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Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2012 Segment	Dec. 31, 2011
Segment Reporting Information [Line Items]
Number of reportable segments	2
Percentage of revenue and income earned by housekeeping in one geographic segment	99.00%
Amounts due from major client	Less than 1% of our accounts receivable balance	Less than 1% of our accounts receivable balance

X

- Definition

Amounts due from Major Customer.

+ References

No definition available.

+ Details

Name:	hcsg_AmountsDueFromMajorCustomer
Namespace Prefix:	hcsg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of revenue and income earned in one geographic segment.

+ References

No definition available.

+ Details

Name:	hcsg_PercentageOfRevenueAndIncomeEarnedInOneGeographicSegment
Namespace Prefix:	hcsg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration