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Quantitative Information about Inputs and Valuation Methodologies Used for Fair Value Measurements Classified in Level 3 (Detail) (USD $)
In Thousands, unless otherwise specified
 1 Months Ended 9 Months Ended
Jul. 31, 2014
Dec. 31, 2014
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Contingent consideration   6,365us-gaap_BusinessCombinationContingentConsiderationLiability
Discount rate 22.50%us-gaap_FairValueInputsDiscountRate  
Level 3    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Contingent consideration   6,365us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
ECP Entwicklungsgesellschaft mbH    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Contingent consideration   6,365us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= abmd_EcpEntwickslungsgesellschaftMbhMember
ECP Entwicklungsgesellschaft mbH | Level 3 | Probability weighted income approach    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Contingent consideration   6,365us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= abmd_EcpEntwickslungsgesellschaftMbhMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
ECP Entwicklungsgesellschaft mbH | Level 3 | Probability weighted income approach | Contingent Consideration | Minimum    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Milestone date   2018
Discount rate   8.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_BusinessAcquisitionAxis
= abmd_EcpEntwickslungsgesellschaftMbhMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
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/ us-gaap_FairValueByLiabilityClassAxis
= abmd_ContingentConsiderationMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Probability of occurrence   0.00%abmd_FairValueInputsProbabilityOfOccurrence
/ us-gaap_BusinessAcquisitionAxis
= abmd_EcpEntwickslungsgesellschaftMbhMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByLiabilityClassAxis
= abmd_ContingentConsiderationMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
ECP Entwicklungsgesellschaft mbH | Level 3 | Probability weighted income approach | Contingent Consideration | Maximum    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Milestone date   2021
Discount rate   12.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_BusinessAcquisitionAxis
= abmd_EcpEntwickslungsgesellschaftMbhMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
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/ us-gaap_FairValueByLiabilityClassAxis
= abmd_ContingentConsiderationMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
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Probability of occurrence   100.00%abmd_FairValueInputsProbabilityOfOccurrence
/ us-gaap_BusinessAcquisitionAxis
= abmd_EcpEntwickslungsgesellschaftMbhMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
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/ us-gaap_FairValueByLiabilityClassAxis
= abmd_ContingentConsiderationMember
/ us-gaap_RangeAxis
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/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember