Derivative Financial Instruments - Additional Information (Details) - contract	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Outstanding foreign currency contracts (number of contracts)	0	0
Maximum
Length of forward contracts	3 months

Represents the period of time relating to forward contracts.

No definition available.

Name:	aray_LengthOfForwardContractsPeriod
Namespace Prefix:	aray_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration