Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 27, 2021
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Entity Registrant Name	CRAWFORD & CO
Entity Central Index Key	0000025475
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity File Number	1-10356
Entity Incorporation, State or Country Code	GA
Entity Address, Address Line One	5335 Triangle Parkway
Entity Address, City or Town	Peachtree Corners
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30092
Entity Tax Identification Number	58-0506554
City Area Code	404
Local Phone Number	300-1000
Document Quarterly Report	true
Document Transition Report	false
Class A Non-Voting
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		30,673,403
Title of 12(b) Security	Class A Common Stock — $1.00 Par Value
Trading Symbol	CRD-A
Security Exchange Name	NYSE
Class B Voting
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		22,414,216
Title of 12(b) Security	Class B Common Stock — $1.00 Par Value
Trading Symbol	CRD-B
Security Exchange Name	NYSE