Quarterly report pursuant to Section 13 or 15(d)

Collaboration and License Agreements - Additional Information (Detail)

v3.20.1
Collaboration and License Agreements - Additional Information (Detail)
3 Months Ended
Mar. 31, 2020
USD ($)
Agreement
Mar. 31, 2019
USD ($)
Janssen Pharmaceutical NV [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Accrued royalties $ 0 $ 0
Janssen Pharmaceutical NV [Member] | Maximum [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Percentage of royalty on net sales 8.00%  
Janssen Pharmaceuticals, Inc. [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Number of development and license agreements | Agreement 2  
DiaTex, Inc. [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Royalty payment $ 0 0
Development payment $ 0 $ 0