A schedule of allowance and reserve accounts including their beginning and ending balances, as well as a reconciliation by type of activity during the period. Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements.

No definition available.

Name:	hmsy_ValuationAndQualifyingAccountsDisclosureTableTextBlock
Namespace Prefix:	hmsy_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration