Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	2020 Employee Share Purchase Plan	Follow On Offering	Common Shares	Common Shares 2020 Employee Share Purchase Plan	Common Shares Follow On Offering	Additional Paid-in Capital	Additional Paid-in Capital 2020 Employee Share Purchase Plan	Accumulated Other Comprehensive Income	Accumulated Deficit
Balance at Dec. 31, 2020	$ 286,830			$ 384,313			$ 5,875			$ (103,358)
Balance, Shares at Dec. 31, 2020				36,902,924
Exercise of vested stock options	986			$ 1,578			(592)
Exercise of vested stock options, Shares				333,996
Share-based compensation expense	12,829						12,829
Issuance of common shares	113		$ 94,288	$ 113		$ 94,288
Issuance of common shares, Shares				3,299		4,600,000
Issuance of common shares under the 2020 Employee Share Purchase Plan		$ 283			$ 407			$ (124)
Issuance of common shares under the 2020 Employee Share Purchase Plan, Shares					9,943
Net loss and comprehensive loss	(106,908)									(106,908)
Balance at Dec. 31, 2021	288,421			$ 480,699			17,988			(210,266)
Balance, Shares at Dec. 31, 2021				41,850,162
Exercise of vested stock options	$ 447			$ 708			(261)
Exercise of vested stock options, Shares	148,116			148,116
Share-based compensation expense	$ 19,691						19,691
Issuance of common shares under the 2020 Employee Share Purchase Plan		$ 433			$ 625			$ (192)
Issuance of common shares under the 2020 Employee Share Purchase Plan, Shares					37,915
Other comprehensive loss	(428)								$ (428)
Net loss	(29,047)									(29,047)
Balance at Dec. 31, 2022	$ 279,517			$ 482,032			$ 37,226		$ (428)	$ (239,313)
Balance, Shares at Dec. 31, 2022				42,036,193