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Stock-Based Compensation - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2011
May 31, 2011
May 31, 2014
May 31, 2013
May 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Aggregate intrinsic value of options exercised in period     $ 12,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue            
Fair value of options vested in period     2,400,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1            
Weighted average grant-date fair value for options granted     $ 9.18us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue $ 9.84us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue          
Expected dividend yield     0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate            
Stock-based compensation 4,382,000us-gaap_ShareBasedCompensation 1,648,000us-gaap_ShareBasedCompensation 12,696,000us-gaap_ShareBasedCompensation 8,367,000us-gaap_ShareBasedCompensation          
Stock Options                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized stock-based compensation expense 5,100,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
  5,100,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
           
Unrecognized stock-based compensation expense, weighted-average recognition period     2 years 3 months 18 days            
Stock-based compensation 666,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
571,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
2,089,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
2,094,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
         
Restricted Stock and Restricted Stock Units                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized stock-based compensation expense 13,900,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= abmd_RestrictedStockAndRestrictedStockUnitsMember
  13,900,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= abmd_RestrictedStockAndRestrictedStockUnitsMember
           
Unrecognized stock-based compensation expense, weighted-average recognition period     1 year 10 months 24 days            
Weighted average grant-date fair value for restricted stock and restricted stock units granted     $ 22.07us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= abmd_RestrictedStockAndRestrictedStockUnitsMember
$ 23.18us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= abmd_RestrictedStockAndRestrictedStockUnitsMember
         
Fair value of restricted stock and restricted stock units vested in period     9,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= abmd_RestrictedStockAndRestrictedStockUnitsMember
6,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= abmd_RestrictedStockAndRestrictedStockUnitsMember
         
Shares of award granted     674,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= abmd_RestrictedStockAndRestrictedStockUnitsMember
           
Shares of award vested     465,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= abmd_RestrictedStockAndRestrictedStockUnitsMember
           
Performance Based Restricted Stock and Restricted Stock Units                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized stock-based compensation expense 6,200,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
  6,200,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
           
Unrecognized stock-based compensation expense, weighted-average recognition period 1 year 8 months 12 days                
Shares of award granted         284,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
284,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
     
Shares of award granted, performance target met     234,000abmd_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceTargetAchieved
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
           
Shares of award granted, it is probable that the prescribed performance targets will be met     50,000abmd_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceTargetProbableToBeAchieved
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
           
Stock-based compensation $ 2,400,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
  $ 6,100,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
           
Performance Based Restricted Stock and Restricted Stock Units | Share Based Awards                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Shares of award granted             379,752us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
/ us-gaap_StatementScenarioAxis
= abmd_ShareBasedAwardsMember
268,988us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
/ us-gaap_StatementScenarioAxis
= abmd_ShareBasedAwardsMember
195,188us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
/ us-gaap_StatementScenarioAxis
= abmd_ShareBasedAwardsMember
Shares of award vested     149,805us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= abmd_PerformanceBasedRestrictedStockAndRestrictedStockUnitsMember
/ us-gaap_StatementScenarioAxis
= abmd_ShareBasedAwardsMember