Summary of Significant Accounting Policies - Deferred Revenue (Details)	12 Months Ended
Jun. 30, 2017
Deferred Revenue and Deferred Cost of Revenue
Maximum expected period to classify deferred revenue as current liabilities and deferred costs of revenue as current assets	1 year

Represents the maximum expected period to classify deferred revenue as current liabilities and deferred cost of revenue as current assets.

No definition available.

Name:	aray_MaximumExpectedRealizationPeriodToClassifyDeferredRevenueAsCurrentLiabilitiesAndDeferredCostOfRevenueAsCurrentAssets
Namespace Prefix:	aray_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration