Document and Entity Information - USD ($)	12 Months Ended
	Mar. 31, 2020	May 22, 2020	Sep. 30, 2019
Document and Entity Information
Entity Registrant Name	VIRTUSA CORPORATION
Document Annual Report	true
Document Transition Report	false
Entity Central Index Key	0001207074
Document Type	10-K
Document Period End Date	Mar. 31, 2020
Trading Symbol	VRTU
Amendment Flag	false
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-3512883
Current Fiscal Year End Date	--03-31
Entity Address, Address Line One	132 Turnpike Rd
Entity Address, City or Town	Southborough
Entity Address, Postal Zip Code	01772
Entity Address, State or Province	MA
City Area Code	508
Local Phone Number	389-7300
Entity File Number	001-33625
Title of 12(b) Security	Common Stock
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Public Float			$ 914,194,732
Entity Common Stock, Shares Outstanding		30,132,817
Entity Shell Company	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY