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License and Collaboration Agreements (Tables) | 6 Months Ended
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Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
License, Collaboration and Other Revenue | In accordance with our collaboration agreements, we recognized license, collaboration and other revenue as follows (in thousands):
|  |  |  | Three months ended June 30, |  | Six months ended June 30,
Partner |  | Drug or Drug Candidate |  | 2019 |  | 2018 |  | 2019 |  | 2018
Bristol-Myers Squibb |  | NKTR-214 |  | — |  |  | 1,059,768 |  |  | — |  |  | 1,059,768 |
Eli Lilly and Company |  | NKTR-358 |  | 1,200 |  |  | 3,052 |  |  | 3,700 |  |  | 5,406 |
Baxalta Incorporated/Takeda |  | ADYNOVATE® |  | 58 |  |  | 18 |  |  | 78 |  |  | 10,028 |
Amgen, Inc. |  | Neulasta® |  | 1,250 |  |  | 1,250 |  |  | 2,500 |  |  | 2,500 |
Other |  |  |  | 27 |  |  | 158 |  |  | 461 |  |  | 271 |
License, collaboration and other revenue |  |  |  | $ | 2,535 |  |  | $ | 1,064,246 |  |  | 6,739 |  |  | $ | 1,077,973 |
Changes in Deferred Revenue Balance from Collaboration Agreements | The following table presents the changes in our deferred revenue balance from our collaboration agreements during the six months ended June 30, 2019 (in thousands):
| Six months ended June 30, 2019
Deferred revenue—December 31, 2018 | $ | 24,636 |
Recognition of previously unearned revenue | (6,715 | )
Deferred revenue—June 30, 2019 | $ | 17,921 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of contractual arrangements that involve two or more parties that both: (i) actively participate in a joint operating activity and (ii) are exposed to significant risks and rewards that depend on the commercial success of the joint operating activity. Additionally, the element may include all other transactions of the entity categorized collectively, if such comparison of collaborative arrangements as a component of all transactions of the entity is desired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 808 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434 + Details
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