Quarterly report pursuant to Section 13 or 15(d)

Share Capital - Additional Information (Detail)

v3.21.2
Share Capital - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Granted units 0   0    
Warrants fair value $ 0.3   $ 0.3   $ 0.2
Fair value adjustment of warrants $ (0.2) $ (0.1) $ 0.1 $ 4.9  
Stock Issued During Period, Shares, Issued for Services 75   75    
Payments of Stock Issuance Costs $ 0.2   $ 0.2    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount 3.5   $ 3.5    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     7 months 6 days    
Selling, general and administrative expenses          
Share-based payment arrangement expense $ 1.6 $ 1.7 $ 4.9 $ 9.4