Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 77,090	$ 112,517
Marketable securities (Notes 3 and 14)	11,625	494
Trade and other receivables, net of allowance for credit losses of $223 and $223, respectively	1,795	3,954
Inventories (Note 4)	27,331	30,772
Prepaid expenses and other assets	9,182	1,568
Total current assets	127,023	149,305
Other long-term receivables	1,517	0
Inventories (Note 4)	2,080	1,368
Operating lease right of use asset	175	408
Investments accounted for at fair value (Note 14)	22,865	38,538
Property, plant and equipment, net (Note 5)	20,899	21,983
Mineral properties (Note 5)	83,539	83,539
Restricted cash (Note 6)	20,986	20,305
Total assets	279,084	315,446
Current liabilities
Accounts payable and accrued liabilities (Note 11)	4,268	5,764
Current portion of operating lease liability	202	324
Current portion of asset retirement obligation (Note 6)	219	27
Total current liabilities	4,689	6,115
Operating lease liability	0	145
Asset retirement obligation (Note 6)	14,531	13,660
Total liabilities	19,220	19,920
Equity
Share capital Common shares, without par value, unlimited shares authorized; shares issued and outstanding 157,607,156 at September 30, 2022 and 156,262,199 at December 31, 2021	696,808	685,903
Accumulated deficit	(438,221)	(396,271)
Accumulated other comprehensive income	(2,581)	1,943
Total shareholders' equity	256,006	291,575
Non-controlling interests	3,858	3,951
Total equity	259,864	295,526
Total liabilities and equity	279,084	315,446
Commitments and contingencies (Note 12)