Related Party Transactions (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 27, 2019	Mar. 31, 2019	Mar. 31, 2018
Deferred Share Units [Member]
Salaries, Wages and Officers' Compensation	$ 179	$ 210
Options granted to the Chief Executive Officer [Member]
Salaries, Wages and Officers' Compensation		20	8
Options granted to the Chief Financial Officer [Member]
Salaries, Wages and Officers' Compensation		14	3
Options granted to the former Vice President, Operations [Member]
Salaries, Wages and Officers' Compensation		5	3
Options granted to the Vice-President, Research and Development [Member]
Salaries, Wages and Officers' Compensation		8	4
Options granted to Vice- President, Business and Corporate Development [Member]
Salaries, Wages and Officers' Compensation		8	11
Options granted to non-employee directors [Member]
Salaries, Wages and Officers' Compensation			3
Director fees [Member]
Salaries, Wages and Officers' Compensation		$ 58	$ 69