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Organization and Significant Accounting Policies - Research and Development (Details) - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Apr. 30, 2021
Stock-Based Compensation      
Performance period 3 years    
Research and Development      
Revenue from customer funded research and development $ 97,880 $ 84,247 $ 74,218
Cost of sales 70,711 59,054 51,395
Research and Development With Federal Government      
Funding 11,225    
Reimbursement amount $ 21,833    
Reimbursements under the contract     3,424
Lease Accounting      
Option to extend true    
Option to terminate true    
Option to terminate period (in years) 3 years    
Advertising Costs      
Advertising expenses $ 494 451 675
Foreign currency transactions      
Foreign currency losses 119 242 1
Numerator for basic earnings per share:      
Net (loss) income attributable to AeroVironment, Inc. $ (176,212) $ (4,188) $ 23,331
Denominator for basic (loss) earnings per share:      
Weighted average common shares 25,044,881 24,685,534 24,049,851
Dilutive effect of employee stock options, restricted stock and restricted stock units     312,805
Denominator for diluted (loss) earbubgs per share 25,044,881 24,685,534 24,362,656
Number of anti-dilutive shares 146,000 224,000 3,000
Number of anti-dilutive due to loss 0 0  
Prepaid expenses and other current assets      
Cost to Fulfill a Contract with a Customer      
Costs to fulfill future performance obligations $ 0 $ 0  
Minimum      
Lease Accounting      
Remaining lease terms (in years) 1 year    
Maximum      
Lease Accounting      
Remaining lease terms (in years) 7 years    
Option to extend period (in years) 9 years