XML 41 R29.htm IDEA: XBRL DOCUMENT
v3.21.1

Debt - (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
Debt Instrument, Redemption [Line Items] |
Summary of liability for sale of future royalties | ​
​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended March 31, | ​
Liability for sale of future royalties- (current and noncurrent) | ​ | 2021 | ​
Beginning balance as of December 31, 2020 | ​ | $ | 679,762 | ​
Less: Non-cash royalty revenue payable to RPI | ​ | ​ | (2,858) | ​
Plus: Non-cash interest expense recognized | ​ | ​ | 18,080 | ​
Ending balance | ​ | $ | 694,984 | ​
Effective interest rate as of March 31, 2021 | ​ |  | 10.6 | %
1.50% Convertible senior notes due 2026 |
Debt Instrument, Redemption [Line Items] |
Summary of convertible notes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Liability component |  | March 31, 2021 | ​ | December 31, 2020
Principal | ​ | $ | 287,500 | ​ | $ | 287,500
Less: Debt issuance costs | ​ |  | (6,457) | ​ |  | (4,058)
Less: Debt discount, net(1) | ​ |  | — | ​ |  | (106,065)
Net carrying amount | ​ | $ | 281,043 | ​ | $ | 177,377
Summary of interest expense recognized related to the Convertible Notes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, | ​
​ |  | 2021 |  | ​ | 2020 | ​
Contractual interest expense | ​ | $ | 1,069 | ​ | $ | 1,076 | ​
Amortization of debt issuance costs | ​ |  | 277 | ​ | ​ | 124 | ​
Amortization of debt discount | ​ | ​ | — | ​ | ​ | 3,234 | ​
Total | ​ | $ | 1,346 | ​ | $ | 4,434 | ​
Effective interest rate of the liability component | ​ |  | 1.9 | % | ​ | 10.2 | %
3.00% Convertible senior notes due 2022 |
Debt Instrument, Redemption [Line Items] |
Summary of convertible notes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Liability component |  | March 31, 2021 |  | December 31, 2020
Principal | ​ | $ | 150,000 | ​ | $ | 150,000
Less: Debt issuance costs | ​ |  | (1,005) | ​ |  | (865)
Less: Debt discount, net (1) | ​ |  | — | ​ |  | (17,372)
Net carrying amount | ​ | $ | 148,995 | ​ | $ | 131,763
Summary of interest expense recognized related to the Convertible Notes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ |
​ | ​ | Three Months Ended March 31, |
​ |  | 2021 |  | 2020 |
Contractual interest expense | ​ | $ | 1,110 | ​ | $ | 1,119 | ​
Amortization of debt issuance costs | ​ |  | 175 | ​ |  | 111 | ​
Amortization of debt discount | ​ |  | — | ​ |  | 2,225 | ​
Total | ​ | $ | 1,285 | ​ | $ | 3,455 | ​
Effective interest rate of the liability component | ​ |  | 3.5 | % |  | 11.0 | %

X
- Definition Tabular disclosure of activity related to the liability resulting from the sale of future royalties. + References No definition available. + Details
Name: | ptct_LiabilityForSaleOfFutureRoyaltiesTableTextBlock
Namespace Prefix: | ptct_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of interest expense recognized related to convertible debt. + References No definition available. + Details
Name: | ptct_ScheduleOfInterestExpenseRecognizedRelatedToConvertibleDebtTableTextBlock
Namespace Prefix: | ptct_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components. + References No definition available. + Details
Name: | us-gaap_ConvertibleDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
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_DebtInstrumentRedemptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ptct_ConvertibleSeniorNotes1.5DueSeptember152026Member
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: |