Acquisition of Joaquin Mineral Interests (Details) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 21, 2012
Business Acquisition [Line Items]
Number of shares issued for acquisition (in shares)	1,310,043
Price per share of stock issued for acquisition (in usd per share)	$ 22.90
Joaquin Project - Argentina [Member]
Business Acquisition [Line Items]
Coeur stock issues (1,310,043 at $22.90)	$ 30,000
Cash Payments	30,000
Transaction advisory fees and other costs	1,224
Total purchase price	61,224
Current liabilities	80
Deferred income taxes	32,540
Total liabilities assumed	32,620
Total consideration transferred	$ 93,844