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Organization and Significant Accounting Policies - Government Contracts (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 29, 2022 | Jan. 30, 2021 | Jan. 29, 2022 | Jan. 30, 2021
Numerator for basic earnings per share: |  |  |  |
Net income (loss) attributable to AeroVironment, Inc. | $ 10 | $ 211 | $ (11,446) | $ 12,385
Denominator for basic earnings per share: |  |  |  |
Weighted average common shares | 24,710,991 | 23,942,782 | 24,657,846 | 23,924,017
Dilutive effect of employee stock options, restricted stock and restricted stock units | 168,652 | 318,092 |  | 292,354
Denominator for diluted earnings (loss) per share | 24,879,643 | 24,260,874 | 24,657,846 | 24,216,371
Number of shares reserved for issuance | 0 |  | 0 |
Number of anti-dilutive shares | 20,554 | 0 | 237,909 | 24

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