Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Sales	$ 245,085	$ 181,906	$ 680,270	$ 559,537
Cost of sales and other direct production costs	144,855	112,212	406,780	345,516
Depreciation, depletion and amortization	40,944	36,217	143,614	107,937
Total cost of sales	185,799	148,429	550,394	453,453
Gross profit	59,286	33,477	129,876	106,084
Other operating expenses:
General and administrative	10,401	7,596	36,357	30,449
Exploration and pre-development	10,553	13,686	21,577	25,546
Ramp-up and suspension costs	13,679	21,025	33,740	48,684
Provision for closed operations and environmental matters	1,542	2,256	3,681	6,411
Writedown of property, plant and equipment	14,464	0	14,464	0
Other operating (income) expense, net	(13,828)	1,555	(48,082)	(2,729)
Total other operating expenses	36,811	46,118	61,737	108,361
Income (loss) from operations	22,475	(12,641)	68,139	(2,277)
Other expense:
Interest expense	(10,901)	(10,710)	(36,050)	(31,186)
Fair value adjustments, net	3,654	(6,397)	6,804	(5,774)
Net foreign exchange gain (loss)	(3,246)	4,176	3,409	434
Other income	1,229	1,657	3,921	4,425
Total other expense	(9,264)	(11,274)	(21,916)	(32,101)
Income (loss) before income and mining taxes	13,211	(23,915)	46,223	(34,378)
Income and mining tax (provision) benefit	(11,450)	1,500	(22,345)	(6,904)
Net Income (Loss)	1,761	(22,415)	23,878	(41,282)
Preferred stock dividends	(138)	(138)	(414)	(414)
Net income (loss) applicable to common stockholders	1,623	(22,553)	23,464	(41,696)
Comprehensive income (loss):
Net income (loss)	1,761	(22,415)	23,878	(41,282)
Change in fair value of derivative contracts designated as hedge transactions	3,171	(11,384)	(8,720)	364
Comprehensive income (loss)	$ 4,932	$ (33,799)	$ 15,158	$ (40,918)
Basic income (loss) per common share after preferred dividends	$ 0	$ (0.04)	$ 0.04	$ (0.07)
Diluted income (loss) per common share after preferred dividends	$ 0	$ (0.04)	$ 0.04	$ (0.07)
Weighted average number of common shares outstanding - basic	621,921	607,896	618,419	604,028
Weighted average number of common shares outstanding - diluted	625,739	607,896	621,792	604,028