Accounts Payable and Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts payable and accruals	$ 981	$ 710
Accrued employee compensation and benefits	578	724
Value added tax payable		401
Income taxes payable		292
Accounts payable and other accrued liabilities	1,559	2,127
Accrued vacation	200	200
Withholding taxes and benefits payable	400	500
VAT receivables offset against VAT payable		73
Velardena properties
Accounts payable and accruals	400	300
Accrued employee compensation and benefits	400	500
Corporate, Exploration & Other
Accounts payable and accruals	$ 600	$ 300