XML 45 R32.htm IDEA: XBRL DOCUMENT v3.19.1
Asset Retirement Obligation (Tables)
3 Months Ended
Mar. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]  
Reconciliation of total reclamation liability for asset retirement obligations
The following is a reconciliation of the total reclamation liability for asset retirement obligations.
Balance at December 31, 2018
$
13,322

Additions and revisions of prior estimates
(113
)
Accretion expense
279

Settlement of liability
(1,235
)
Balance at March 31, 2019
$
12,253