Asset Retirement and Reclamation Liabilities (Tables)

3 Months Ended

Mar. 31, 2019

Asset Retirement Obligation and Reclamation Liabilities

Summary of activity in the Velardena Properties ARO

	Three Months Ended
	March 31,
	2019		2018
	(in thousands)
Beginning balance	$	2,660	$	2,448
Changes in estimates, and other		(60)		1
Accretion expense		55		51
Ending balance	$	2,655	$	2,500