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Collaboration Agreements (Tables) | 3 Months Ended
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Mar. 29, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Collaborative Revenues Under Collaboration Agreement | Profits on U.S. commercialization and Royalty revenues on ex-U.S. sales were as follows (in thousands):
| Three Months Ended March 31,
| 2019 |  | 2018
Profits on U.S. commercialization | $ | 1,055 |  |  | $ | 1,373 |
Royalty revenues on ex-U.S. sales | $ | 1,490 |  |  | $ | 1,349 |
Collaboration revenues under the collaboration agreement with Ipsen were as follows (in thousands):
| Three Months Ended March 31,
| 2019 |  | 2018
Ipsen collaboration revenues | $ | 21,868 |  |  | $ | 53,809 |
Collaboration revenues under the collaboration agreement with Takeda were as follows (in thousands):
| Three Months Ended March 31,
| 2019 |  | 2018
Takeda collaboration revenues | $ | 11,493 |  |  | $ | 2,917 |

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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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