CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Securities, available-for-sale, at fair value:
Fixed maturities (amortized cost, 2014 - $4,803,526; 2013 - $4,948,543)	$ 4,758,526	$ 4,863,925
Equity securities	2,955	2,894
Total investment portfolio	4,761,481	4,866,819
Cash and cash equivalents	296,887	332,692
Restricted cash and cash equivalents (note 1)	17,444	17,440
Accrued investment income	31,811	31,660
Prepaid reinsurance premiums (note 4)	38,071	36,243
Reinsurance recoverable on loss reserves (note 4)	57,618	64,085
Reinsurance recoverable on paid losses (note 4)	9,031	10,425
Premium receivable	54,339	62,301
Home office and equipment, net	28,650	26,185
Deferred insurance policy acquisition costs	10,154	9,721
Other assets	159,509	143,819
Total assets	5,464,995	5,601,390
Liabilities:
Loss reserves (note 12)	2,834,559	3,061,401
Premium deficiency reserve (note 13)	43,288	48,461
Unearned premiums	160,097	154,479
Senior notes (note 3)	61,883	82,773
Convertible senior notes (note 3)	845,000	845,000
Convertible junior debentures (note 3)	389,522	389,522
Other liabilities	289,931	275,216
Total liabilities	4,624,280	4,856,852
Contingencies (note 5)
Shareholders' equity (note 14):
Common stock (one dollar par value, shares authorized 1,000,000; shares issued 2014 and 2013 - 340,047; shares outstanding 2014 - 338,516; 2013 - 337,758)	340,047	340,047
Paid-in capital	1,657,360	1,661,269
Treasury stock (shares at cost 2014 - 1,531; 2013 - 2,289)	(33,905)	(64,435)
Accumulated other comprehensive loss, net of tax (note 9)	(78,361)	(117,726)
Retained deficit	(1,044,426)	(1,074,617)
Total shareholders' equity	840,715	744,538
Total liabilities and shareholders' equity	$ 5,464,995	$ 5,601,390