Other Employee Benefit Plans (Details)	12 Months Ended
Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Maximum percentage of employee contribution	15.00%

Defined Benefit Plan Maximum Percentage Of Employees Contribution.

No definition available.

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