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Business Operations - Additional Information (Detail)
3 Months Ended 6 Months Ended
Dec. 31, 2014
Segment
Dec. 31, 2014
Segment
Business And Organization [Line Items]    
Number of segments   2us-gaap_NumberOfReportableSegments
Number of community hospitals 3ssy_NumberOfCommunityHospitals  
Healthcare Facilities Segment [Member]    
Business And Organization [Line Items]    
Number of operational areas   3ssy_NumberOfOperationalAreas
/ us-gaap_StatementBusinessSegmentsAxis
= ssy_HealthcareFacilitiesSegmentMember
Number of community hospitals   3ssy_NumberOfCommunityHospitals
/ us-gaap_StatementBusinessSegmentsAxis
= ssy_HealthcareFacilitiesSegmentMember
Number of states   2ssy_NumberOfStates
/ us-gaap_StatementBusinessSegmentsAxis
= ssy_HealthcareFacilitiesSegmentMember
Number of licensed beds at community hospital   183ssy_NumberOfLicensedBedsAtCommunityHospital
/ us-gaap_StatementBusinessSegmentsAxis
= ssy_HealthcareFacilitiesSegmentMember
Number of nursing homes   2ssy_NumberOfNursingHomes
/ us-gaap_StatementBusinessSegmentsAxis
= ssy_HealthcareFacilitiesSegmentMember
Number of licensed beds at nursing center   166ssy_NumberOfLicensedNursingCenterBeds
/ us-gaap_StatementBusinessSegmentsAxis
= ssy_HealthcareFacilitiesSegmentMember
Specialty Pharmacy Segment [Member]    
Business And Organization [Line Items]    
Number of operational areas   4ssy_NumberOfOperationalAreas
/ us-gaap_StatementBusinessSegmentsAxis
= ssy_SpecialtyPharmacySegmentMember