Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share (Textual) [Abstract]
Number of antidilutive shares of common stock equivalents	112,610	1,712,033
Net Income (Loss) Attributable to Coeur Stockholders
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	$ 2,060	$ (11,900)
NET INCOME (LOSS)	$ 2,060	$ (11,900)
Weighted Average Number of Shares Outstanding
Weighted Average Number of Shares Outstanding, Basic	241,397,000	240,255,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	3,123,000	0
Weighted Average Number of Shares Outstanding, Diluted	244,520,000	240,255,000
Basic EPS
Earnings Per Share, Basic	$ 0.01	$ (0.05)
Diluted EPS
Earnings Per Share, Diluted	$ 0.01	$ (0.05)