Joint Venture - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Mar. 31, 2025	Jun. 30, 2024
Schedule Of Equity Method Investments [Line Items]
Currency translation adjustment	$ 48	$ (9)
Joint venture
Schedule Of Equity Method Investments [Line Items]
Percentage of ownership interest in joint venture	49.00%
Currency translation adjustment	$ 900	600
Dividend declared		$ 2,500
Accuray Asia
Schedule Of Equity Method Investments [Line Items]
Proportion of recognizing joint venture income (loss)	49.00%