XML 29 R18.htm IDEA: XBRL DOCUMENT
v3.23.1

License and Collaboration Agreements (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2023
License And Collaboration Agreements [Abstract] |
Schedule of Derivative Liabilities at Fair Value | The following table presents the change in the derivative liability for the three months ended March 31, 2022:
|  | Fair Value Hierarchy Level |  | Three Months Ended March 31, 2022
Fair value at beginning of period |  | 3 |  | $ | 27,726 |
Non-cash research and development expense |  |  |  | 4,951 |
Cash receipts from SFJ |  |  |  | 750 |
Change in the fair value of development derivative liability |  |  |  | (33,427) |
Fair value at end of period |  | 3 |  | $ | — |

X
- Definition License and collaboration agreements. + References No definition available. + Details
Name: | nktr_LicenseAndCollaborationAgreementsAbstract
Namespace Prefix: | nktr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of derivative liabilities at fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration