Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Earnings Per Share (Textual) [Abstract]
Number of antidilutive shares of common stock equivalents	0			29,130			1,100,000	103,916
Common stock, shares issued (in shares)	642,210,145						642,210,145		399,235,632
Common stock, par value (in dollars per share)	$ 0.01						$ 0.01		$ 0.01
Net Income (Loss) Attributable to Coeur Stockholders
NET INCOME (LOSS)	$ 266,824	$ 70,726	$ 33,353	$ 48,739	$ 1,426	$ (29,117)	$ 370,903	$ 21,048
Weighted Average Number of Shares Outstanding
Weighted Average Number of Shares Outstanding, Basic	637,788,000			393,969,000			596,939,000	390,936,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	7,091,000			6,869,000			6,579,000	5,442,000
Weighted Average Number of Shares Outstanding, Diluted	644,879,000			400,838,000			603,518,000	396,378,000
Basic EPS
Earnings Per Share, Basic	$ 0.42			$ 0.12			$ 0.62	$ 0.05
Diluted EPS
Earnings Per Share, Diluted	$ 0.41			$ 0.12			$ 0.61	$ 0.05