Revenue - Other Collaborations (Details) - USD ($) |
12 Months Ended | |
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Dec. 31, 2017 |
Dec. 31, 2016 |
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| Deferred Revenue Arrangement [Line Items] | ||
| Milestone payments | $ 12,573,000 | $ 1,655,000 |
| Other | Strategic Partnerships and Other License Agreements | ||
| Deferred Revenue Arrangement [Line Items] | ||
| Milestone payments | $ 0 | |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The amount of consideration recognized during the period for the milestone or milestones. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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