Unaudited Condensed Consolidated Statements Of Operations And Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUES:
Gross premiums written	$ 765,200	$ 646,870	$ 1,602,281	$ 1,327,799
Premiums ceded	(183,978)	(152,160)	(326,007)	(244,136)
Net premiums written	581,222	494,710	1,276,274	1,083,663
Change in unearned premiums	(73,951)	(64,963)	(305,775)	(252,026)
Net premiums earned	507,271	429,747	970,499	831,637
Net investment income	37,635	42,451	71,023	89,660
Net realized investment (losses) gains	(115,198)	8,663	(35,561)	142,244
Total revenues	429,708	480,861	1,005,961	1,063,541
EXPENSES:
Net losses and loss expenses	275,128	240,380	530,306	465,582
Acquisition costs	64,617	51,588	121,302	98,726
General and administrative expenses	80,585	73,979	163,265	144,345
Amortization of intangible assets	634	634	1,267	1,267
Interest expense	14,188	14,001	28,322	27,757
Foreign exchange loss (gain)	490	(1,019)	3,008	(1,100)
Total expenses	435,642	379,563	847,470	736,577
Loss (income) before income taxes	(5,934)	101,298	158,491	326,964
Income tax (benefit) expense	(4,072)	4,947	1,361	12,457
NET (LOSS) INCOME	(1,862)	96,351	157,130	314,507
Other comprehensive loss:
Unrealized gains on investments arising during the period net of applicable deferred income tax benefit for three and six months ended June 30, 2012: $68 and $96, respectively	0	231	0	179
Reclassification adjustment for net realized investment gains included in net (loss) income, net of applicable income tax	0	(1,142)	0	(13,249)
Other comprehensive loss	0	(911)	0	(13,070)
COMPREHENSIVE (LOSS) INCOME	$ (1,862)	$ 95,440	$ 157,130	$ 301,437
PER SHARE DATA
Basic (loss) earnings per share	$ (0.05)	$ 2.66	$ 4.55	$ 8.56
Diluted (loss) earnings per share	$ (0.05)	$ 2.59	$ 4.45	$ 8.41
Weighted average common shares outstanding	34,422,553	36,288,596	34,517,552	36,746,881
Weighted average common shares and common share equivalents outstanding	34,422,553	37,189,722	35,316,595	37,395,559
Dividends paid per share	$ 0.000	$ 0.375	$ 0.375	$ 0.750