CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Assets:
Cash and cash equivalents	$ 68,768	$ 49,560
Prepaids and deposits	3,337	2,863
Supplies inventories, net	1,311	1,354
Equity securities	1,109	454
Receivables	272	369
Current assets	74,797	54,600
Property, plant, and equipment and assets held-for-sale, net	56,697	57,286
Restricted cash	30,001	27,498
Prepaids	652	600
Equity securities	0	151
Total assets	162,147	140,135
Liabilities:
Asset retirement obligation	179	179
Accounts payable, accrued expenses, and other liabilities	2,692	5,561
Debt, net	28	54
Current liabilities	2,899	5,794
Debt, net	131,007	124,945
Deferred gain on sale of royalty	29,839	29,839
Asset retirement obligation	13,638	12,972
Other liabilities	23	0
Total liabilities	177,406	173,550
Commitments and contingencies
Stockholders’ deficit
Common stock, $0.0001 par value; 1,400,000,000 shares authorized; 37,838,479 issued and outstanding at June 30, 2025, and 24,875,587 issued and outstanding at December 31, 2024, respectively	22	21
Additional paid-in capital	794,281	752,630
Accumulated deficit	(809,562)	(786,066)
Total stockholders’ deficit	(15,259)	(33,415)
Total liabilities and stockholders’ deficit	$ 162,147	$ 140,135