XML 35 R26.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Liabilities Related to the Sales of Future Royalties (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Liability Related To Sale Of Potential Future Royalties [Abstract] |
Schedule of Liability Related to Potential Future Royalties | The following table shows the activity within the liability account of each arrangement (in thousands):
|  | Year-Ended December 31, 2023 |  |  | Period from inception to December 31, 2023 |
|  | 2012 Purchase and Sale Agreement |  |  | 2020 Purchase and Sale Agreement |  |  | Total |  |  | 2012 Purchase and Sale Agreement |  |  | 2020 Purchase and Sale Agreement |  |  | Total |
Liabilities related to the sales of future royalties—beginning balance |  | $ | 55,167 |  |  | $ | 102,294 |  |  | $ | 157,461 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Royalty monetization proceeds |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 124,000 |  |  |  | 150,000 |  |  |  | 274,000 |
Non-cash royalty revenue |  |  | (37,323 | ) |  |  | (31,598 | ) |  |  | (68,921 | ) |  |  | (353,847 | ) |  |  | (118,319 | ) |  |  | (472,166 | )
Non-cash interest expense |  |  | 6,373 |  |  |  | 18,961 |  |  |  | 25,334 |  |  |  | 240,542 |  |  |  | 57,976 |  |  |  | 298,518 |
Payments to RPI |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (10,000 | ) |  |  | — |  |  |  | (10,000 | )
Loss on revaluation of liability related to the sale of future royalties |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 23,522 |  |  |  | — |  |  |  | 23,522 |
Liabilities related to the sales of future royalties – ending balance |  |  | 24,217 |  |  |  | 89,657 |  |  |  | 113,874 |  |  |  | 24,217 |  |  |  | 89,657 |  |  |  | 113,874 |
Less: unamortized transaction costs |  |  | — |  |  |  | (1,249 | ) |  |  | (1,249 | ) |  |  | — |  |  |  | (1,249 | ) |  |  | (1,249 | )
Liabilities related to the sales of future royalties, net |  | $ | 24,217 |  |  | $ | 88,408 |  |  | $ | 112,625 |  |  | $ | 24,217 |  |  | $ | 88,408 |  |  | $ | 112,625 |

X
- Definition Liability related to sale of potential future royalties. + References No definition available. + Details
Name: | nktr_LiabilityRelatedToSaleOfPotentialFutureRoyaltiesAbstract
Namespace Prefix: | nktr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Liability Related To Sale Of Potential Future Royalties + References No definition available. + Details
Name: | nktr_ScheduleOfLiabilityRelatedToSaleOfPotentialFutureRoyaltiesTableTextBlock
Namespace Prefix: | nktr_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration