Quarterly report pursuant to Section 13 or 15(d)

Asset Retirement and Reclamation Obligations (Details)

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Asset Retirement and Reclamation Obligations (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Beginning of year $ 17,279 $ 957
Liabilities incurred 0 10,639
Assumed in Pathfinder Mining Corporation purchase 0 5,656
Accretion expense 77 27
End of period $ 17,356 $ 17,279