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) - AMAK - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]    
Current assets $ 44,189 $ 45,354
Noncurrent assets 199,109 196,564
Total assets 243,298 241,918
Current liabilities 28,955 27,645
Long term liabilities 82,029 79,348
Stockholders' equity 132,314 134,925
Total liabilities and Shareholders' equity $ 243,298 $ 241,918