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v3.25.1

Allowance for Doubtful Accounts - Additional Information (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 USD ($) category | Mar. 31, 2024 USD ($)
Receivables [Abstract] |  |
Interest income | $ | $ 1.3 | $ 1.1
Number of tiers receivable | category | 3 |

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- Definition Financing Receivable, Number Of Tiers Receivable + References No definition available. + Details
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Namespace Prefix: | hcsg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of interest income on financing receivable on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration