Accounts Payable and Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts payable and accruals	$ 472	$ 710
Accrued employee compensation and benefits	846	724
Value added tax payable		401
Income taxes payable		292
Accounts payable and other accrued liabilities	1,318	2,127
Accrued vacation	300	200
Withholding taxes and benefits payable	500	500
VAT receivables offset against VAT payable		73
Velardena Properties
Accounts payable and accruals	300	300
Accrued employee compensation and benefits	600	500
Corporate, Exploration and Other
Accounts payable and accruals	$ 200	$ 300