Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Revenue	$ 1,054,006		$ 821,206		$ 785,636
COSTS AND EXPENSES
Amortization	124,974		99,822		111,626
General and administrative	47,727		41,605		39,460
Pre-development, reclamation, and other	51,273		54,636		40,647
Total costs and expenses	889,824		859,921		824,887
Income (loss) from operations	164,182		(38,715)		(39,251)
OTHER INCOME (EXPENSE), NET
Fair value adjustments, net, pretax	0		3,384		(66,668)
Interest expense, net of capitalized interest	(51,276)		(29,099)		(23,861)
Other, net	13,027	[1]	(7,463)		66,331
Total other income (expense), net	(37,832)		(29,741)		(24,198)
Income (loss) before income and mining taxes	126,350		(68,456)		(63,449)
Income and mining tax (expense) benefit	(67,450)		(35,156)		(14,658)
NET INCOME (LOSS)	58,900		(103,612)		(78,107)
OTHER COMPREHENSIVE INCOME (LOSS), Net of Tax:
Unrealized gain (loss) on hedger, net of tax	(18,507)		(318)		37,445
Reclassification adjustments for realized (gain) loss on cash flow hedges	(17,176)		10,694		23,890
Other comprehensive income (loss)	(1,331)		(11,012)		13,555
COMPREHENSIVE INCOME (LOSS)	$ 57,569		$ (114,624)		$ (64,552)
Basic EPS
Earnings Per Share, Basic	$ 0.15		$ (0.30)		$ (0.28)
Diluted EPS
Earnings Per Share, Diluted	$ 0.15		$ (0.30)		$ (0.28)
Gain on debt extinguishment	$ 417		$ 3,437		$ 0
Accumulated Deficit [Member]
OTHER INCOME (EXPENSE), NET
NET INCOME (LOSS)	58,900		(103,612)		(78,107)
Product
COSTS AND EXPENSES
Costs applicable to sales	606,192	[2]	632,896	[2]	606,530
Mineral, Exploration
COSTS AND EXPENSES
Costs applicable to sales	$ 59,658		$ 30,962		$ 26,624

[1] See Note 14 -- Additional Comprehensive Income (Loss) Detail for additional detail.

[2] Excludes amortization.