Research and Development Agreements - Schedule of Contract Assets and Contract Liabilities for Performance Obligations related to Collaboration Agreements (Parenthetical) (Detail) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Contract With Customer Asset And Liability [Line Items] | ||
| Research and development revenue | $ 231,000 | $ 1,760,000 |
| Deferred Revenue | ||
| Contract With Customer Asset And Liability [Line Items] | ||
| Research and development revenue | $ 163,000 | |
| X | ||||||||||
- Definition Contract with customer asset and liability. No definition available.
|
| X | ||||||||||
- Definition Research and development revenues from collaboration agreements. No definition available.
|
| X | ||||||||||
- Details
|