Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Net Income (Loss) Attributable to Coeur Stockholders
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		$ (24,894)	$ 691
Income (loss) from discontinued operations		5,693	550
NET INCOME (LOSS)		$ (19,201)	$ 1,241
Weighted Average Number of Shares Outstanding
Weighted Average Number of Shares Outstanding, Basic		202,422,000	184,367,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements		0	3,254,000
Weighted Average Number of Shares Outstanding, Diluted		202,422,000	187,621,000
Basic EPS
Income (Loss) from Continuing Operations, Per Basic Share		$ (0.120)	$ 0.004
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share		0.030	0.003
Earnings Per Share, Basic	[1]	(0.090)	0.007
Diluted EPS
Income (Loss) from Continuing Operations, Per Diluted Share		(0.120)	0.004
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share		0.030	0.003
Earnings Per Share, Diluted	[1]	$ (0.090)	$ 0.007
Stock Options [Member]
Earnings Per Share (Textual) [Abstract]
Number of antidilutive shares of common stock equivalents		2,593,294	496,064

[1] Due to rounding, the sum of net income per share from continuing operations and discontinued operations may not equal net income per share.