Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 142,712	$ 148,643
Marketable securities (note 5)	484,193	489,439
Accounts receivable	1,469	874
Prepaid expenses and other current assets	6,890	6,006
Total current assets	635,264	644,962
Marketable securities, long-term (note 5)	127,496	292,792
Operating lease right-of-use asset, net (note 7)	7,939	9,193
Property, plant and equipment, net (note 6)	10,278	9,653
Deferred tax assets (note 13)	9,666	802
Prepaid expenses, long-term	7,496	7,396
Total assets	798,139	964,798
Current liabilities:
Accounts payable and accrued liabilities (note 8)	34,221	25,974
Operating lease liability (note 7)	1,369	1,299
Total current liabilities	35,590	27,273
Operating lease liability, long-term (note 7)	7,646	9,604
Total liabilities	43,236	36,877
Shareholders’ equity:
Common shares, without par value; unlimited shares authorized; issued and outstanding: 76,416,086 (December 31, 2023 - 75,370,977) (note 9)	1,456,836	1,436,374
Additional paid-in capital	199,149	156,764
Accumulated deficit	(899,470)	(665,140)
Accumulated other comprehensive loss	(1,612)	(77)
Total shareholders' equity	754,903	927,921
Total liabilities and shareholders’ equity	798,139	964,798
Commitments and contingencies (note 12)