Related Party Transactions (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Options granted to the Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Salaries, Wages and Officers' Compensation	$ 3	$ 3
Options granted to the Chief Financial Officer [Member]
Related Party Transaction [Line Items]
Salaries, Wages and Officers' Compensation	3	3
Options granted to the Vice President, Operations [Member]
Related Party Transaction [Line Items]
Salaries, Wages and Officers' Compensation	2	7
Options granted to the Vice-President, Research and Development [Member]
Related Party Transaction [Line Items]
Salaries, Wages and Officers' Compensation	2	2
Options granted to Vice-President, Business and Corporate Development [Member]
Related Party Transaction [Line Items]
Salaries, Wages and Officers' Compensation	2	2
Options granted to the Vice-President, Intellectual Property and Legal Affairs [Member]
Related Party Transaction [Line Items]
Salaries, Wages and Officers' Compensation	4	4
Director fees [Member]
Related Party Transaction [Line Items]
Salaries, Wages and Officers' Compensation	67	58
Deferred share units [Member]
Related Party Transaction [Line Items]
Salaries, Wages and Officers' Compensation	$ 68	$ 115