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Other Contingencies (Details) (USD $)
1 Months Ended 12 Months Ended 1 Months Ended
Jul. 31, 2011
Dec. 31, 2014
financial_covenant
state
Jan. 31, 2013
Jan. 01, 2015
Short-term Debt [Line Items]        
Bank line of credit   $ 125,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity    
Borrowings under line of credit   0us-gaap_LineOfCredit    
Change in bank line of credit   (51,520,000)hcsg_LineofCreditFacilityIncreaseDecreaseRemainingBorrowingCapacity    
Number of financial covenants   1hcsg_LineOfCreditFacilityNumberOfFinancialCovenants    
Line of credit expiration date   Dec. 18, 2018    
Number of states in which entity operates   48us-gaap_NumberOfStatesInWhichEntityOperates    
Percentage of reduction to Medicare payments to nursing centers 11.10%hcsg_PercentageOfReductionToMedicarePaymentsToNursingCenters      
Maximum [Member]        
Short-term Debt [Line Items]        
Percentage of reduction of Medicare payments to plans and providers     2.00%hcsg_PercentageOfReductionOfMedicarePaymentsToPlansAndProviders
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
Standby Letter of Credit [Member]        
Short-term Debt [Line Items]        
Irrevocable standby letter of credit, outstanding   51,520,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_LetterOfCreditMember
   
Standby Letter of Credit [Member] | Subsequent Event [Member]        
Short-term Debt [Line Items]        
Irrevocable standby letter of credit, outstanding       $ 71,415,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember