Quarterly report pursuant to Section 13 or 15(d)

INVESTMENT IN AMAK AND DISCONTINUED OPERATIONS - Summary of Financial Position (Details)

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INVESTMENT IN AMAK AND DISCONTINUED OPERATIONS - Summary of Financial Position (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]            
Current assets $ 94,355   $ 105,896      
TOTAL ASSETS 303,810   316,833      
Current liabilities 33,006   29,584      
Stockholders' equity 198,099 $ 199,699 204,407 $ 181,165 $ 182,516 $ 171,443
TOTAL LIABILITIES AND EQUITY $ 303,810   316,833      
AMAK            
Schedule of Equity Method Investments [Line Items]            
Current assets     29,799      
Noncurrent assets     209,814      
TOTAL ASSETS     239,613      
Current liabilities     40,919      
Long term liabilities     79,122      
Stockholders' equity     119,572      
TOTAL LIABILITIES AND EQUITY     $ 239,613