Annual report pursuant to Section 13 and 15(d)

Earnings Per Share - Additional Information (Detail) - 4.50 % Convertible Senior Notes

v3.20.4
Earnings Per Share - Additional Information (Detail) - 4.50 % Convertible Senior Notes
Dec. 31, 2020
$ / shares
shares
Earnings Per Share [Abstract]  
Interest rate 4.50%
Warrants, per share | $ / shares $ 22.08
Common shares issued | shares 32,051,282