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Organization and Significant Accounting Policies - Research and Development (Details) - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Apr. 30, 2022
Stock-Based Compensation      
Performance period 3 years    
Research and Development      
Revenue from customer funded research and development $ 82,104 $ 97,880 $ 84,247
Cost of sales $ 62,181 70,711 59,054
Lease Accounting      
Option to extend true    
Option to terminate true    
Option to terminate period (in years) 3 years    
Advertising Costs      
Advertising expenses $ 457 494 451
Foreign currency transactions      
Foreign currency losses 22 119 242
Numerator for basic earnings per share:      
Net (loss) income attributable to AeroVironment, Inc. $ 59,666 $ (176,212) $ (4,188)
Denominator for basic earnings (loss) per share:      
Weighted average common shares 27,203,417 25,044,881 24,685,534
Dilutive effect of employee stock options, restricted stock and restricted stock units 124,576    
Denominator for diluted earnings (loss) per share 27,327,993 25,044,881 24,685,534
Number of anti-dilutive shares 1,000 146,000 224,000
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  
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