XML 47 R35.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Debt (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Debt Disclosure [Abstract] |
Summary of convertible notes | The following table sets forth total interest expense recognized related to the 2026 Convertible Notes:
|  | Year ended December 31,
|  | 2019
Contractual interest expense |  | $ | 1,220 |
Amortization of debt issuance costs |  | 140 |
Amortization of debt discount |  | $ | 3,659 |
Total |  | $ | 5,019 |
Effective interest rate of the liability component |  | 10.2 | %
he 2026 Convertible Notes consist of the following:
Liability component |  | December 31, 2019
Principal |  | $ | 287,500 |
Less: Debt issuance costs |  | (4,567 | )
Less: Debt discount, net(1) |  | (119,350 | )
Net carrying amount |  | $ | 163,583 |
(1) Included in the consolidated balance sheets within convertible senior notes (due 2026) and amortized to interest expense over the remaining life of the 2026 Convertible Notes using the effective interest rate method. The 2022 Convertible Notes consist of the following:
|  | Year ended December 31,
Liability component |  | 2019 |  | 2018
Principal |  | $ | 150,000 |  |  | $ | 150,000 |
Less: Debt issuance costs |  | (1,329 | ) |  | (1,746 | )
Less: Debt discount, net (1) |  | (26,686 | ) |  | (35,054 | )
Net carrying amount |  | $ | 121,985 |  |  | $ | 113,200 |
(1) Included in the consolidated balance sheets within convertible senior notes (due 2022) and amortized to interest expense over the remaining life of the 2022 Convertible Notes using the effective interest rate method.
Summary of interest expense recognized related to the Convertible Notes | The following table sets forth total interest expense recognized related to the 2022 Convertible Notes:
|  | Year ended December 31,
|  | 2019 |  | 2018
Contractual interest expense |  | $ | 4,500 |  |  | $ | 4,500 |
Amortization of debt issuance costs |  | 417 |  |  | 375 |
Amortization of debt discount |  | 8,368 |  |  | 7,518 |
Total |  | $ | 13,285 |  |  | $ | 12,393 |
Effective interest rate of the liability component |  | 11.0 | % |  | 11.0 | %

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
- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration