XML 39 R16.htm IDEA: XBRL DOCUMENT v3.20.1
Asset Retirement Obligation
3 Months Ended
Mar. 31, 2020
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligation Asset Retirement Obligation
The Company had a post-closure reclamation and site restoration obligation of $6,217 as of March 31, 2020. The following is a reconciliation of the total reclamation liability for asset retirement obligations.
Balance at December 31, 2019$6,142  
Accretion expense75  
Balance at March 31, 2020$6,217