Stock Incentive Plan and Employee Stock Purchase Plan - Schedule of Option Activity Under the Company's Incentive Plan (Details) - Employee Stock Option - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Jun. 30, 2023	Jun. 30, 2022
Options Outstanding
Balance at the beginning of the year (in shares)		7,053
Options granted (in shares)		0
Options exercised (in shares)		0
Options forfeited/expired (in shares)		(1,573)
Balance at the end of the year (in shares)		5,480	7,053
Vested or expected to vest at the end of the year (in shares)		5,480
Exercisable at the end of the year (in shares)		4,411
Weighted Average Exercise Price
Balance at the beginning of the year (in dollars per share)		$ 3.73
Options granted (in dollars per share)		0
Options exercised (in dollars per share)		0
Options forfeited/expired (in dollars per share)		4.9
Balance at the end of the year (in dollars per share)		3.4	$ 3.73
Vested or Expected to vest at the end of the year (in dollars per share)		3.4
Exercisable at the end of the year (in dollars per share)		$ 3.51
Weighted Average Remaining Contractual Life (In Years)
Balance		6 years 6 months 10 days	7 years 18 days
Vested or Expected to vest at the end of the year		6 years 6 months 10 days
Exercisable at the end of the year		6 years 1 month 24 days
Aggregate Intrinsic Value (in thousands)
Weighted average grant date fair value	[1]	$ 3,580	$ 0
Vested or Expected to vest at the end of the year	[1]	3,580
Exercisable at the end of the year	[1]	$ 2,364

[1] The aggregate intrinsic value represents the total pre-tax intrinsic value, which is computed based on the difference between the exercise price and the closing price of Accuray common stock of $3.87 and $1.96 on June 30, 2023 and June 30, 2022, respectively, The amount represents what would have been received by the option holders had all option holders exercised their options and sold the shares received upon exercise as of that date.