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Segment Information (Percentage Contribution Of Major Customers To Revenue) (Details)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Segment Reporting Information [Line Items]
Percentage of revenues from a major customer	7.00%	10.00%
Amounts due from major client	less than 1% of our accounts receivable balance		less than 1% of our accounts receivable balance
Housekeeping Services [Member]
Segment Reporting Information [Line Items]
Percentage of revenues from a major customer	9.00%	11.00%
Dietary Services [Member]
Segment Reporting Information [Line Items]
Percentage of revenues from a major customer	3.00%	6.00%

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 from a Major Customer.

+ References

No definition available.

+ Details

Name:	hcsg_PercentageOfRevenueFromMajorCustomer
Namespace Prefix:	hcsg_
Data Type:	num:percentItemType
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