Basis of Reporting - Additional Information (Detail)	Jun. 30, 2012
Basis of Presentation [Line Items]
Number of wholly-owned subsidiaries operated by Company	2
Linen supplies amortization period (in months)	24

Number of wholly-owned subsidiaries operated by Company.

No definition available.

Name:	hcsg_NumberOfWhollyOwnedSubsidiariesOperatedByCompany
Namespace Prefix:	hcsg_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant