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Share-Based Compensation - Summary of Other Information of Stock Awards (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Total grant-date fair value of stock options and awards granted	$ 5,202	$ 4,027
Total fair value of stock options and awards vested during period	$ 3,092	$ 2,719

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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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Namespace Prefix:	hcsg_
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Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

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