Document and Entity Information - USD ($)	12 Months Ended
	Mar. 31, 2019	Jun. 05, 2019	Sep. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Trading Symbol	CRVL
Entity Registrant Name	CORVEL CORP
Entity Central Index Key	0000874866
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		18,499,104
Entity Public Float			$ 565,792,000