Joint Venture - Summary of Financial Information of Joint Ventures (Operations Data) (Details) - USD ($) $ in Thousands	3 Months Ended							9 Months Ended
	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Schedule Of Equity Method Investments [Line Items]
Revenue		$ 101,132			$ 118,060				$ 312,262		$ 329,313
Gross profit		29,074			38,718				104,469		116,282
Net income		$ (6,342)	$ (9,621)	$ (2,969)	$ 599	$ (1,874)	$ (5,449)		$ (18,932)		$ (6,724)
CNNC Accuray (Tianjin) Medical Technology Co. Ltd.
Schedule Of Equity Method Investments [Line Items]
Revenue	$ 45,173		36,831					$ 99,485		$ 87,554
Gross profit	7,401		6,931					16,014		15,246
Net income	2,091		4,159					2,098		1,991
Net income attributable to the Company	$ 1,024		$ 2,027					$ 1,028		$ 960