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Share-Based Compensation (Summary Of Other Information Of Stock Awards) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |
Total grant-date fair value of stock awards granted | $ 4,027 hcsg_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsGrantDateFairValue | $ 4,268 hcsg_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsGrantDateFairValue
Total fair value of stock awards vested during period | 2,719 hcsg_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOptionsVestedInPeriodTotalFairValue | 2,051 hcsg_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOptionsVestedInPeriodTotalFairValue
Total unrecognized compensation expense related to non-vested stock awards | $ 9,363 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized | $ 8,523 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

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- Definition Share based compensation arrangement by share based payment award, equity instruments options, vested in period, total fair value + References No definition available. + Details
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- Definition Share based compensation arrangement by share based payment award, options grants, grant date fair value + References No definition available. + Details
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- Details
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Balance Type: | na
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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