Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	2020 Employee Share Purchase Plan	Common Shares	Common Shares 2020 Employee Share Purchase Plan	Additional Paid-in Capital	Additional Paid-in Capital 2020 Employee Share Purchase Plan	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance at Dec. 31, 2021	$ 288,421		$ 480,699		$ 17,988			$ (210,266)
Balance, Shares at Dec. 31, 2021			41,850,162
Exercise of stock options	28		$ 46		(18)
Exercise of stock options, Shares			12,235
Share-based compensation expense	4,755				4,755
Issuance of common shares under the 2020 Employee Share Purchase Plan		$ 213		$ 303		$ (90)
Issuance of common shares under the 2020 Employee Share Purchase Plan, Shares				16,807
Net loss and comprehensive loss	(34,757)							(34,757)
Balance at Mar. 31, 2022	258,660		$ 481,048		22,635			(245,023)
Balance, Shares at Mar. 31, 2022			41,879,204
Balance at Dec. 31, 2022	279,517		$ 482,032		37,226		$ (428)	(239,313)
Balance, Shares at Dec. 31, 2022			42,036,193
Exercise of stock options	$ 4		$ 7		(3)
Exercise of stock options, Shares	2,000		2,000
Share-based compensation expense	$ 6,062				6,062
Issuance of common shares under the 2020 Employee Share Purchase Plan		$ 409		$ 638		$ (229)
Issuance of common shares under the 2020 Employee Share Purchase Plan, Shares				41,703
Other comprehensive gain	193						193
Net loss	(34,941)							(34,941)
Balance at Mar. 31, 2023	$ 251,244		$ 482,677		$ 43,056		$ (235)	$ (274,254)
Balance, Shares at Mar. 31, 2023			42,079,896