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 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Granted units 0   0    
Warrants fair value $ 0.1   $ 0.1   $ 0.2
Fair value adjustment of warrants (0.1) $ (0.1) 0.1 $ 4.8  
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 5.2   $ 5.2    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     9 months 18 days    
Selling, general and administrative expenses          
Share-based payment arrangement expense $ 1.6 $ 2.5 $ 3.3 $ 7.7