Prepaids and Other - Narrative (Details) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
Prepaid insurance | $ 1,800 | $ 1,500 |
Prepaid mining claims and permitting fees | 400 | 400 |
Prepaid equipment | 400 | |
Prepaid subscription and license fees | 300 | 100 |
Impairment on equipment not in use - Note 5 | $ 5,331 | $ 63 |
Royalty payment, percentage of net profit | 4.00% | |
Held-for-sale | ||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
Impairment on equipment not in use - Note 5 | $ 5,300 |