Share Capital - Stock Option Activity (Details) - shares		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of Options Outstanding, Beginning balance		5,638,232	4,758,997
Number of Options, Granted		1,659,845	1,111,950
Number of Options, Exercised	[1]	(219,107)	(122,403)
Number of Options, Forfeited, cancelled or expired		(3,897)	(5,936)
Number of Options Outstanding, Ending balance		7,075,073	5,742,608
Number of Options Exercisable, End of period		3,231,657	2,769,438

[1] During the three months ended March 31, 2022, no stock options were exercised for cash (2021 – 46,296). In the same period, the Company issued 149,311 (2021 – 36,159) common shares for the cashless exercise of 219,107  (2021 – 76,107) stock options.