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Business Acquisitions - ISG (Details) - USD ($)		2 Months Ended	12 Months Ended
	Feb. 23, 2021	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Business Acquisitions
Amortization expense			$ 26,558,000	$ 6,469,000	$ 2,822,000
Goodwill		$ 314,205,000	334,347,000	314,205,000	6,340,000
Intelligent Systems Group
Business Acquisitions
Period of goodwill deduction	15 years
Amortization expense		474,000
Total	$ 29,700,000
Contingent consideration paid	$ 6,000,000		6,000,000
Additional cash consideration paid			$ 2,000,000
Number of years to reach revenue targets	3 years
Revenue		$ 1,724,000
Acquisition-related costs				954,000
Other assets	$ 217,000
Goodwill	19,254,000
Total assets acquired	35,371,000
Fair value of consideration transferred:
Cash	29,700,000
Holdback	150,000
Contingent consideration	5,521,000
Total paid	35,371,000
Supplemental Pro Forma Information (unaudited)
Revenue				406,444,000	379,627,000
Net income attributable to AeroVironment, Inc.				$ 23,787,000	$ 39,025,000
Intelligent Systems Group | Technology
Business Acquisitions
Intangible assets	11,400,000
Intelligent Systems Group | Customer relationships
Business Acquisitions
Intangible assets	$ 4,500,000

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The period for goodwill arising from a business combination that is expected to be deductible for tax purposes.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to, instruments or interests issued or issuable in consideration for the business combination.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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