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Business Acquisitions - Arcturus (Details) - USD ($)		2 Months Ended	12 Months Ended
	Feb. 19, 2021	Apr. 30, 2021	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2022
Fair value of assets acquired:
Goodwill		$ 314,205,000	$ 314,205,000	$ 6,340,000	$ 334,347,000
Arcturus UAV Inc.
Business Acquisitions
Total	$ 422,602,000
Cash on hand	150,218,000
Amount of representation and warranty insurance coverage	40,000,000
Revenue		15,837,000
Loss from operations		$ 1,869,000
Acquisition-related costs			6,015,000
Fair value of assets acquired:
Accounts receivable	6,050,000
Unbilled receivable	4,176,000
Inventories, net	21,701,000
Prepaid and other current assets	2,709,000
Property and equipment, net	38,739,000
Operating lease assets	11,429,000
Other assets	136,000
Goodwill	290,006,000
Total assets acquired	458,146,000
Fair value of liabilities assumed:
Accounts payable	3,085,000
Wages and related accruals	1,698,000
Customer advances	1,818,000
Other current liabilities	9,562,000
Operating lease liabilities	12,297,000
Other non-current liabilities	1,190,000
Deferred income taxes, net	5,869,000
Total liabilities assumed	35,519,000
Total identifiable net assets	422,627,000
Fair value of consideration transferred:
Cash consideration, net of cash acquired	350,243,000
Contingent consideration	72,384,000
Total paid	422,627,000
Supplemental Pro Forma Information (unaudited)
Revenue			478,579,000	454,769,000
Net income attributable to AeroVironment, Inc.			$ 27,572,000	$ 31,264,000
Arcturus UAV Inc. | Technology
Fair value of assets acquired:
Intangible assets	20,500,000
Arcturus UAV Inc. | Customer relationships
Fair value of assets acquired:
Intangible assets	62,700,000
Arcturus UAV Inc. | Adjustment Escrow
Business Acquisitions
Amount held in escrow	6,500,000				6,500,000
Amount of post-closing adjustments					509,000
Arcturus UAV Inc. | Indemnification Escrow
Business Acquisitions
Amount held in escrow	1,822,500				$ 1,822,500
Term loans | Arcturus UAV Inc.
Business Acquisitions
Amount of loan	200,000,000
Fair value of consideration transferred:
Contingent consideration	$ 50,000,000

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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Balance Type:	credit
Period Type:	instant

X

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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Balance Type:	credit
Period Type:	duration

X

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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- Details

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X

- Details

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