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Organization and Significant Accounting Policies - Accounts Receivable (Details) - USD ($) $ in Thousands	Apr. 30, 2021	Apr. 30, 2020
Accounts Receivable , Unbilled Receivables and Retentions
Retentions	$ 700	$ 717

X

- Definition

Represent the amounts withheld by customers until contract completion.

+ References

No definition available.

+ Details

Name:	avav_Retentions
Namespace Prefix:	avav_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_ReceivablesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration