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Collaborative and Other Agreements - Servier - Additional Information (Details) - Collaborative Arrangement [Member] - Servier [Member] € in Millions, $ in Millions | 3 Months Ended
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Mar. 31, 2016 USD ($) | Mar. 31, 2016 EUR (€) | Mar. 25, 2016 USD ($) | Mar. 31, 2015 USD ($)
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |  |  |
Future initial research and development expenses to be funded by counterparty | $ | $ 50.0 |  |  |
Contract and other revenue | $ | $ 0.3 |  |  | $ 0.5
Eligible milestone payments receivable |  | € 356.5 |  |
Eligible milestone payments receivable under specific rights not met |  | 633.8 |  |
Eligible milestone payments receivable, after amendment |  | 341.5 |  |
Eligible milestone payments receivable under specific rights not met, after amendment |  | € 618.8 |  |
Deferred revenue recognized | $ |  |  | $ 0.6 |

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- Definition Amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A + Details
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- Definition Represents eligible milestone payments receivable after amendments, if the company re-acquired cardiovascular and/or diabetes rights for use in the United States. + References No definition available. + Details
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