Document and Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2024	Sep. 27, 2024	Dec. 29, 2023
Document Information [Line Items]
Document Type	10-K/A
Amendment Flag	true
Document Annual Report	true
Document Period End Date	Jun. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Entity Registrant Name	SunLink Health Systems, Inc.
Entity Central Index Key	0000096793
Current Fiscal Year End Date	--06-30
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Common Stock, Shares Outstanding		7,040,603
Entity Public Float			$ 5,065,824
Entity File Number	1-12607
Entity Incorporation, State or Country Code	GA
Entity Tax Identification Number	31-0621189
Entity Address, Address Line One	900 Circle 75 Parkway
Entity Address, Address Line Two	Suite 690
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30339
City Area Code	770
Local Phone Number	933-7000
Document Annual Report	true
Document Transition Report	false
Amendment Description	SunLink Health Systems, Inc. (the “Company”) is filing this Amendment No. 1 on Form 10-K/A (the “Amended 10-K”) to amend the Company’s Annual Report on Form 10-K for the fiscal year ended June 30, 2024 (the “Original 10-K”), originally filed with the Securities and Exchange Commission (the “SEC”) on September 30, 2024, solely to amend the Original 10-K to include the information required by Part III of Form 10-K which the Company previously had intended to incorporate by reference from a not yet filed definitive proxy statement relating to the Company’s 2024 Annual Meeting of Shareholders, and to update Part IV as required by Rule 12b-15. Except as described above, no other amendments are being made to the Original 10-K. This Amended 10-K does not reflect events occurring after the filing of the Original 10-K or modify or update the disclosure contained therein in any way other than as required to reflect the amendments discussed above. The Company has attached to this Amended 10-K updated certifications executed as of the date of this Amended 10-K by the Principal Executive Officer and Principal Financial Officer as required by Sections 302 and 906 of the Sarbanes Oxley Act of 2002. These updated certifications are attached as Exhibits 31.1/31 .2 and 32.1/32.2 to this Amended 10-K.
Document Financial Statement Error Correction [Flag]	false
Common Stock [Member]
Document Information [Line Items]
Trading Symbol	SSY
Title of 12(b) Security	Common Shares without par value
Security Exchange Name	NYSEAMER
Preferred Share Purchase Rights [Member]
Document Information [Line Items]
No Trading Symbol Flag	true
Title of 12(b) Security	Preferred Share Purchase Rights
Security Exchange Name	NONE