License, Collaboration and Other Significant Agreements - Janssen Pharmaceutica NV Research and License Agreement Narrative (Details) - Janssen Pharmaceutica NV - Development And Commercialize Research And License Agreement $ in Millions |
Feb. 09, 2017
USD ($)
shares
|
|---|---|
| Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] | |
| Upfront payment made in cash | $ | $ 1.0 |
| Warrant to purchase common stock (in shares) | shares | 509,611 |