Quarterly report pursuant to Section 13 or 15(d)

Collaboration and License Agreements - Additional Information (Detail)

v3.5.0.2
Collaboration and License Agreements - Additional Information (Detail)
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 1998
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Agreement
Jun. 30, 2015
USD ($)
DiaTex, Inc. [Member]          
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]          
License agreement date       Jun. 30, 1998  
Monthly license fees $ 2,000        
Potential future development payments $ 800,000        
Development payment   $ 0 $ 0 $ 0 $ 0
Royalty payment   $ 0 $ 0 $ 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]          
License agreement date       Jun. 30, 2010  
Number of development and license agreements | Agreement       2