Consolidated Statements Of Operations And Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
REVENUES:
Premiums earned	$ 546,050	$ 569,597	$ 1,588,536	$ 1,560,778
Net investment income	63,363	$ 83,446	206,869	215,869
Net realized capital gains (losses):
Other-than-temporary impairments on fixed maturity securities	$ (10,502)		$ (43,433)	$ (199)
Other-than-temporary impairments on fixed maturity securities transferred to other comprehensive income (loss)
Realized gain on sale of subsidiary	$ 94,704		$ 94,704
Other net realized capital gains (losses)	(111,193)	$ (160)	(100,445)	$ 121,103
Total net realized capital gains (losses)	(121,695)	(160)	(49,174)	120,904
Other income (expense)	10,828	(3,739)	38,950	(15,576)
Total revenues	498,546	649,144	1,785,181	1,881,975
CLAIMS AND EXPENSES:
Incurred losses and loss adjustment expenses	370,754	380,580	1,002,513	980,143
Commission, brokerage, taxes and fees	72,151	79,168	241,635	240,584
Other underwriting expenses	56,953	50,623	157,069	137,032
Corporate expenses	1,637	4,620	5,031	5,398
Interest, fee and bond issue cost amortization expense	8,859	12,292	26,576	28,539
Total claims and expenses	510,354	527,283	1,432,824	1,391,696
INCOME (LOSS) BEFORE TAXES	(11,808)	121,861	352,357	490,279
Income tax expense (benefit)	(7,149)	21,720	107,306	145,498
NET INCOME (LOSS)	(4,659)	100,141	245,051	344,781
Other comprehensive income (loss), net of tax :
Unrealized appreciation (depreciation) ("URA(D)") on securities arising during the period	(29,878)	(26,221)	(49,866)	13,678
Less: reclassification adjustment for realized losses (gains) included in net income (loss)	11,625	(696)	48,951	1,459
Total URA(D) on securities arising during the period	(18,253)	(26,917)	(915)	15,137
Foreign currency translation adjustments	$ (27,473)	$ (7,472)	$ (44,636)	$ (8,587)
Benefit plan actuarial net gain (loss) for the period
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)	$ 1,556	$ 825	$ 4,769	$ 2,366
Total benefit plan net gain (loss) for the period	1,556	825	4,769	2,366
Total other comprehensive income (loss), Net of tax	(44,170)	(33,564)	(40,782)	8,916
COMPREHENSIVE INCOME (LOSS)	$ (48,829)	$ 66,577	$ 204,269	$ 353,697