Share Capital - Schedule of Common Stock (Details)	9 Months Ended
	Sep. 30, 2021 shares
Increase (Decrease) in Common Stock
Common shares outstanding, as at beginning of period (in shares)	366,981,556
Shares issued on option exercise (in shares)	56,898
Common shares outstanding, as at period end (in shares)	367,038,454
Shares of Common Stock
Increase (Decrease) in Common Stock
Common shares outstanding, as at beginning of period (in shares)	366,981,556
Shares issued on option exercise (in shares)	56,898
Common shares outstanding, as at period end (in shares)	367,038,454