Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 87,621	$ 148,643
Marketable securities (note 6)	566,394	489,439
Accounts receivable	938	874
Prepaid expenses and other current assets	4,686	6,006
Total current assets	659,639	644,962
Marketable securities, long-term (note 6)	149,317	292,792
Operating lease right-of-use asset, net (note 7)	8,258	9,193
Property, plant and equipment, net	10,162	9,653
Deferred tax assets	1,054	802
Prepaid expenses, long-term	7,471	7,396
Total assets	835,901	964,798
Current liabilities:
Accounts payable and accrued expenses (note 8)	28,308	25,974
Operating lease liability (note 7)	1,387	1,299
Total current liabilities	29,695	27,273
Operating lease liability, long-term (note 7)	8,399	9,604
Total liabilities	38,094	36,877
Shareholders’ equity:
Common shares, without par value; unlimited shares authorized; issued and outstanding: 75,794,409 (December 31, 2023 - 75,370,977) (note 9)	1,441,814	1,436,374
Additional paid-in capital	188,442	156,764
Accumulated deficit	(833,785)	(665,140)
Accumulated other comprehensive income (loss)	1,336	(77)
Total shareholders' equity	797,807	927,921
Total liabilities and shareholders’ equity	835,901	964,798
Commitments and contingencies (note 10)