Quarterly report pursuant to Section 13 or 15(d)

(Loss) earnings per share - Narrative (Details)

v3.20.2
(Loss) earnings per share - Narrative (Details) - shares
shares in Millions
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive securities excluded from the calculation of diluted earnings per share 1.4 1.0
Warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive securities excluded from the calculation of diluted earnings per share 1.4 1.0
Restricted Share Units    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive securities excluded from the calculation of diluted earnings per share 1.4 1.0