Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 265,605	$ 261,669	$ 242,875	$ 246,046	$ 257,562	$ 265,842	$ 267,846	$ 256,377	$ 1,016,195	$ 1,047,627	$ 1,122,979
Crawford Claims Solutions
Disaggregation of Revenue [Line Items]
Revenues									356,447	339,837
Crawford Claims Solutions \| U.S.
Disaggregation of Revenue [Line Items]
Revenues									166,441	136,524
Crawford Claims Solutions \| U.K.
Disaggregation of Revenue [Line Items]
Revenues									65,855	63,715
Crawford Claims Solutions \| Canada
Disaggregation of Revenue [Line Items]
Revenues									34,020	47,712
Crawford Claims Solutions \| Australia
Disaggregation of Revenue [Line Items]
Revenues									47,481	45,417
Crawford Claims Solutions \| Europe
Disaggregation of Revenue [Line Items]
Revenues									28,298	28,915
Crawford Claims Solutions \| Rest of World
Disaggregation of Revenue [Line Items]
Revenues									14,352	17,554
Crawford TPA Solutions
Disaggregation of Revenue [Line Items]
Revenues									364,983	393,856
Crawford TPA Solutions \| U.S.
Disaggregation of Revenue [Line Items]
Revenues									293,446	315,241
Crawford TPA Solutions \| U.K.
Disaggregation of Revenue [Line Items]
Revenues									10,866	11,254
Crawford TPA Solutions \| Canada
Disaggregation of Revenue [Line Items]
Revenues									25,911	33,234
Crawford TPA Solutions \| Europe and Rest of World
Disaggregation of Revenue [Line Items]
Revenues									34,760	34,127
Crawford TPA Solutions \| Claims Management Services
Disaggregation of Revenue [Line Items]
Revenues									215,477	223,600
Crawford TPA Solutions \| Claims Management Services \| U.S.
Disaggregation of Revenue [Line Items]
Revenues									143,940	144,985
Crawford TPA Solutions \| Claims Management Services \| U.K.
Disaggregation of Revenue [Line Items]
Revenues									10,866	11,254
Crawford TPA Solutions \| Claims Management Services \| Canada
Disaggregation of Revenue [Line Items]
Revenues									25,911	33,234
Crawford TPA Solutions \| Claims Management Services \| Europe and Rest of World
Disaggregation of Revenue [Line Items]
Revenues									34,760	34,127
Crawford TPA Solutions \| Medical Management Services
Disaggregation of Revenue [Line Items]
Revenues									149,506	170,256
Crawford TPA Solutions \| Medical Management Services \| U.S.
Disaggregation of Revenue [Line Items]
Revenues									149,506	170,256
Crawford Specialty Solutions
Disaggregation of Revenue [Line Items]
Revenues									261,062	272,109
Crawford Specialty Solutions \| U.S.
Disaggregation of Revenue [Line Items]
Revenues									110,935	117,440
Crawford Specialty Solutions \| U.K.
Disaggregation of Revenue [Line Items]
Revenues									51,824	51,368
Crawford Specialty Solutions \| Canada
Disaggregation of Revenue [Line Items]
Revenues									29,232	33,492
Crawford Specialty Solutions \| Australia
Disaggregation of Revenue [Line Items]
Revenues									22,856	23,065
Crawford Specialty Solutions \| Europe
Disaggregation of Revenue [Line Items]
Revenues									20,728	20,550
Crawford Specialty Solutions \| Rest of World
Disaggregation of Revenue [Line Items]
Revenues									25,487	26,194
Crawford Specialty Solutions \| Global Technical Services
Disaggregation of Revenue [Line Items]
Revenues									176,302	181,317
Crawford Specialty Solutions \| Global Technical Services \| U.S.
Disaggregation of Revenue [Line Items]
Revenues									39,930	40,526
Crawford Specialty Solutions \| Global Technical Services \| U.K.
Disaggregation of Revenue [Line Items]
Revenues									45,212	45,803
Crawford Specialty Solutions \| Global Technical Services \| Canada
Disaggregation of Revenue [Line Items]
Revenues									23,066	25,981
Crawford Specialty Solutions \| Global Technical Services \| Australia
Disaggregation of Revenue [Line Items]
Revenues									21,927	22,273
Crawford Specialty Solutions \| Global Technical Services \| Europe
Disaggregation of Revenue [Line Items]
Revenues									20,680	20,540
Crawford Specialty Solutions \| Global Technical Services \| Rest of World
Disaggregation of Revenue [Line Items]
Revenues									25,487	26,194
Crawford Specialty Solutions \| Contractor Connection
Disaggregation of Revenue [Line Items]
Revenues									84,760	90,792
Crawford Specialty Solutions \| Contractor Connection \| U.S.
Disaggregation of Revenue [Line Items]
Revenues									71,005	76,914
Crawford Specialty Solutions \| Contractor Connection \| U.K.
Disaggregation of Revenue [Line Items]
Revenues									6,612	5,565
Crawford Specialty Solutions \| Contractor Connection \| Canada
Disaggregation of Revenue [Line Items]
Revenues									6,166	7,511
Crawford Specialty Solutions \| Contractor Connection \| Australia
Disaggregation of Revenue [Line Items]
Revenues									929	792
Crawford Specialty Solutions \| Contractor Connection \| Europe
Disaggregation of Revenue [Line Items]
Revenues									$ 48	$ 10