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Accrued Insurance Claims (Details)	12 Months Ended
	Dec. 31, 2017
Payables and Accruals [Abstract]
Percent of liabilities	30.70%

X

- Definition

Percentage of Liabilities From Insurance Plan

+ References

No definition available.

+ Details

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

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- References

No definition available.

+ Details

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