Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share (Textual) [Abstract]
Number of antidilutive shares of common stock equivalents	12,917	61,467	1,777,273
Common stock, shares issued (in shares)	642,092,761	399,235,632
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Net Income (Loss) Attributable to Coeur Stockholders
NET INCOME (LOSS)	$ 585,872	$ 58,900	$ (103,612)
Weighted Average Number of Shares Outstanding
Weighted Average Number of Shares Outstanding, Basic	607,201,000	391,709,000	343,059,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	7,465,000	5,713,000	0
Weighted Average Number of Shares Outstanding, Diluted	614,666,000	397,422,000	343,059,000
Basic EPS
Earnings Per Share, Basic	$ 0.96	$ 0.15	$ (0.30)
Diluted EPS
Earnings Per Share, Diluted	$ 0.95	$ 0.15	$ (0.30)