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Other Employee Benefit Plans (Details) | 12 Months Ended
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Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract] |
Maximum percentage of employee contribution | 15.00%

X
- Definition Defined Benefit Plan Maximum Percentage Of Employees Contribution. + References No definition available. + Details
Name: | hcsg_DefinedBenefitPlanMaximumPercentageOfEmployeesContribution
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_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration