XML 61 R47.htm IDEA: XBRL DOCUMENT v3.6.0.2

Description of Business and Significant Accounting Policies - Concentrations of Credit Risk and Significant Clients (Details)	12 Months Ended
	Dec. 31, 2016 financial_institution segment	Dec. 31, 2015 financial_institution
Concentration Risk [Line Items]
Number of financial institutions holding cash and cash equivalents and marketable securities | financial_institution	1	1
Number of reportable segments | segment	2
Minimum
Concentration Risk [Line Items]
Percentage of revenue from major customer	5.00%
Maximum
Concentration Risk [Line Items]
Percentage of revenue from major customer	9.50%

X

- Definition

Concentration Risk, Number of Financial Institutions Holding Cash and Cash Equivalents and Marketable Securities

+ References

No definition available.

+ Details

Name:	hcsg_ConcentrationRiskNumberofFinancialInstitutionsHoldingCashandCashEquivalentsandMarketableSecurities
Namespace Prefix:	hcsg_
Data Type:	xbrli:integerItemType
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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: