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Document and Entity Information - shares
3 Months Ended
Sep. 30, 2016
Nov. 10, 2016
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2016  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q1  
Trading Symbol SSY  
Entity Registrant Name SUNLINK HEALTH SYSTEMS INC  
Entity Central Index Key 0000096793  
Current Fiscal Year End Date --06-30  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   9,443,408