Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

v3.20.1
Commitments and Contingencies (Details)
Mar. 01, 2019
USD ($)
Dec. 03, 2018
USD ($)
day
Apr. 19, 2018
USD ($)
Severance restricted stock units, weighted average price, number of trading days | day   20  
Minimum      
Exercise period of stock options     90 days
Maximum      
Exercise period of stock options     2 years
Mr. Mould      
Severance benefits   $ 900,000  
Severance benefits, period of consideration   2 years  
Cash severance payment   $ 100,000  
Restricted stock units awarded as part of severance   21 months  
Common shares, volume weighted-average price $ 33,333    
Dr. Stephen Clarke | Employment Agreement      
Severance benefits     $ 900,000
Severance benefits, period of consideration     2 years
Expense related to stock option awards     $ 15,000,000