Collaborations and Licensing Arrangements - Additional Information (Detail 1) - USD ($) $ in Millions |
May 31, 2018 |
Dec. 31, 2016 |
---|---|---|
Collaboration and License Agreement | Receptor | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2017-01-01 | ||
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] | ||
Deferred revenue - nonrefundable license fee | $ 1.0 | |
Deferred revenue recognition period | 4 years | |
License and Distribution Agreement | Cipla Ltd | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2018-06-01 | ||
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] | ||
Deferred revenue - nonrefundable license fee | $ 2.2 | |
Deferred revenue recognition period | 15 years |