Annual report pursuant to Section 13 and 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
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]          
Current assets $ 105,896   $ 84,090    
TOTAL ASSETS 316,833   301,819    
Current liabilities 29,584   28,635    
Stockholders' equity 204,407   171,443 $ 185,161 $ 185,011
TOTAL LIABILITIES AND EQUITY $ 316,833   301,819    
AMAK          
Schedule of Equity Method Investments [Line Items]          
Current assets   $ 29,799 45,354    
Noncurrent assets   209,814 196,564    
TOTAL ASSETS   239,613 241,918    
Current liabilities   40,919 27,645    
Long term liabilities   79,122 79,348    
Stockholders' equity   119,572 134,925    
TOTAL LIABILITIES AND EQUITY   $ 239,613 $ 241,918