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 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 stock options	183		$ 297		(114)
Exercise of stock options, Shares			87,786
Share-based compensation expense	2,057				2,057
Net loss and comprehensive loss	(21,417)						(21,417)
Balance at Mar. 31, 2021	267,653		$ 384,610		7,818		(124,775)
Balance, Shares at Mar. 31, 2021			36,990,710
Balance at Dec. 31, 2020	286,830		$ 384,313		5,875		(103,358)
Balance, Shares at Dec. 31, 2020			36,902,924
Net loss and comprehensive loss	(47,726)
Balance at Jun. 30, 2021	245,089		$ 385,454		10,719		(151,084)
Balance, Shares at Jun. 30, 2021			37,109,506
Balance at Mar. 31, 2021	267,653		$ 384,610		7,818		(124,775)
Balance, Shares at Mar. 31, 2021			36,990,710
Exercise of stock options	449		$ 731		(282)
Exercise of stock options, Shares			115,497
Share-based compensation expense	3,183				3,183
Issuance of common shares	113		$ 113
Issuance of common shares, Shares			3,299
Net loss and comprehensive loss	(26,309)						(26,309)
Balance at Jun. 30, 2021	245,089		$ 385,454		10,719		(151,084)
Balance, Shares at Jun. 30, 2021			37,109,506
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, 2021	$ 288,421		$ 480,699		17,988		(210,266)
Balance, Shares at Dec. 31, 2021			41,850,162
Exercise of stock options, Shares	56,503
Net loss and comprehensive loss	$ (72,850)
Balance at Jun. 30, 2022	225,517		$ 481,380		27,253		(283,116)
Balance, Shares at Jun. 30, 2022			41,923,472
Balance at Mar. 31, 2022	258,660		$ 481,048		22,635		(245,023)
Balance, Shares at Mar. 31, 2022			41,879,204
Exercise of stock options	205		$ 332		(127)
Exercise of stock options, Shares			44,268
Share-based compensation expense	4,745				4,745
Net loss and comprehensive loss	(38,093)						(38,093)
Balance at Jun. 30, 2022	$ 225,517		$ 481,380		$ 27,253		$ (283,116)
Balance, Shares at Jun. 30, 2022			41,923,472