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Joint Venture - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Schedule Of Equity Method Investments [Line Items]    
Currency translation adjustment $ (25) $ (159)
Joint venture    
Schedule Of Equity Method Investments [Line Items]    
Percentage of ownership interest in joint venture 49.00%  
Currency translation adjustment $ 900  
Accuray Asia    
Schedule Of Equity Method Investments [Line Items]    
Proportion of recognizing joint venture income or loss 49.00%