Revenue - Schedule of Remaining Performance Obligations related to Warranty (Details) - Long-term Warranty and Service $ in Thousands	Dec. 31, 2021 USD ($)
2022	$ 16,584
2023	25,674
2024	15,130
Thereafter	$ 13,149

Amount of transaction price allocated to performance obligation that has not been recognized as revenue in year three and thereafter.

No definition available.

Name:	aray_RevenueRemainingPerformanceObligationInYearThreeAndThereafter
Namespace Prefix:	aray_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant