Acquisitions - Narrative (Details) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended			15 Months Ended
	Feb. 14, 2025	Oct. 03, 2024	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2025
Business Combination [Line Items]
Common stock, shares issued (in shares)			642,092,761	642,092,761	399,235,632		642,092,761
Common stock, shares outstanding (in shares)			642,092,761	642,092,761	399,235,632		642,092,761
Inventories				$ 51,798	$ 69,640	$ 47,592
Fair value adjustments, net, pretax				342	0	(3,384)
Acquisition related costs				26,409	8,517	0
Business Combination, Total Transaction Costs				12,100			$ 20,600
Revenue				2,070,126	1,054,006	821,206
Metal sales
Business Combination [Line Items]
Revenue				2,070,126	$ 1,054,006	$ 821,206
Las Chispas
Business Combination [Line Items]
Fair value adjustments, net, pretax				0
Las Chispas | Metal sales
Business Combination [Line Items]
Revenue				$ 421,431
SilverCrest
Business Combination [Line Items]
Common stock, shares issued (in shares)	239,331,799		239,331,799	239,331,799			239,331,799
Common stock, shares outstanding (in shares)	239,331,799
Common shares issued (value)	$ 1,580,000		$ 1,581,983
Fair value of Coeur payable to SilverCrest repurchased			(72,311)
Inventories			$ (72,000)
Company Subsidary
Business Combination [Line Items]
Common stock portion, number of Coeur stock for each share of Silvercrest common stock converted (in shares)		1.6022