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Goodwill and Other Intangible Assets (Changes in the Carrying Values of Goodwill by Reportable Operating Segment) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Goodwill [Roll Forward] |
December 31, 2013 | $ 40,183 us-gaap_Goodwill
Adjustment to purchase price allocation | 4,255 us-gaap_GoodwillPurchaseAccountingAdjustments
December 31, 2014 | 44,438 us-gaap_Goodwill
Housekeeping [Member] |
Goodwill [Roll Forward] |
December 31, 2013 | 38,122 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hcsg_HousekeepingSegmentMember
Adjustment to purchase price allocation | 4,255 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = hcsg_HousekeepingSegmentMember
December 31, 2014 | 42,377 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hcsg_HousekeepingSegmentMember
Dietary [Member] |
Goodwill [Roll Forward] |
December 31, 2013 | 2,061 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hcsg_DietarySegmentMember
Adjustment to purchase price allocation | 0 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = hcsg_DietarySegmentMember
December 31, 2014 | $ 2,061 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hcsg_DietarySegmentMember

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e961-128460 + Details
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Period Type: | duration

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- Details
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |