Document and Entity Information - shares
9 Months Ended
Jan. 27, 2018
Feb. 27, 2018
Document and Entity Information    
Entity Registrant Name AeroVironment Inc  
Entity Central Index Key 0001368622  
Document Type 10-Q  
Document Period End Date Jan. 27, 2018  
Amendment Flag false  
Current Fiscal Year End Date --04-30  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   23,905,986
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3