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v2.4.1.9

Collaborations and grants (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2014 | Nov. 30, 2014 | Jan. 31, 2014 | Nov. 30, 2011 item | Dec. 31, 2013 | Dec. 31, 2012 | Jan. 02, 2011 item
Minimum |  |  |  |  |  |  |
Grant revenue |  |  |  |  |  |  |
Term of grant program | 2 years |  |  |  |  |  |
Maximum |  |  |  |  |  |  |
Grant revenue |  |  |  |  |  |  |
Term of grant program | 5 years |  |  |  |  |  |
Collaboration agreement | Development event milestones |  |  |  |  |  |  |
Collaborations and grants |  |  |  |  |  |  |
Collaboration revenue recognized |  | $ 10.0 us-gaap_LicenseAndServicesRevenue / ptct_MilestoneAxis = ptct_ResearchAndDevelopmentEventMilestonesMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember | $ 7.5 us-gaap_LicenseAndServicesRevenue / ptct_MilestoneAxis = ptct_ResearchAndDevelopmentEventMilestonesMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember |  |  |  |
Collaboration agreement | Roche and SMA Foundation |  |  |  |  |  |  |
Collaborations and grants |  |  |  |  |  |  |
Deferred revenue |  |  |  | 30.0 us-gaap_DeferredRevenue / us-gaap_CounterpartyNameAxis = ptct_RocheAndSMAFoundationMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember |  |  |
Collaboration revenue recognized | 20.2 us-gaap_LicenseAndServicesRevenue / us-gaap_CounterpartyNameAxis = ptct_RocheAndSMAFoundationMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember |  |  |  | 26.6 us-gaap_LicenseAndServicesRevenue / us-gaap_CounterpartyNameAxis = ptct_RocheAndSMAFoundationMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember | 18.4 us-gaap_LicenseAndServicesRevenue / us-gaap_CounterpartyNameAxis = ptct_RocheAndSMAFoundationMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember |
Number of compounds in preclinical development |  |  |  | 3 ptct_CollaborativeArrangementsNumberOfCompoundsInPreclinicalDevelopment / us-gaap_CounterpartyNameAxis = ptct_RocheAndSMAFoundationMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember |  |  |
Number of significant deliverables |  |  |  | 2 ptct_CollaborativeArrangementsNumberOfSignificantDeliverables / us-gaap_CounterpartyNameAxis = ptct_RocheAndSMAFoundationMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember |  |  |
Research period for applying technology |  |  |  | 2 years |  |  |
Collaboration agreement | Roche and SMA Foundation | Development event milestones | Maximum |  |  |  |  |  |  |
Collaborations and grants |  |  |  |  |  |  |
Additional consideration receivable upon achievement of specified events | 135.0 ptct_CollaborationAgreementContingentConsiderationReceivable / us-gaap_CounterpartyNameAxis = ptct_RocheAndSMAFoundationMember / ptct_MilestoneAxis = ptct_ResearchAndDevelopmentEventMilestonesMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember |  |  |  |  |  |
Collaboration agreement | Roche and SMA Foundation | Sales milestones | Maximum |  |  |  |  |  |  |
Collaborations and grants |  |  |  |  |  |  |
Additional consideration receivable upon achievement of specified events | 325.0 ptct_CollaborationAgreementContingentConsiderationReceivable / us-gaap_CounterpartyNameAxis = ptct_RocheAndSMAFoundationMember / ptct_MilestoneAxis = ptct_SalesMilestonesMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_TypeOfArrangementAxis = us-gaap_CollaborativeArrangementMember |  |  |  |  |  |
Early stage collaboration and discovery agreements |  |  |  |  |  |  |
Collaborations and grants |  |  |  |  |  |  |
Deferred revenue | 1.8 us-gaap_DeferredRevenue / us-gaap_TypeOfArrangementAxis = ptct_CollaborationAndDiscoveryAgreementsMember |  |  |  | 0.9 us-gaap_DeferredRevenue / us-gaap_TypeOfArrangementAxis = ptct_CollaborationAndDiscoveryAgreementsMember |  |
Collaboration revenue recognized | 1.3 us-gaap_LicenseAndServicesRevenue / us-gaap_TypeOfArrangementAxis = ptct_CollaborationAndDiscoveryAgreementsMember |  |  |  | 4.8 us-gaap_LicenseAndServicesRevenue / us-gaap_TypeOfArrangementAxis = ptct_CollaborationAndDiscoveryAgreementsMember |  |
Number of significant deliverables |  |  |  |  |  |  | 2 ptct_CollaborativeArrangementsNumberOfSignificantDeliverables / us-gaap_TypeOfArrangementAxis = ptct_CollaborationAndDiscoveryAgreementsMember
Early stage collaboration and discovery agreements | Minimum |  |  |  |  |  |  |
Collaborations and grants |  |  |  |  |  |  |
Research period for applying technology | 3 years |  |  |  |  |  |
Early stage collaboration and discovery agreements | Maximum |  |  |  |  |  |  |
Collaborations and grants |  |  |  |  |  |  |
Research period for applying technology | 4 years |  |  |  |  |  |
Early stage collaboration and discovery agreements | Development event milestones |  |  |  |  |  |  |
Collaborations and grants |  |  |  |  |  |  |
Additional consideration receivable upon achievement of specified events | 143.0 ptct_CollaborationAgreementContingentConsiderationReceivable / ptct_MilestoneAxis = ptct_ResearchAndDevelopmentEventMilestonesMember / us-gaap_TypeOfArrangementAxis = ptct_CollaborationAndDiscoveryAgreementsMember |  |  |  |  |  |
Early stage collaboration and discovery agreements | Sales milestones | Maximum |  |  |  |  |  |  |
Collaborations and grants |  |  |  |  |  |  |
Additional consideration receivable upon achievement of specified events | 252.0 ptct_CollaborationAgreementContingentConsiderationReceivable / ptct_MilestoneAxis = ptct_SalesMilestonesMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_TypeOfArrangementAxis = ptct_CollaborationAndDiscoveryAgreementsMember |  |  |  |  |  |

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