Document and Entity Information - shares
6 Months Ended
Oct. 26, 2019
Nov. 26, 2019
Document and Entity Information    
Entity Registrant Name AEROVIRONMENT, INC.  
Entity File Number 001-33261  
Entity Central Index Key 0001368622  
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Oct. 26, 2019  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 95-2705790  
Amendment Flag false  
Trading Symbol AVAV  
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Security Exchange Name NASDAQ  
Entity Interactive Data Current Yes  
Current Fiscal Year End Date --04-30  
Entity Address, Address Line One 900 Innovators Way  
Entity Address, City or Town Simi Valley  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 93065  
City Area Code 805  
Local Phone Number 520-8350  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   23,990,616
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Small Business false