Document and Entity Information - shares
3 Months Ended
Jul. 28, 2018
Aug. 29, 2018
Document and Entity Information    
Entity Registrant Name AeroVironment Inc  
Entity Central Index Key 0001368622  
Document Type 10-Q  
Document Period End Date Jul. 28, 2018  
Amendment Flag false  
Current Fiscal Year End Date --04-30  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   23,930,623
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1