Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Current assets
Cash and cash equivalents	$ 41,562	$ 52,403
Accounts receivable	5,039	4,944
Prepaid expenses and other current assets	6,867	3,559
Marketable securities	70,117	43,591
Inventory, net	9,934	5,317
Total current assets	133,519	109,814
Mineral rights and properties, net	262,926	265,834
Property, plant and equipment, net	40,510	41,160
Intangible assets, net	1,256	1,465
Restricted cash	9,764	8,388
Right of use assets - operating lease	3,051	3,083
Other long-term assets	637	678
Total assets	451,663	430,422
Current liabilities
Operating lease liabilities, current	314	186
Total current liabilities	12,053	13,680
Deferred tax liabilities	26,190	26,384
Asset retirement obligations	18,994	18,915
Convertible senior notes	110,220	109,986
Operating lease liabilities, non-current	3,006	3,077
Total liabilities	170,463	172,042
Commitments and contingencies (Note 10)
Stockholders’ equity
Common stock 194,216,153 and 187,354,424 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively	409,567	382,842
Additional paid-in-capital	50,329	56,733
Accumulated deficit	(202,300)	(207,704)
Accumulated other comprehensive loss	(2,817)	(2,626)
Total stockholders' equity	254,779	229,245
Non-controlling interests	26,421	29,135
Total equity	281,200	258,380
Total liabilities and stockholders' equity	451,663	430,422
Nonrelated party
Current liabilities
Accounts payable and accrued liabilities	11,611	12,434
Related party
Current liabilities
Accounts payable and accrued liabilities	$ 128	$ 1,060