Condensed Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Shares	Treasury Shares	Additional Paid-in Capital	Accumulated Deficit
Balance, Treasury Shares (in shares)			(7,486,767)
Balance at Dec. 31, 2021	$ 667,099	$ 294,027	$ (60,726)	$ 1,855,246	$ (1,421,448)
Balance (in shares) at Dec. 31, 2021		404,084,775
Exercise of stock options	30	$ 6		24
Exercise of stock options (in shares)		10,602
Vesting of restricted stock units	(535)	$ 331	$ (535)	(331)
Vesting of restricted stock units (in shares)		493,381	(161,083)
Stock-based compensation	6,078			6,078
Loss for the period	(31,563)				(31,563)
Balance at Mar. 31, 2022	641,109	$ 294,364	$ (61,261)	1,861,017	(1,453,011)
Balance (in shares) at Mar. 31, 2022		404,588,758
Balance at Dec. 31, 2021	$ 667,099	$ 294,027	(60,726)	1,855,246	(1,421,448)
Balance (in shares) at Dec. 31, 2021		404,084,775
Exercise of stock options (in shares)	25,247
Loss for the period	$ (101,519)
Balance at Jun. 30, 2022	580,043	$ 294,659	$ (61,419)	1,869,770	(1,522,967)
Balance (in shares) at Jun. 30, 2022		405,056,452
Balance, Treasury Shares (in shares)			(7,647,850)
Balance at Mar. 31, 2022	641,109	$ 294,364	$ (61,261)	1,861,017	(1,453,011)
Balance (in shares) at Mar. 31, 2022		404,588,758
Issuance of common stock under employee stock purchase plan	383	$ 166		217
Issuance of common stock under employee stock purchase plan (in shares)		265,214
Exercise of stock options	19	$ 9		10
Exercise of stock options (in shares)		14,645
Vesting of restricted stock units	(158)	$ 120	$ (158)	(120)
Vesting of restricted stock units (in shares)		187,835	(61,551)
Stock-based compensation	8,646			8,646
Loss for the period	(69,956)				(69,956)
Balance at Jun. 30, 2022	$ 580,043	$ 294,659	$ (61,419)	1,869,770	(1,522,967)
Balance (in shares) at Jun. 30, 2022		405,056,452
Balance, Treasury Shares (in shares)			(7,709,401)
Balance, Treasury Shares (in shares)	7,986,831		(7,986,831)
Balance at Dec. 31, 2022	$ 595,333	$ 299,002	$ (61,770)	1,885,352	(1,527,251)
Balance (in shares) at Dec. 31, 2022		412,333,087
Exercise of stock options	1,871	$ 744		1,127
Exercise of stock options (in shares)		1,232,263
Vesting of restricted stock units	(1,507)	$ 1,539	$ (1,507)	(1,539)
Vesting of restricted stock units (in shares)		2,514,948	(827,523)
Stock-based compensation	5,556			5,556
Loss for the period	(16,460)				(16,460)
Balance at Mar. 31, 2023	584,793	$ 301,285	$ (63,277)	1,890,496	(1,543,711)
Balance (in shares) at Mar. 31, 2023		416,080,298
Balance at Dec. 31, 2022	$ 595,333	$ 299,002	(61,770)	1,885,352	(1,527,251)
Balance (in shares) at Dec. 31, 2022		412,333,087
Exercise of stock options (in shares)	1,238,263
Loss for the period	$ (34,020)
Balance at Jun. 30, 2023	569,128	$ 301,906	$ (63,464)	1,891,957	(1,561,271)
Balance (in shares) at Jun. 30, 2023		417,092,401
Balance, Treasury Shares (in shares)			(8,814,354)
Balance at Mar. 31, 2023	584,793	$ 301,285	$ (63,277)	1,890,496	(1,543,711)
Balance (in shares) at Mar. 31, 2023		416,080,298
Issuance of common stock under employee stock purchase plan	240	$ 127		113
Issuance of common stock under employee stock purchase plan (in shares)		205,861
Exercise of stock options	7	$ 4		3
Exercise of stock options (in shares)		6,000
Vesting of restricted stock units	(187)	$ 490	$ (187)	(490)
Vesting of restricted stock units (in shares)		800,242	(144,240)
Stock-based compensation	1,835			1,835
Loss for the period	(17,560)				(17,560)
Balance at Jun. 30, 2023	$ 569,128	$ 301,906	$ (63,464)	$ 1,891,957	$ (1,561,271)
Balance (in shares) at Jun. 30, 2023		417,092,401
Balance, Treasury Shares (in shares)	8,958,594		(8,958,594)