Prepaids and Deposits - Components of prepaids and other net and other assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Prepaids:
Insurance	$ 2,181	$ 1,221
Mining claims fees and permit fees	688	940
License fees	376	287
Other	193	154
Deposits	236	238
Total current prepaids and deposits	3,674	2,840
Non-current prepaids:
Royalty – advance payment on Crofoot Royalty	$ 600	$ 600