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Organization and Significant Accounting Policies - Government Contracts (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 30, 2021	Oct. 31, 2020	Oct. 30, 2021	Oct. 31, 2020
Numerator for basic earnings per share:
Net income (loss) attributable to AeroVironment, Inc.	$ 2,525	$ 2,094	$ (11,456)	$ 12,174
Denominator for basic earnings per share:
Weighted average common shares	24,641,614	23,936,950	24,630,838	23,914,737
Dilutive effect of employee stock options, restricted stock and restricted stock units	244,256	259,962		275,579
Denominator for diluted earnings (loss) per share	24,885,870	24,196,912	24,630,838	24,190,316
Number of shares reserved for issuance	0		0
Number of anti-dilutive shares	4,742	23	266,077	269

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