Reclamation (Tables)

3 Months Ended

Mar. 31, 2014

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation

Changes to the Company’s asset retirement obligations are as follows (in thousands):

	March 31, 2014			December 31, 2013
Asset retirement obligation - Beginning	$	57,454		$	34,457
Accretion	1,317			3,442
Additions and changes in estimates	—			20,236
Settlements	(311		)	(681		)
Asset retirement obligation - Ending	$	58,460		$	57,454