Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue		$ 2,070,126	$ 1,054,006	$ 821,206
COSTS AND EXPENSES
Amortization		251,099	124,974	99,822
General and administrative		57,197	47,727	41,605
Pre-development, reclamation, and other		69,788	51,273	54,636
Total costs and expenses		1,363,113	889,824	859,921
Income (loss) from operations		707,013	164,182	(38,715)
OTHER INCOME (EXPENSE), NET
(Gain) loss on debt extinguishment		(113)	417	3,437
Fair value adjustments, net, pretax		(342)	0	3,384
Interest expense, net of capitalized interest		(30,942)	(51,276)	(29,099)
Other, net	[1]	6,922	13,027	(7,463)
Total other income (expense), net		(24,475)	(37,832)	(29,741)
Income (loss) before income and mining taxes		682,538	126,350	(68,456)
Income and mining tax (expense) benefit		(96,666)	(67,450)	(35,156)
NET INCOME (LOSS)		585,872	58,900	(103,612)
OTHER COMPREHENSIVE INCOME (LOSS), Net of Tax:
Unrealized gain (loss) on hedger, net of tax		0	(18,507)	(318)
Reclassification adjustments for realized (gain) loss on cash flow hedges		0	(17,176)	10,694
Other comprehensive income (loss)		0	(1,331)	(11,012)
COMPREHENSIVE INCOME (LOSS)		$ 585,872	$ 57,569	$ (114,624)
Basic EPS
Earnings Per Share, Basic		$ 0.96	$ 0.15	$ (0.30)
Diluted EPS
Earnings Per Share, Diluted		$ 0.95	$ 0.15	$ (0.30)
Accumulated Deficit [Member]
OTHER INCOME (EXPENSE), NET
NET INCOME (LOSS)		$ 585,872	$ 58,900	$ (103,612)
Product
COSTS AND EXPENSES
Costs applicable to sales	[2]	898,437	606,192	632,896
Mineral, Exploration
COSTS AND EXPENSES
Costs applicable to sales		$ 86,592	$ 59,658	$ 30,962

[1] See Note 15 -- Additional Comprehensive Income (Loss) Detail for additional detail.

[2] Excludes amortization.