Quarterly report pursuant to Section 13 or 15(d)

INVESTMENT IN AMAK (Held-for-Sale) - Summary of Financial Position (Details)

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INVESTMENT IN AMAK (Held-for-Sale) - Summary of Financial Position (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]            
Current assets $ 106,349   $ 84,090      
TOTAL ASSETS 321,877   301,819      
Current liabilities 27,119   28,635      
Stockholders' equity 181,165 $ 182,516 171,443 $ 189,957 $ 187,189 $ 185,161
TOTAL LIABILITIES AND EQUITY 321,877   301,819      
AMAK            
Schedule of Equity Method Investments [Line Items]            
Current assets 41,193   45,354      
Noncurrent assets 200,828   196,564      
TOTAL ASSETS 242,021   241,918      
Current liabilities 23,307   27,645      
Long term liabilities 86,508   79,348      
Stockholders' equity 132,206   134,925      
TOTAL LIABILITIES AND EQUITY $ 242,021   $ 241,918