Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Sales	$ 245,657	$ 178,131	$ 435,185	$ 377,631
Cost of sales and other direct production costs	140,464	107,754	261,925	233,304
Depreciation, depletion and amortization	53,763	32,718	102,670	71,720
Total cost of sales	194,227	140,472	364,595	305,024
Gross profit	51,430	37,659	70,590	72,607
Other operating expenses:
General and administrative	14,740	10,783	25,956	22,853
Exploration and pre-development	6,682	6,893	11,024	11,860
Ramp-up and suspension costs	5,538	16,323	20,061	27,659
Provision for closed operations and environmental matters	1,153	3,111	2,139	4,155
Other operating income, net	(17,283)	(4,262)	(34,254)	(4,284)
Total other operating expenses	10,830	32,848	24,926	62,243
Income from operations	40,600	4,811	45,664	10,364
Other expense:
Interest expense	(12,505)	(10,311)	(25,149)	(20,476)
Fair value adjustments, net	5,002	(2,558)	3,150	623
Net foreign exchange gain (loss)	2,673	(3,850)	6,655	(3,742)
Other income	1,180	1,376	2,692	2,768
Total other expense	(3,650)	(15,343)	(12,652)	(20,827)
Income (loss) before income and mining taxes	36,950	(10,532)	33,012	(10,463)
Income and mining tax provision	(9,080)	(5,162)	(10,895)	(8,404)
Net Income (Loss)	27,870	(15,694)	22,117	(18,867)
Preferred stock dividends	(138)	(138)	(276)	(276)
Net income (loss) applicable to common stockholders	27,732	(15,832)	21,841	(19,143)
Comprehensive income (loss):
Net income (loss)	27,870	(15,694)	22,117	(18,867)
Change in fair value of derivative contracts designated as hedge transactions	(6,488)	5,232	(11,891)	11,748
Comprehensive income (loss)	$ 21,382	$ (10,462)	$ 10,226	$ (7,119)
Basic income (loss) per common share after preferred dividends	$ 0.04	$ (0.03)	$ 0.04	$ (0.03)
Diluted income (loss) per common share after preferred dividends	$ 0.04	$ (0.03)	$ 0.04	$ (0.03)
Weighted average number of common shares outstanding - basic	617,106	604,088	616,649	602,077
Weighted average number of common shares outstanding - diluted	622,206	604,088	621,936	602,077