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Business Acquisitions (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 10, 2019
USD ($)
item
Oct. 31, 2020
USD ($)
Oct. 26, 2019
USD ($)
Oct. 27, 2018
USD ($)
Oct. 31, 2020
USD ($)
Oct. 26, 2019
USD ($)
Oct. 27, 2018
USD ($)
Apr. 30, 2020
USD ($)
Feb. 26, 2020
USD ($)
Business Acquisitions                  
Ownership interest acquired 100.00%                
Fair value of contingent consideration                 $ 2,500,000
Business Combinations, Assets Acquired and Liabilities Assumed at Acquisition Date                  
Goodwill   $ 6,340,000     $ 6,340,000     $ 6,340,000  
Fair value of consideration transferred:                  
Period of goodwill deduction   15 years              
Supplemental Pro forma Information                  
Amortization of Intangible Assets   $ 715,000 $ 755,000   1,424,000 $ 1,327,000      
SG&A                  
Business Acquisitions                  
Business acquisitions gain               832,000  
Supplemental Pro forma Information                  
Acquisition-related costs     18,000     359,000      
In-process research and development                  
Business Acquisitions                  
Total milestone achievement               1  
Pulse Aerospace, LLC                  
Business Acquisitions                  
Ownership interest acquired 100.00%                
Amount of cash less closing indebtedness and transaction costs $ 20,650,000                
Amount of retention to cover post closing indemnification claims 250,000                
Amount of holdback $ 1,250,000                
Number of months after closing holdback will be paid 18 months                
Number of research and development milestones | item 2                
Total milestone achievement $ 5,000,000                
Contingent consideration 1,703,000                
Business Combinations, Assets Acquired and Liabilities Assumed at Acquisition Date                  
Inventory 334,000                
Goodwill 6,340,000 $ 6,340,000     $ 6,340,000     $ 6,340,000  
Other assets and liabilities assumed (614,000)                
Total net identified assets acquired 21,880,000                
Fair value of consideration transferred:                  
Cash 18,677,000                
Holdback 1,250,000                
Retention $ 250,000                
Supplemental Pro forma Information                  
Revenue     83,271,000 $ 73,297,000   170,409,000 $ 152,610,000    
Net income attributable to AeroVironment     $ 7,526,000 $ 5,396,000   $ 23,721,000 $ 31,781,000    
Pulse Aerospace, LLC | Discount rate                  
Business Acquisitions                  
Measurement input 4.5                
Pulse Aerospace, LLC | Minimum                  
Business Acquisitions                  
Each milestone achievement $ 0                
Pulse Aerospace, LLC | Maximum                  
Business Acquisitions                  
Each milestone achievement 2,500,000                
Pulse Aerospace, LLC | Technology                  
Business Combinations, Assets Acquired and Liabilities Assumed at Acquisition Date                  
Intangible assets 14,950,000                
Pulse Aerospace, LLC | In-process research and development                  
Business Combinations, Assets Acquired and Liabilities Assumed at Acquisition Date                  
Intangible assets 550,000                
Pulse Aerospace, LLC | Non-compete agreements                  
Business Combinations, Assets Acquired and Liabilities Assumed at Acquisition Date                  
Intangible assets $ 320,000