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Organization and Significant Accounting Policies - Contract Estimates (Details)
 3 Months Ended 9 Months Ended
Jan. 28, 2023
USD ($)
contract
$ / shares
Jan. 28, 2023
USD ($)
contract
$ / shares
Jan. 29, 2022
USD ($)
contract
$ / shares
Apr. 30, 2022
USD ($)
Material adjustment to any one contract $ 0   $ 0  
Number of active contracts | contract 1 1 1  
Forward Loss Reserve $ 1,561,000 $ 1,561,000   $ 1,064,000
Net income (loss) per share attributable to AeroVironment-diluted | $ / shares $ (0.03) $ (0.63) $ (0.46)  
TMS contract        
Amount of revised aggregate impact of adjustments in contract estimates on revenue related to performance obligations satisfied or partially satisfied in previous periods   $ 2,448,000    
Number of active contracts | contract 2 2    
MUAS ISR Contract        
Number of Contracts with forward loss reserves | contract 2      
Forward Loss Reserve $ (2,424,000) $ (2,424,000)    
MUAS Product Contract        
Forward Loss Reserve $ 1,593,000 $ 1,593,000