Segments (Tables)

6 Months Ended

Jun. 30, 2011

Segments [Abstract]

Information by business segment

	U.S. Property		Professional		Accident		U.S. Surety							Corporate
Six months ended June 30, 2011	& Casualty		Liability		& Health		& Credit		International			Investing		& Other			Consolidated
Net earned premium	$	159,175	$	203,174	$	400,657	$	101,403	$	168,164		$	—	$	158		$	1,032,731
Other revenue		9,666		249		2,194		701		1,902			101,033		84			115,829
Segment revenue		168,841		203,423		402,851		102,104		170,066			101,033		242			1,148,560
Loss and LAE		92,428		138,015		291,605		29,687		130,393			—		(260	)		681,868
Other expense		55,575		34,032		61,995		55,252		64,020			—		36,034			306,908
Segment expense		148,003		172,047		353,600		84,939		194,413			—		35,774			988,776
Segment pretax earnings (loss)	$	20,838	$	31,376	$	49,251	$	17,165	$	(24,347	)	$	101,033	$	(35,532	)	$	159,784
Six months ended June 30, 2010
Net earned premium	$	173,625	$	218,153	$	374,487	$	98,620	$	149,932		$	—	$	1,155		$	1,015,972
Other revenue		19,095		438		1,717		328		4,711			106,306		858			133,453
Segment revenue		192,720		218,591		376,204		98,948		154,643			106,306		2,013			1,149,425
Loss and LAE		102,801		132,942		273,569		27,861		84,374			—		3,960			625,507
Other expense		54,601		38,305		59,059		53,692		59,905			—		35,578			301,140
Segment expense		157,402		171,247		332,628		81,553		144,279			—		39,538			926,647
Segment pretax earnings (loss)	$	35,318	$	47,344	$	43,576	$	17,395	$	10,364		$	106,306	$	(37,525	)	$	222,778

	U.S. Property		Professional		Accident		U.S. Surety						Corporate
Three months ended June 30, 2011	& Casualty		Liability		& Health		& Credit		International		Investing		& Other			Consolidated
Net earned premium	$	78,921	$	102,424	$	202,117	$	50,039	$	90,717	$	—	$	33		$	524,251
Other revenue		4,787		48		1,178		455		894		53,126		113			60,601
Segment revenue		83,708		102,472		203,295		50,494		91,611		53,126		146			584,852
Loss and LAE		44,944		71,752		146,747		14,648		56,221		—		(30	)		334,282
Other expense		27,169		16,928		31,577		26,997		32,355		—		18,639			153,665
Segment expense		72,113		88,680		178,324		41,645		88,576		—		18,609			487,947
Segment pretax earnings (loss)	$	11,595	$	13,792	$	24,971	$	8,849	$	3,035	$	53,126	$	(18,463	)	$	96,905
Three months ended June 30, 2010
Net earned premium	$	84,695	$	108,001	$	187,703	$	51,871	$	73,765	$	—	$	350		$	506,385
Other revenue		6,204		107		867		205		1,666		52,532		157			61,738
Segment revenue		90,899		108,108		188,570		52,076		75,431		52,532		507			568,123
Loss and LAE		50,989		65,342		135,349		15,487		28,769		—		3,050			298,986
Other expense		23,734		18,767		30,323		26,836		30,745		—		18,979			149,384
Segment expense		74,723		84,109		165,672		42,323		59,514		—		22,029			448,370
Segment pretax earnings (loss)	$	16,176	$	23,999	$	22,898	$	9,753	$	15,917	$	52,532	$	(21,522	)	$	119,753