Segment Information (Revenues By Major Service Line) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue from External Customer [Line Items]
Revenues before reimbursements	$ 304,398	$ 288,216	$ 592,175	$ 563,565
Americas
Revenue from External Customer [Line Items]
Revenues before reimbursements	99,190	93,601	188,657	181,492
Broadspire
Revenue from External Customer [Line Items]
Revenues before reimbursements	73,693	66,706	143,365	131,464
Canada--all service lines | Americas
Revenue from External Customer [Line Items]
Revenues before reimbursements	29,205	32,815	58,241	64,508
Latin America/Caribbean--all service lines | Americas
Revenue from External Customer [Line Items]
Revenues before reimbursements	3,086	3,527	6,813	7,077
Subtotal U.S. Property & Casualty | U.S. Property and Casualty | Americas
Revenue from External Customer [Line Items]
Revenues before reimbursements	66,899	57,259	123,603	109,907
U.S. Contractor Connection | U.S. Property and Casualty | Americas
Revenue from External Customer [Line Items]
Revenues before reimbursements	16,131	14,221	28,852	27,130
Subtotal U.S. Claims Services | U.S. Property and Casualty | Americas
Revenue from External Customer [Line Items]
Revenues before reimbursements	50,768	43,038	94,751	82,777
U.S. Claims Field Operations | U.S. Property and Casualty | Americas
Revenue from External Customer [Line Items]
Revenues before reimbursements	19,928	25,235	39,980	51,955
U.S. Technical Services | U.S. Property and Casualty | Americas
Revenue from External Customer [Line Items]
Revenues before reimbursements	7,503	6,314	14,066	13,025
U.S. Catastrophe Services | U.S. Property and Casualty | Americas
Revenue from External Customer [Line Items]
Revenues before reimbursements	23,337	11,489	40,705	17,797
Workers' Compensation and Liability Claims Management | Broadspire
Revenue from External Customer [Line Items]
Revenues before reimbursements	30,352	27,720	59,537	56,004
Medical Management | Broadspire
Revenue from External Customer [Line Items]
Revenues before reimbursements	39,678	35,054	76,318	67,846
Risk Management Information Services | Broadspire
Revenue from External Customer [Line Items]
Revenues before reimbursements	$ 3,663	$ 3,932	$ 7,510	$ 7,614