Shareholders Equity - Stock Option Activity (Details) - Stock options	3 Months Ended
	Mar. 31, 2021 $ / shares shares	Dec. 31, 2020 $ / shares shares	Mar. 15, 2019 $ / $
Share Compensation Plan
Average share price, converted to US$ using rate of Cdn | $ / $			1.33
Number of Options Outstanding
Balance at period-end (in shares) | shares	245,000	245,000
Exercisable at period-end (in shares) | shares	245,000	245,000
Weighted average exercise price
Balance at period-end (in dollars per share) | $ / shares	$ 5.27	$ 5.27
Exercisable at period-end (in dollars per share) | $ / shares	$ 5.27	$ 5.27
Additional disclosures
Weighted average expected remaining term	2 years 2 months 12 days