Accounts Payable and Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts payable and accruals	$ 1,521	$ 472
Accrued employee compensation and benefits	1,148	846
Accounts payable and other accrued liabilities	2,669	1,318
Accrued vacation	300	300
Withholding taxes and benefits payable	800	500
Velardena Properties
Accounts payable and accruals	1,200	300
Accrued employee compensation and benefits	900	600
Corporate, Exploration and Other
Accounts payable and accruals	$ 300	$ 200