Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended						9 Months Ended
	Sep. 13, 2023	Mar. 17, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Jul. 20, 2023	Jun. 21, 2023	Dec. 31, 2022
Earnings Per Share (Textual) [Abstract]
Number of antidilutive shares of common stock equivalents			1,090,981			3,719,764			1,641,510	2,013,571
Common stock, shares issued (in shares)			382,693,309						382,693,309		3,000,000	5,276,154	295,697,624
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01						$ 0.01			$ 0.01	$ 0.01
Common stock issued for investment (in shares)	21,699,856	32,861,580
Net Income (Loss) Attributable to Coeur Stockholders
NET INCOME (LOSS)			$ (21,109)	$ (32,412)	$ (24,586)	$ (57,444)	$ (77,434)	$ 7,682	$ (78,107)	$ (127,196)
Weighted Average Number of Shares Outstanding
Weighted Average Number of Shares Outstanding, Basic			356,676,000			278,105,000			330,440,000	272,599,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements			0			0			0	0
Weighted Average Number of Shares Outstanding, Diluted			356,676,000			278,105,000			330,440,000	272,599,000
Basic EPS
Earnings Per Share, Basic			$ (0.06)			$ (0.21)			$ (0.24)	$ (0.47)
Diluted EPS
Earnings Per Share, Diluted			$ (0.06)			$ (0.21)			$ (0.24)	$ (0.47)
Private Placement
Earnings Per Share (Textual) [Abstract]
Proceeds from (Repurchase of) Equity									$ 18,200
Proceeds from repurchase									5,100
Over-Allotment Option
Earnings Per Share (Textual) [Abstract]
Proceeds from (Repurchase of) Equity									10,500
Proceeds from repurchase									$ 2,700