RECLAMATION PROVISION (Details) (USD $)			3 Months Ended
Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Goldex mine
Environmental remediation liability
Environmental remediation			$ 2,500,000
Environmental remediation liability			20,100,000
Environmental remediation liability, current	$ 14,158,000	$ 16,816,000	$ 9,500,000

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Current portion of reclamation reserve to restore a mining or drilling site to the condition agreed upon within the mining or drilling contract.

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- Definition

The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

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