XML 56 R41.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Fair value of financial instruments and marketable securities - Narrative (Details) | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2018 USD ($) $ / shares | Dec. 31, 2017 USD ($) $ / shares | Aug. 23, 2018 USD ($) | Apr. 08, 2018 $ / shares | Aug. 31, 2015 USD ($)
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) | $ / shares |  |  |  | $ 27.04 |
Development milestone payments which the entity is obligated to pay | 4,500,000 |  |  |  |
Estimated fair value of deferred consideration payable | $ 38,200,000 | $ 0 |  |  |
Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Fair value of shares (in dollars per share) | $ / shares | $ 47 | $ 16.68 |  |  |
Minimum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, exercise price (in dollars per share) | $ / shares |  | 128.00 |  |  |
Minimum | Commitments |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Milestone, potential achievements, product sales | 25.00% |  |  |  |
Maximum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, exercise price (in dollars per share) | $ / shares |  | 2,520.00 |  |  |
Maximum | Commitments |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Milestone, potential achievements, product sales | 89.00% |  |  |  |
SARs |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Fair value of shares (in dollars per share) | $ / shares | $ 47 | $ 16.68 |  |  |
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 |  |  |  |  | 3.00%
Fair value of convertible notes | $ 172,900,000 | $ 115,700,000 |  |  |
Measurement Input, Price Volatility | Minimum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Derivative liability, measurement input | 0.51 | 0.69 |  |  |
Measurement Input, Price Volatility | Maximum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Derivative liability, measurement input | 0.54 | 0.69 |  |  |
Measurement Input, Price Volatility | SARs | Minimum |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Derivative liability, measurement input | 0.45 | 0.31 |  |  |
Measurement Input, Price Volatility | SARs | Maximum |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Derivative liability, measurement input | 0.54 | 0.70 |  |  |
Measurement Input, Risk Free Interest Rate | Minimum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Derivative liability, measurement input | 0.0259 | 0.0189 |  |  |
Measurement Input, Risk Free Interest Rate | Maximum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Derivative liability, measurement input | 0.0259 | 0.0189 |  |  |
Measurement Input, Risk Free Interest Rate | SARs | Minimum |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Derivative liability, measurement input | 0.0219 | 0.0128 |  |  |
Measurement Input, Risk Free Interest Rate | SARs | Maximum |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Derivative liability, measurement input | 0.0270 | 0.0189 |  |  |
Measurement Input, Strike Price | Minimum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, exercise price (in dollars per share) | $ / shares | 128.00 |  |  |  |
Measurement Input, Strike Price | Maximum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, exercise price (in dollars per share) | $ / shares | 2,520.00 |  |  |  |
Measurement Input, Strike Price | SARs | Minimum |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, exercise price (in dollars per share) | $ / shares | 6.76 | 6.76 |  |  |
Measurement Input, Strike Price | SARs | Maximum |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, exercise price (in dollars per share) | $ / shares | 30.86 | 30.86 |  |  |
Measurement Input, Expected Term | Minimum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, term | 10 months 2 days | 1 year 7 months 6 days |  |  |
Measurement Input, Expected Term | Maximum | Warrants |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, term | 11 months 23 days | 1 year 8 months 12 days |  |  |
Measurement Input, Expected Term | SARs | Minimum |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, term | 3 months 4 days | 0 days |  |  |
Measurement Input, Expected Term | SARs | Maximum |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Warrants, term | 1 year 3 months 4 days | 2 years |  |  |
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 |  | $ 40,000,000 |  |
Estimated fair value of deferred consideration payable |  |  | 38,200,000 |  |
Agilis | Commitments |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Development milestone, potential achievements | $ 20,000,000 |  |  |  |
Agilis | Minimum |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Milestone, potential achievements, product sales | 2.00% |  |  |  |
Agilis | Minimum | Commitments |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Milestone, potential achievements, product sales | 2.00% |  |  |  |
Development milestone, potential achievements | $ 0 |  |  |  |
Milestone, potential achievements, priority review voucher amount | 0 |  |  |  |
Milestone, potential achievements, net sales amount | $ 0 |  |  |  |
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 |  |  |  |
Agilis | Maximum | Commitments |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Milestone, potential achievements, product sales | 6.00% |  |  |  |
Development milestone, potential achievements | $ 20,000,000 |  |  |  |
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 |  | $ 40,000,000 |  |
Non-collaborative Arrangement Transactions | Agilis | Commitments |  |  |  |  |
Financial assets and liabilities measured at fair value on recurring basis |  |  |  |  |
Development milestone payments which the entity is obligated to pay | $ 40,000,000 |  |  |  |

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 Contingent Liability, Milestone, Potential Achievements + References No definition available. + Details
Name: | ptct_ContingentLiabilityMilestonePotentialAchievements
Namespace Prefix: | ptct_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Contingent Liability, Milestone, Potential Achievements, Net Sales Amount + References No definition available. + Details
Name: | ptct_ContingentLiabilityMilestonePotentialAchievementsNetSalesAmount
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 Value of input used to measure derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
Name: | us-gaap_DerivativeLiabilityMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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
- Definition Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
Name: | us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
Name: | us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=us-gaap_WarrantMember
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: | us-gaap_FairValueByLiabilityClassAxis=us-gaap_CommitmentsMember
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_AwardTypeAxis=us-gaap_StockAppreciationRightsSARSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=ptct_MeasurementInputStrikePriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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