XML 55 R44.htm IDEA: XBRL DOCUMENT
v3.19.1

Fair value of financial instruments and marketable securities - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2019 | Dec. 31, 2017 | Jan. 31, 2019 | Dec. 31, 2018 | Aug. 23, 2018 | Aug. 31, 2015
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |  |
Transfers of assets between Level 1 and Level 2 of the fair value measurement hierarchy | $ 0 |  |  | $ 0 |  |
Realized gain (loss) | 0 | $ 0 |  |  |  |
Fair value of shares (in dollars per share) |  |  | $ 30.20 |  |  |
Estimated fair value of deferred consideration payable | 18,900,000 |  |  | 18,300,000 |  |
Deferred consideration payable | 19,300,000 |  |  | 19,400,000 |  |
3.00% Convertible senior notes due 2022 | Convertible debt |  |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |  |
Principal | 150,000,000 |  |  | 150,000,000 |  | $ 150,000,000.0
Interest rate ( as a percent ) |  |  |  |  |  | 3.00%
Fair value of convertible notes | $ 154,300,000 |  |  | 146,600,000 |  |
Agilis |  |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |  |
Development milestone payments which the entity is obligated to pay |  |  |  |  | $ 40,000,000 |
Agilis | Minimum |  |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |  |
Milestone, potential achievements, product sales | 2.00% |  |  |  |  |
Agilis | Maximum |  |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |  |
Milestone, potential achievements, product sales | 6.00% |  |  |  |  |
Development milestone payments which the entity is obligated to pay | $ 60,000,000 |  |  |  |  |
Milestone, potential achievements, priority review voucher amount | 535,000,000 |  |  |  |  |
Milestone, potential achievements, net sales amount | 150,000,000 |  |  |  |  |
Non-collaborative Arrangement Transactions | Agilis |  |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |  |
Development milestone payments which the entity is obligated to pay | 40,000,000 |  |  |  |  |
Recurring basis | Total |  |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |  |
Estimated fair value of deferred consideration payable | $ 38,200,000 |  |  | $ 37,700,000 |  |

X
- Definition Business Combination, Consideration, Liability, Deferred Consideration Payable + References No definition available. + Details
Name: | ptct_BusinessCombinationConsiderationLiabilityDeferredConsiderationPayable
Namespace Prefix: | ptct_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Combination, Consideration, Liability, Deferred Consideration Payable- Current + References No definition available. + Details
Name: | ptct_BusinessCombinationConsiderationLiabilityDeferredConsiderationPayableCurrent
Namespace Prefix: | ptct_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contingent Liability, Milestone, Potential Achievements, Net Sales Milestone + References No definition available. + Details
Name: | ptct_ContingentLiabilityMilestonePotentialAchievementsNetSalesMilestone
Namespace Prefix: | ptct_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contingent Liability, Milestone, Potential Achievements, Priority Review Voucher Amount + References No definition available. + Details
Name: | ptct_ContingentLiabilityMilestonePotentialAchievementsPriorityReviewVoucherAmount
Namespace Prefix: | ptct_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Contingent Liability, Milestone, Potential Achievements, Product Sales Percentage + References No definition available. + Details
Name: | ptct_ContingentLiabilityMilestonePotentialAchievementsProductSalesPercentage
Namespace Prefix: | ptct_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the development milestones payments which the entity is obligated to pay under certain contractual agreements. + References No definition available. + Details
Name: | ptct_DevelopmentMilestonePaymentObligations
Namespace Prefix: | ptct_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of transfers of assets measured on a recurring basis between Level 1 and Level 2 of the fair value hierarchy. + References No definition available. + Details
Name: | ptct_FairValueAssetsTransfersBetweenLevel1AndLevel2Amount
Namespace Prefix: | ptct_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ptct_ConvertibleSeniorNotes3.0PercentDue2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=ptct_AgilisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=us-gaap_NoncollaborativeArrangementTransactionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |