ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Schedule Of Accrued Liabilities [Line Items]
Property taxes	$ 1,811	$ 0
Payroll	1,789	1,250
Royalties	544	273
Officer compensation	674	1,687
Legal	161	212
AMAK transaction costs	1,000	1,000
Other	1,205	1,103
Total	7,801	5,740
State and Local Jurisdiction
Schedule Of Accrued Liabilities [Line Items]
Income taxes	297	215
Foreign Tax Authority
Schedule Of Accrued Liabilities [Line Items]
Income taxes	$ 320	$ 0