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Percentage Contribution of Major Customer to Revenue (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenue, Major Customer [Line Items]
Percentage of revenues from a major customer	7.00%	9.00%	7.00%	9.00%
Housekeeping Services
Revenue, Major Customer [Line Items]
Percentage of revenues from a major customer	9.00%	10.00%	9.00%	11.00%
Dietary Services
Revenue, Major Customer [Line Items]
Percentage of revenues from a major customer	3.00%	5.00%	3.00%	5.00%

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

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- Details

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