Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Shares	Pre-funded warrants	Additional paid-in capital	Cumulative translation adjustment	Accumulated deficit	Total
Increase (Decrease) in Stockholders' Equity and Temporary Equity
Number of warrants		11,417,034
Beginning balance at Dec. 31, 2020	$ 251,682	$ 48,007	$ 8,530	$ (1,634)	$ (163,466)	$ 143,119
Balance at the beginning of period (in shares) at Dec. 31, 2020	29,827,997
Increase (Decrease) in Stockholders' Equity and Temporary Equity
Net (loss) earnings					(11,744)	(11,744)
Exercise of stock options	$ 34		(15)			19
Exercise of stock options (in shares)	18,003
Private placement		$ 4,920				4,920
Private placement (in shares)		910,746
Share-based compensation			3,280			3,280
Ending balance at Jun. 30, 2021	$ 251,716	$ 52,927	11,795	(1,634)	(175,210)	139,594
Balance at the end of period (in shares) at Jun. 30, 2021	29,846,000
Increase (Decrease) in Stockholders' Equity and Temporary Equity
Number of warrants		11,417,034
Beginning balance at Mar. 31, 2021	$ 251,716	$ 48,007	9,883	(1,634)	(175,980)	131,992
Balance at the beginning of period (in shares) at Mar. 31, 2021	29,846,000
Increase (Decrease) in Stockholders' Equity and Temporary Equity
Net (loss) earnings					770	770
Private placement		$ 4,920				4,920
Private placement (in shares)		910,746
Share-based compensation			1,912			1,912
Ending balance at Jun. 30, 2021	$ 251,716	$ 52,927	11,795	(1,634)	(175,210)	$ 139,594
Balance at the end of period (in shares) at Jun. 30, 2021	29,846,000
Increase (Decrease) in Stockholders' Equity and Temporary Equity
Number of warrants		12,327,780
Number of warrants		12,327,780				12,327,780
Beginning balance at Dec. 31, 2021	$ 251,901	$ 52,941	15,711	(1,634)	(206,319)	$ 112,600
Balance at the beginning of period (in shares) at Dec. 31, 2021	29,897,559					29,897,559
Increase (Decrease) in Stockholders' Equity and Temporary Equity
Net (loss) earnings					(30,655)	$ (30,655)
Exercise of stock options	$ 335		(146)			189
Exercise of stock options (in shares)	108,325
Share-based compensation			4,525			4,525
Ending balance at Jun. 30, 2022	$ 252,236	$ 52,941	20,090	(1,634)	(236,974)	$ 86,659
Balance at the end of period (in shares) at Jun. 30, 2022	30,005,884					30,005,884
Increase (Decrease) in Stockholders' Equity and Temporary Equity
Number of warrants		12,327,780
Beginning balance at Mar. 31, 2022	$ 251,990	$ 52,941	17,785	(1,634)	(220,326)	$ 100,756
Balance at the beginning of period (in shares) at Mar. 31, 2022	29,917,326
Increase (Decrease) in Stockholders' Equity and Temporary Equity
Net (loss) earnings					(16,648)	(16,648)
Exercise of stock options	$ 246		(106)			140
Exercise of stock options (in shares)	88,558
Share-based compensation			2,411			2,411
Ending balance at Jun. 30, 2022	$ 252,236	$ 52,941	$ 20,090	$ (1,634)	$ (236,974)	$ 86,659
Balance at the end of period (in shares) at Jun. 30, 2022	30,005,884					30,005,884
Increase (Decrease) in Stockholders' Equity and Temporary Equity
Number of warrants		12,327,780				12,327,780