Document and Entity Information - shares	9 Months Ended
	Mar. 31, 2020	May 13, 2020
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Registrant Name	SUNLINK HEALTH SYSTEMS INC
Entity Central Index Key	0000096793
Current Fiscal Year End Date	--06-30
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		6,899,321
Entity File Number	1-12607
Entity Incorporation, State or Country Code	OH
Entity Tax Identification Number	31-0621189
Entity Address, Address Line One	900 Circle 75 Parkway
Entity Address, Address Line Two	Suite 1120
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 Quarterly Report	true
Document Transition Report	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