XML 42 R33.htm IDEA: XBRL DOCUMENT
v3.22.1

Liabilities Related to Sales of Future Royalties - Activity Within the Liability Account (Details) - USD ($) $ in Thousands | 3 Months Ended | 123 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2022 | Dec. 31, 2021
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |  |  |
Royalty monetization proceeds |  |  | $ 274,000 |
Non-cash royalty revenue | $ 17,561 | $ 18,798 | (351,012) |
Non-cash interest expense | 7,529 | $ 13,296 | 251,802 |
Payments to RPI |  |  | (10,000) |
Loss on revaluation of liability related to the sale of future royalties |  |  | 23,522 |
Liabilities related to the sales of future royalties – ending balance | 188,312 |  | 188,312 |
Less: unamortized transaction costs | (2,708) |  | (2,708) |
Liabilities related to the sales of future royalties, net | 185,604 |  | 185,604 | $ 195,427
2012 Purchase and Sale Agreement |  |  |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |  |  |
Royalty monetization proceeds |  |  | 124,000 |
Non-cash royalty revenue |  |  | (289,655) |
Non-cash interest expense |  |  | 226,506 |
Payments to RPI |  |  | (10,000) |
Loss on revaluation of liability related to the sale of future royalties |  |  | 23,522 |
Liabilities related to the sales of future royalties – ending balance | 74,373 |  | 74,373 |
Less: unamortized transaction costs | 0 |  | 0 |
Liabilities related to the sales of future royalties, net | 74,373 |  | 74,373 |
2020 Purchase and Sale Agreement |  |  |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |  |  |
Royalty monetization proceeds |  |  | 150,000 |
Non-cash royalty revenue |  |  | (61,357) |
Non-cash interest expense |  |  | 25,296 |
Payments to RPI |  |  | 0 |
Loss on revaluation of liability related to the sale of future royalties |  |  | 0 |
Liabilities related to the sales of future royalties – ending balance | 113,939 |  | 113,939 |
Less: unamortized transaction costs | (2,708) |  | (2,708) |
Liabilities related to the sales of future royalties, net | $ 111,231 |  | $ 111,231 |

X
- Definition Gain (Loss) ON Revaluation Of Liabilities Related To The Sale Of Future Royalties, Gross + References No definition available. + Details
Name: | nktr_GainLossONRevaluationOfLiabilitiesRelatedToTheSaleOfFutureRoyaltiesGross
Namespace Prefix: | nktr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Liabilities On Sale Of Future Royalties Unamortized Transaction Costs + References No definition available. + Details
Name: | nktr_LiabilitiesOnSaleOfFutureRoyaltiesUnamortizedTransactionCosts
Namespace Prefix: | nktr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Liability Related To Sale Of Potential Future Royalties Non Current + References No definition available. + Details
Name: | nktr_LiabilityRelatedToSaleOfPotentialFutureRoyaltiesNonCurrent
Namespace Prefix: | nktr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Liability related to sale of potential future royalties non current net of issuance costs. + References No definition available. + Details
Name: | nktr_LiabilityRelatedToSaleOfPotentialFutureRoyaltiesNonCurrentNetOfIssuanceCosts
Namespace Prefix: | nktr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Non-cash interest expense related to sale of royalties. + References No definition available. + Details
Name: | nktr_NonCashInterestExpenseRelatedToSaleOfRoyalties
Namespace Prefix: | nktr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Non cash royalty revenue related to sale future royalties. + References No definition available. + Details
Name: | nktr_NonCashRoyaltyRevenueRelatedToSaleOfFutureRoyalties
Namespace Prefix: | nktr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Partial Repayment Of Royalty Sale Proceeds + References No definition available. + Details
Name: | nktr_PartialRepaymentOfRoyaltySaleProceeds
Namespace Prefix: | nktr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Royalty Monetization Proceeds + References No definition available. + Details
Name: | nktr_RoyaltyMonetizationProceeds
Namespace Prefix: | nktr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=nktr_PurchaseAndSaleAgreement2012Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=nktr_PurchaseAndSaleAgreement2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |