XML 94 R49.htm IDEA: XBRL DOCUMENT

Fair Value Measurements (Marketable Debt Securities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	$ 11,758hcsg_DebtSecuritiesAmortizedCost	$ 11,364hcsg_DebtSecuritiesAmortizedCost	$ 21,111hcsg_DebtSecuritiesAmortizedCost
Gross Unrealized Gains	48hcsg_DebtSecuritiesGrossUnrealizedGains	83hcsg_DebtSecuritiesGrossUnrealizedGains	220hcsg_DebtSecuritiesGrossUnrealizedGains
Gross Unrealized Losses	(7)	(2)	(9)
Estimated Fair Value	11,799us-gaap_MarketableSecuritiesCurrent	11,445us-gaap_MarketableSecuritiesCurrent	21,322us-gaap_MarketableSecuritiesCurrent
Other-than-temporary Impairments	0us-gaap_ImpairmentOfInvestments	0us-gaap_ImpairmentOfInvestments	0us-gaap_ImpairmentOfInvestments
Municipal Bonds — Available for Sale
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	11,758	11,364	21,111
Gross Unrealized Gains	48	83	220
Gross Unrealized Losses	(7)	(2)	(9)
Estimated Fair Value	11,799	11,445	21,322
Other-than-temporary Impairments	$ 0	$ 0	$ 0