Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 135,381	$ 142,712
Marketable securities (note 5)	352,164	484,193
Other receivables	1,097	1,469
Prepaid expenses and other current assets	11,610	6,890
Total current assets	500,252	635,264
Marketable securities, long-term (note 5)	137,297	127,496
Operating lease right-of-use asset, net (note 6)	7,290	7,939
Property, plant and equipment, net	9,205	10,278
Deferred tax assets	11,049	9,666
Prepaid expenses, long-term	9,188	7,496
Total assets	674,281	798,139
Current liabilities:
Accounts payable and accrued liabilities (note 7)	31,588	34,221
Operating lease liability (note 6)	1,459	1,369
Total current liabilities	33,047	35,590
Operating lease liability, long-term (note 6)	7,256	7,646
Total liabilities	40,303	43,236
Shareholders’ equity:
Common shares, without par value; unlimited shares authorized; issued and outstanding: 76,939,811 (December 31, 2024 - 76,416,086) (note 8)	1,469,196	1,456,836
Additional paid-in capital	213,892	199,149
Accumulated deficit	(1,049,223)	(899,470)
Accumulated other comprehensive income (loss)	113	(1,612)
Total shareholders' equity	633,978	754,903
Total liabilities and shareholders’ equity	674,281	798,139
Commitments and contingencies (note 11)