UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Cash flows used in operating activities:
Net loss	$ (69,037)	$ (23,496)
Adjustments to reconcile net loss for the period to net cash used in operating activities:
Stock-based compensation	32,166	1,164
Depreciation and amortization	688	1,032
Asset retirement obligation adjustments and accretion	(5,124)	666
(Gain) loss on sale of assets, net	114	(68)
Other non-cash items	181	(484)
Non-cash interest expense	0	6,076
Changes in operating assets and liabilities:
Prepaids and deposits	(144)	(527)
Receivables	309	97
Contract liabilities	750	0
Supplies inventories, net	(199)	30
Accounts payable, accrued expenses, and other liabilities	(3,767)	(3,208)
Net cash used in operating activities	(44,063)	(18,718)
Cash flows from investing activities:
Additions to property, plant, and equipment	(847)	(397)
Proceeds from sale of assets	68	68
Proceeds from sale of equity investment securities	625	0
Net cash used in investing activities	(154)	(329)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of issuance costs	79,215	40,784
Taxes paid related to net share settlement of equity awards	(4,197)	0
Principal payments	0	(25)
Net cash provided by financing activities	75,018	40,759
Net increase in cash, cash equivalents, and restricted cash	30,801	21,712
Cash, cash equivalents, and restricted cash, beginning of period	204,231	77,057
Cash, cash equivalents, and restricted cash, end of period	235,032	98,769
Reconciliation of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	220,549	68,768
Restricted cash	14,483	30,001
Total cash, cash equivalents, and restricted cash	$ 235,032	$ 98,769