Business Combinations - Additional Information (Detail) (USD $)
|
12 Months Ended |
9 Months Ended |
12 Months Ended |
0 Months Ended |
|
Dec. 31, 2014
|
Sep. 30, 2014
|
Dec. 31, 2013
|
Dec. 31, 2014
|
Dec. 31, 2012
|
Business Acquisition [Line Items] |
|
|
|
|
|
Purchase price allocation for goodwill |
$ 41,914,000us-gaap_Goodwill |
|
$ 35,746,000us-gaap_Goodwill |
$ 41,914,000us-gaap_Goodwill |
$ 29,299,000us-gaap_Goodwill |
Net tangible assets include deferred revenue book value |
3,200,000hstm_NetTangibleAssetsIncludeDeferredRevenueBookValue |
|
|
3,200,000hstm_NetTangibleAssetsIncludeDeferredRevenueBookValue |
|
Net tangible assets include deferred revenue estimated fair value |
1,700,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue |
|
|
1,700,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue |
|
Write-down of deferred revenue |
1,500,000hstm_WriteDownOfDeferredRevenue |
|
|
|
|
Health Care Compliance Strategies, Inc. [Member] |
|
|
|
|
|
Business Acquisition [Line Items] |
|
|
|
|
|
Acquisition date of assets |
Mar. 03, 2014 |
|
|
|
|
Consideration paid for acquisition in cash |
12,800,000us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
|
|
Consideration paid for acquisition in shares |
81,614us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
|
|
Additional consideration paid for acquisition in cash |
750,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
750,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
Contingent upon achievement of certain financial targets and business outcome, term |
1 year |
|
|
|
|
Transaction related costs |
515,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
515,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
Purchase price allocation for goodwill |
6,200,000us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
6,200,000us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
Purchase price allocation for identifiable intangible assets |
8,400,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
8,400,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
Purchase price allocation for net tangible assets |
2,600,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
2,600,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
Transaction costs associated with the HCCS acquisition |
|
365,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
150,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
Purchase price allocation for deferred tax assets |
625,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssetsNoncurrent / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
625,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssetsNoncurrent / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
Purchase price allocation for liabilities |
2,700,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
2,700,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
Accrual for contingent consideration |
600,000us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
|
600,000us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = hstm_HealthCareComplianceStrategiesIncMember |
|
Decision Critical, Inc. [Member] |
|
|
|
|
|
Business Acquisition [Line Items] |
|
|
|
|
|
Acquisition date of assets |
Jun. 29, 2012 |
|
|
|
|
Consideration paid for acquisition in cash |
3,400,000us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
|
|
Consideration paid for acquisition in shares |
22,124us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
|
|
Additional consideration paid for acquisition in cash |
300,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
300,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
Contingent upon achievement of certain financial targets and business outcome, term |
3 years |
|
|
|
|
Consideration paid for acquisition |
|
|
|
188,000us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
Transaction related costs |
203,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
203,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
Purchase price allocation for goodwill |
2,900,000us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
2,900,000us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
Purchase price allocation for identifiable intangible assets |
1,500,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
1,500,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
Purchase price allocation for net tangible assets |
291,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
291,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
Purchase price allocation for deferred tax liabilities |
456,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
456,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
Net tangible assets include deferred revenue book value |
548,000hstm_NetTangibleAssetsIncludeDeferredRevenueBookValue / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
548,000hstm_NetTangibleAssetsIncludeDeferredRevenueBookValue / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
Net tangible assets include deferred revenue estimated fair value |
356,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
356,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
Write-down of deferred revenue |
192,000hstm_WriteDownOfDeferredRevenue / us-gaap_BusinessAcquisitionAxis = hstm_DecisionCriticalMember |
|
|
|
|
Sy. Med Development, Inc. [Member] |
|
|
|
|
|
Business Acquisition [Line Items] |
|
|
|
|
|
Acquisition date of assets |
Oct. 19, 2012 |
|
|
|
|
Consideration paid for acquisition in cash |
7,400,000us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
|
|
Consideration paid for acquisition in shares |
34,060us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
|
|
Consideration paid for acquisition |
1,250,000us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
|
|
Transaction related costs |
165,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
165,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
Purchase price allocation for goodwill |
5,400,000us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
5,400,000us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
Purchase price allocation for identifiable intangible assets |
6,500,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
6,500,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
Purchase price allocation for net tangible assets |
294,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
294,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
Purchase price allocation for deferred tax liabilities |
2,800,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
2,800,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
Net tangible assets include deferred revenue book value |
1,100,000hstm_NetTangibleAssetsIncludeDeferredRevenueBookValue / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
1,100,000hstm_NetTangibleAssetsIncludeDeferredRevenueBookValue / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
Net tangible assets include deferred revenue estimated fair value |
229,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
229,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
Write-down of deferred revenue |
916,000hstm_WriteDownOfDeferredRevenue / us-gaap_BusinessAcquisitionAxis = hstm_SyMedDevelopmentMember |
|
|
|
|
Baptist Leadership Group [Member] |
|
|
|
|
|
Business Acquisition [Line Items] |
|
|
|
|
|
Acquisition date of assets |
Sep. 09, 2013 |
|
|
|
|
Consideration paid for acquisition in cash |
7,400,000us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
|
|
|
Consideration paid for acquisition in shares |
15,230us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
|
|
|
Transaction related costs |
145,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
|
145,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
Purchase price allocation for goodwill |
6,300,000us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
|
6,300,000us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
Purchase price allocation for identifiable intangible assets |
1,600,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
|
1,600,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
Purchase price allocation for net tangible assets |
28,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
|
28,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
Net tangible assets include deferred revenue book value |
508,000hstm_NetTangibleAssetsIncludeDeferredRevenueBookValue / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
|
508,000hstm_NetTangibleAssetsIncludeDeferredRevenueBookValue / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
Net tangible assets include deferred revenue estimated fair value |
254,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
|
254,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
Write-down of deferred revenue |
$ 254,000hstm_WriteDownOfDeferredRevenue / us-gaap_BusinessAcquisitionAxis = hstm_BaptistLeadershipGroupMember |
|
|
|
|