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Business Acquisitions - Pulse (Details)
 11 Months Ended 12 Months Ended
Feb. 26, 2020
USD ($)
Jun. 10, 2019
USD ($)
item
Apr. 30, 2020
USD ($)
Apr. 30, 2022
USD ($)
Apr. 30, 2021
USD ($)
Apr. 30, 2020
USD ($)
Apr. 30, 2019
USD ($)
Business Acquisitions              
Holdback and retention payments       $ 7,814,000 $ 1,492,000    
Business Combinations, Assets Acquired and Liabilities Assumed at Acquisition Date              
Goodwill     $ 6,340,000 334,347,000 314,205,000 $ 6,340,000  
Supplemental Pro forma Information              
Amortization of Intangible Assets       $ 26,558,000 6,469,000 2,822,000  
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          
Holdback and retention payments         $ 1,492,000    
Number of research and development milestones | item   2          
Each milestone achievement $ 2,500,000            
Total milestone achievement   $ 5,000,000          
Contingent consideration paid   $ 1,703,000          
Period of goodwill deduction   15 years          
Business Combinations, Assets Acquired and Liabilities Assumed at Acquisition Date              
Goodwill   $ 6,340,000          
Inventory   334,000          
Other assets, net of liabilities assumed   (614,000)          
Total assets acquired   21,880,000          
Fair value of consideration transferred:              
Cash   18,677,000          
Holdback   1,250,000          
Retention   250,000          
Contingent consideration   1,703,000          
Total paid   $ 21,880,000          
Supplemental Pro forma Information              
Revenue     6,607,000     367,523,000 $ 316,878,000
Net income attributable to AeroVironment, Inc.           41,481,000 $ 43,204,000
Amortization of Intangible Assets     $ 2,461,000        
Pulse Aerospace, LLC | Discount rate              
Business Acquisitions              
Measurement input   4.5          
Pulse Aerospace, LLC | SG&A              
Business Acquisitions              
Business acquisitions gain           $ 832,000  
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          
Pulse Aerospace, LLC | Minimum              
Business Acquisitions              
Each milestone achievement   0          
Pulse Aerospace, LLC | Maximum              
Business Acquisitions              
Each milestone achievement   $ 2,500,000