Prepaids and Deposits, Net - Components of prepaids and other net and other assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Prepaids
Insurance	$ 2,995	$ 1,014
Mining claims and permitting fees	1,349	891
License fees	212	186
Other	63	56
Deposits	191	195
Total	4,810	2,342
Other assets, non-current
Royalty - advance payment on Crofoot Royalty	600	600
Total	$ 600	$ 600