XML 66 R60.htm IDEA: XBRL DOCUMENT v2.4.1.9
Commitments and Contingencies - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2015
sqft
Dec. 31, 2014
Commitments And Contingencies [Line Items]    
Operating lease office space, in square feet 143,000us-gaap_AreaOfRealEstateProperty  
Lease expiry period June 2019  
Percentage of sublicensing income 10.00%mdvn_PercentageOfSublicensingIncome  
Upfront fee paid $ 12,000,000us-gaap_OtherResearchAndDevelopmentExpense  
Total consideration under current statement of work   14,800,000mdvn_EstimateOfDevelopmentAndManufacturingServicesAmount
Partial payment consideration under current statement of work 700,000mdvn_DevelopmentAndManufacturingServicesAmountPaid  
CureTech Ltd [Member]    
Commitments And Contingencies [Line Items]    
Milestone payment 5,000,000mdvn_FutureMilestonePaymentForTechnologyTransferUnderManufacturingServicesAgreement
/ us-gaap_BusinessAcquisitionAxis
= mdvn_CureTechLtdMember
 
CureTech Ltd [Member] | MDV 9300 [Member]    
Commitments And Contingencies [Line Items]    
Upfront fee paid   3,000,000us-gaap_OtherResearchAndDevelopmentExpense
/ us-gaap_BusinessAcquisitionAxis
= mdvn_CureTechLtdMember
/ us-gaap_ProductOrServiceAxis
= mdvn_MdvNineThousandThreeHundredMember
Manufacturing services and supply agreement period   3 years
Milestone payment 5,000,000mdvn_FutureMilestonePaymentForTechnologyTransferUnderManufacturingServicesAgreement
/ us-gaap_BusinessAcquisitionAxis
= mdvn_CureTechLtdMember
/ us-gaap_ProductOrServiceAxis
= mdvn_MdvNineThousandThreeHundredMember
 
Funding for clinical trial materials 19,300,000mdvn_MaximumFundingForClinicalTrialMaterials
/ us-gaap_BusinessAcquisitionAxis
= mdvn_CureTechLtdMember
/ us-gaap_ProductOrServiceAxis
= mdvn_MdvNineThousandThreeHundredMember
 
Clinical trial expense paid 3,500,000mdvn_ClinicalTrialMaterialsAmountPaid
/ us-gaap_BusinessAcquisitionAxis
= mdvn_CureTechLtdMember
/ us-gaap_ProductOrServiceAxis
= mdvn_MdvNineThousandThreeHundredMember
 
Funding period for clinical materials 3 years  
Collateralized letters of credit [Member]    
Commitments And Contingencies [Line Items]    
Outstanding letters of credit collateralized by restricted cash 13,300,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CollateralizedDebtObligationsMember
11,800,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CollateralizedDebtObligationsMember
Current asset [Member] | Collateralized letters of credit [Member]    
Commitments And Contingencies [Line Items]    
Outstanding letters of credit collateralized by restricted cash 900,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_BalanceSheetLocationAxis
= mdvn_CurrentAssetMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CollateralizedDebtObligationsMember
200,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_BalanceSheetLocationAxis
= mdvn_CurrentAssetMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CollateralizedDebtObligationsMember
Long-term assets [Member] | Collateralized letters of credit [Member]    
Commitments And Contingencies [Line Items]    
Outstanding letters of credit collateralized by restricted cash 12,400,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_BalanceSheetLocationAxis
= mdvn_LongTermAssetMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CollateralizedDebtObligationsMember
11,600,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_BalanceSheetLocationAxis
= mdvn_LongTermAssetMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CollateralizedDebtObligationsMember
Sixth Amendment To Lease Agreement [Member]    
Commitments And Contingencies [Line Items]    
Operating lease office space, in square feet 16,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= mdvn_SixthAmendmentToLeaseAgreementMember
 
Tenant improvement allowance 300,000us-gaap_PaymentsForProceedsFromTenantAllowance
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= mdvn_SixthAmendmentToLeaseAgreementMember
 
Outstanding letters of credit collateralized by restricted cash 1,600,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= mdvn_SixthAmendmentToLeaseAgreementMember
 
Minimum lease payments over the lease term 6,100,000mdvn_MinimumLeasePayments
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= mdvn_SixthAmendmentToLeaseAgreementMember
 
Development milestone payments [Member]    
Commitments And Contingencies [Line Items]    
Aggregate milestone payments upon achievement of certain development and regulatory milestone events 2,800,000mdvn_AggregateDevelopmentAndRegulatoryMilestonePaymentsToLicensor
/ us-gaap_TypeOfArrangementAxis
= mdvn_DevelopmentMilestonePaymentsMember
 
Percentage of sublicensing income 10.00%mdvn_PercentageOfSublicensingIncome
/ us-gaap_TypeOfArrangementAxis
= mdvn_DevelopmentMilestonePaymentsMember
 
Royalty percentage on sales 4.00%mdvn_RoyaltyPercentagePayableToLicensor
/ us-gaap_TypeOfArrangementAxis
= mdvn_DevelopmentMilestonePaymentsMember
 
Sales milestone payments [Member] | Astellas Pharma Inc. [Member]    
Commitments And Contingencies [Line Items]    
Percentage of sublicensing income 10.00%mdvn_PercentageOfSublicensingIncome
/ dei_LegalEntityAxis
= mdvn_AstellasPharmaIncMember
/ us-gaap_TypeOfArrangementAxis
= mdvn_SalesMilestonePaymentsMember
 
Milestone payments eligible to earn 320,000,000mdvn_MaximumEligibleMilestonePaymentsUnderCollaborationArrangement
/ dei_LegalEntityAxis
= mdvn_AstellasPharmaIncMember
/ us-gaap_TypeOfArrangementAxis
= mdvn_SalesMilestonePaymentsMember
 
Sales milestone payments under collaborative agreement 75,000,000mdvn_MilestonePaymentsEarnedToDateUnderCollaborationAgreement
/ dei_LegalEntityAxis
= mdvn_AstellasPharmaIncMember
/ us-gaap_TypeOfArrangementAxis
= mdvn_SalesMilestonePaymentsMember
 
Payment related to sales milestones $ 7,500,000mdvn_MilestoneRelatedPaymentsToLicensor
/ dei_LegalEntityAxis
= mdvn_AstellasPharmaIncMember
/ us-gaap_TypeOfArrangementAxis
= mdvn_SalesMilestonePaymentsMember