one dollar par value, shares authorized 1,000,000; shares issued 2013 - 340,047; 2012 - 205,047; shares outstanding 2013 - 337,758; 2012 - 202,032)	340,047	205,047
Paid-in capital	1,659,914	1,135,296
Treasury stock (shares at cost 2013 - 2,289; 2012 - 3,015)	(64,435)	(104,959)
Accumulated other comprehensive loss, net of tax (note 9)	(159,270)	(48,163)
Accumulated deficit	(1,073,210)	(990,281)
Total shareholders' equity	703,046	196,940
Total liabilities and shareholders' equity	$ 5,857,538	$ 5,574,324