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Collaboration Agreements (Tables) | 9 Months Ended
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Sep. 27, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Collaborative Revenues Under Collaboration Agreement | Collaboration revenues under the collaboration agreement with Takeda were as follows (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Takeda collaboration revenues | $ | 1,187 |  |  | $ | 1,940 |  |  | $ | 14,245 |  |  | $ | 6,843 |
Collaboration revenues under the collaboration agreement with Ipsen were as follows (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Ipsen collaboration revenues | $ | 76,016 |  |  | $ | 57,186 |  |  | $ | 120,133 |  |  | $ | 145,038 |
Profits on U.S. commercialization and Royalty revenues on ex-U.S. sales were as follows (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Profits on U.S. commercialization | $ | 1,102 |  |  | $ | 1,935 |  |  | $ | 3,507 |  |  | $ | 6,004 |
Royalty revenues on ex-U.S. sales | $ | 1,614 |  |  | $ | 1,390 |  |  | $ | 4,426 |  |  | $ | 4,285 |
Collaboration revenues under the collaboration agreement with Daiichi Sankyo were as follows (in thousands):
| Nine Months Ended September 30,
| 2019 |  | 2018
Daiichi Sankyo collaboration revenues | $ | 20,130 |  |  | $ | 20,000 |
Such royalties accruing to GSK were as follows (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Royalties accruing to GSK | $ | 7,964 |  |  | $ | 6,268 |  |  | $ | 23,079 |  |  | $ | 17,021 |

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- Definition Tabular disclosure of collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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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