Organization and Significant Accounting Policies - Contract Estimates (Details) - USD ($)	3 Months Ended
Jul. 27, 2019	Jul. 28, 2018
Organization and Significant Accounting Policies
Material adjustment to any one contract	$ 0	$ 0

Refers to any one adjustment that was material to the contract.

No definition available.

Name:	avav_MaterialAdjustmentToContract
Namespace Prefix:	avav_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration