Segment Information - Schedule of Revenues By Major Service Line (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue from External Customer
Revenues	$ 276,545	$ 242,875	$ 538,700	$ 488,921
Crawford TPA Solutions
Revenue from External Customer
Revenues	100,374	88,668	198,619	186,665
Crawford Platform Solutions
Revenue from External Customer
Revenues	51,127	36,686	93,526	69,116
Claims Management Services | Crawford TPA Solutions
Revenue from External Customer
Revenues	62,024	54,093	124,143	110,021
Medical Management Services | Crawford TPA Solutions
Revenue from External Customer
Revenues	38,350	34,575	74,476	76,644
Service
Revenue from External Customer
Revenues	267,457	234,416	520,638	471,947
Service | Crawford TPA Solutions
Revenue from External Customer
Revenues	100,374	88,668	198,619	186,665
Service | Crawford Platform Solutions
Revenue from External Customer
Revenues	51,127	36,686	93,526	69,116
Contractor Connection | Crawford Platform Solutions
Revenue from External Customer
Revenues	24,443	20,748	45,425	39,786
Network Business | Crawford Platform Solutions
Revenue from External Customer
Revenues	$ 26,684	$ 15,938	$ 48,101	$ 29,330