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
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]            
Current assets $ 109,502   $ 84,090      
TOTAL ASSETS 322,320   301,819      
Current liabilities 33,796   28,635      
Stockholders' equity 204,086 $ 181,165 171,443 $ 190,820 $ 189,957 $ 185,161
TOTAL LIABILITIES AND EQUITY 322,320   301,819      
AMAK            
Schedule of Equity Method Investments [Line Items]            
Current assets 37,945   45,354      
Noncurrent assets 204,865   196,564      
TOTAL ASSETS 242,810   241,918      
Current liabilities 23,622   27,645      
Long term liabilities 100,698   79,348      
Stockholders' equity 118,490   134,925      
TOTAL LIABILITIES AND EQUITY $ 242,810   $ 241,918