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License and Collaboration Agreements - License, Collaboration and Other Revenue (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
License And Collaboration Agreements [Line Items] |  |  |
License, collaboration and other revenue | $ 60,382 | $ 165,604 | $ 153,289
AstraZeneca AB [Member] | MOVANTIK and MOVANTIK fixed-dose combination program [Member] |  |  |
License And Collaboration Agreements [Line Items] |  |  |
License, collaboration and other revenue | 33,000 | 130,000 | 105,001
Roche [Member] | PEGASYS and MIRCERA [Member] |  |  |
License And Collaboration Agreements [Line Items] |  |  |
License, collaboration and other revenue | 7,685 | 12,816 | 12,845
Amgen, Inc. [Member] | Neulasta [Member] |  |  |
License And Collaboration Agreements [Line Items] |  |  |
License, collaboration and other revenue | 5,000 | 5,000 | 5,000
Daiichi Sankyo Europe GmbH [Member] | ONZEALDTM (NKTR-102) [Member] |  |  |
License And Collaboration Agreements [Line Items] |  |  |
License, collaboration and other revenue | 3,690 | 0 | 0
Bayer Healthcare LLC [Member] | BAY41-6551 (Amikacin Inhale) [Member] |  |  |
License And Collaboration Agreements [Line Items] |  |  |
License, collaboration and other revenue | 1,429 | 1,919 | 4,717
Baxalta Incorporated [Member] | ADYNOVATE [Member] |  |  |
License And Collaboration Agreements [Line Items] |  |  |
License, collaboration and other revenue | 650 | 10,694 | 10,258
Other [Member] |  |  |
License And Collaboration Agreements [Line Items] |  |  |
License, collaboration and other revenue | $ 8,928 | $ 5,175 | $ 15,468

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- Definition Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Revenue may contain one or more of the following elements: upfront fees, contract research, milestone payments, manufacturing and supply, royalties, and license fees. + References No definition available. + Details
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