Document and Entity Information - USD ($)

12 Months Ended

Jun. 30, 2021

Aug. 06, 2021

Dec. 31, 2020

Cover [Abstract]

Entity Registrant Name

ACCURAY INCORPORATED

Entity Central Index Key

0001138723

Document Type

10-K

Document Period End Date

Jun. 30, 2021

Amendment Flag

false

Current Fiscal Year End Date

--06-30

Entity Well-known Seasoned Issuer

No

Entity Voluntary Filers

No

Entity Current Reporting Status

Yes

Trading Symbol

ARAY

Entity Filer Category

Accelerated Filer

Entity Public Float

$ 308,504,310

Entity Common Stock, Shares Outstanding

90,828,661

Document Fiscal Year Focus

2021

Document Fiscal Period Focus

FY

Entity Shell Company

false

Entity Small Business

false

Entity Emerging Growth Company

false

Entity File Number

001-33301

Entity Tax Identification Number

20-8370041

Entity Address, Address Line One

1310 Chesapeake Terrace

Entity Address, City or Town

Sunnyvale

Entity Address, State or Province

CA

Entity Address, Postal Zip Code

94089

City Area Code

408

Local Phone Number

716‑4600

Entity Incorporation, State or Country Code

DE

Entity Interactive Data Current

Yes

Document Annual Report

true

Document Transition Report

false

Title of 12(b) Security

Common Stock, $0.001 par value per share

Security Exchange Name

NASDAQ

ICFR Auditor Attestation Flag

true

Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Proxy Statement for the Registrant’s 2021 Annual Meeting of stockholders (the “2021 Proxy Statement”) are incorporated by reference in Part III of this Form 10‑K.