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Commitments and Contingencies (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Restructuring reserve $ 982us-gaap_RestructuringReserve $ 1,074us-gaap_RestructuringReserve
Employment agreements, contract term 1 year  
Portamedic Service Line [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of offices 4hh_DiscontinuedOperationsContinuingInvolvementEntityPrimaryLesseeNumberOfOffices
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= hh_PortamedicServiceLineMember		  
Number of operating leases 5hh_DiscontinuedOperationsContinuingInvolvementEntityPrimaryLesseeNumberOfOperatingLeases
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= hh_PortamedicServiceLineMember