Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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+ Details

Impairment of Goodwill (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Goodwill
Carrying value of goodwill		$ 487		$ 11,666
Impairment of goodwill	57,213	11,180	57,213
Velardena Operations
Goodwill
Carrying value of goodwill		500		11,700
Impairment of goodwill		$ 11,200
Discount rate (as a percent)		21.00%
Velardena Operations \| Gold \| Maximum
Goodwill
Metal prices used in analysis (in dollars per ounce)		1,440
Velardena Operations \| Gold \| Minimum
Goodwill
Metal prices used in analysis (in dollars per ounce)		1,296
Velardena Operations \| Silver \| Maximum
Goodwill
Metal prices used in analysis (in dollars per ounce)		23.80
Velardena Operations \| Silver \| Minimum
Goodwill
Metal prices used in analysis (in dollars per ounce)		18.06