Quarterly report pursuant to Section 13 or 15(d)

License Agreements - Additional Information (Detail)

v3.10.0.1
License Agreements - Additional Information (Detail)
1 Months Ended 24 Months Ended 114 Months Ended
Jan. 22, 2018
USD ($)
May 14, 2015
Jul. 31, 2016
USD ($)
Jun. 30, 2018
USD ($)
g
Jun. 30, 2018
USD ($)
Sopharma [Member]          
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]          
Payments under license agreement         $ 10
License agreement expiry date   May 26, 2029      
University of Bristol [Member]          
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]          
Payments under license agreement       $ 50,000  
Maximum amount payable under license agreement, tied to milestones     $ 3,200,000    
License agreement expiry     2036-07    
Volume of cytisine provided as an initial contribution | g       100  
University of Bristol [Member] | Amendment to the University of Bristol License Agreement [Member]          
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]          
Payments under license agreement $ 37,500        
Maximum amount payable under license agreement, tied to milestones $ 1,700,000        
University of Bristol [Member] | Minimum [Member] | License Agreement [Member]          
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]          
Patent expiry date     Feb. 05, 2036