Acquisitions - Narrative (Details) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended		18 Months Ended
	Mar. 20, 2026	Nov. 02, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Dec. 31, 2025
Business Combination [Line Items]
Common stock, shares issued (in shares)			1,028,536,378		1,028,536,378		1,028,536,378	642,092,761
Common stock, shares outstanding (in shares)			1,028,536,378		1,028,536,378		1,028,536,378	642,092,761
Inventories			$ 24,463	$ 14,125	$ 51,266	$ 22,473
Fair value adjustments, net, pretax			0	(4)	0	342
Acquisition related costs			3,954	2,823	23,864	11,710
Business Combination, Total Transaction Costs					23,900		$ 38,100
Revenue			1,085,592	$ 480,650	1,941,784	840,712
NewGold
Business Combination [Line Items]
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent			(52,000)		(69,900)
NewGold | Metal sales
Business Combination [Line Items]
Revenue			438,100		$ 572,300
SilverCrest
Business Combination [Line Items]
Inventories						$ 72,000
NewGold
Business Combination [Line Items]
Common stock, shares issued (in shares)	392,682,578
Common stock, shares outstanding (in shares)	392,682,578
Common shares issued (value)	$ 6,900,000		$ 6,938,701
Company Subsidary
Business Combination [Line Items]
Common stock portion, number of Coeur stock for each share of Silvercrest common stock converted (in shares)		0.4959