UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating expenses:
Exploration and development costs	$ 2,344	$ 5,053	$ 5,343	$ 9,956
General and administrative costs	3,478	3,906	6,411	6,820
Mine site costs	2,673	2,488	5,153	5,072
Depreciation and amortization	498	567	1,032	1,183
Asset retirement obligation adjustments and accretion expense	333	2,267	666	4,491
Gain on asset sales	(11)	(3,751)	(68)	(5,060)
Loss from operations	(9,315)	(10,530)	(18,537)	(22,462)
Non-operating income and (expense):
Interest income	687	1,058	1,400	2,353
Other income (loss)	370	(490)	507	(483)
Interest expense	(3,479)	(3,218)	(6,866)	(13,338)
Net loss	$ (11,737)	$ (13,180)	$ (23,496)	$ (33,930)
Loss per share:
Basic (in dollars per share)	$ (0.43)	$ (0.57)	$ (0.89)	$ (1.55)
Diluted (in dollars per share)	$ (0.43)	$ (0.57)	$ (0.89)	$ (1.55)
Weighted average shares outstanding:
Basic (in shares)	27,584,548	22,983,276	26,273,721	21,903,372
Diluted (in shares)	27,584,548	22,983,276	26,273,721	21,903,372