Quarterly report pursuant to Section 13 or 15(d)

INVESTMENT IN AMAK AND DISCONTINUED OPERATIONS - Equity in the Income or Loss of Equity Method Investment (Details)

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INVESTMENT IN AMAK AND DISCONTINUED OPERATIONS - Equity in the Income or Loss of Equity Method Investment (Details) - AMAK - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Schedule of Equity Method Investments [Line Items]    
AMAK Net Loss $ 0 $ (2,611)
Company's share of loss reported by AMAK 0 (869)
Amortization of difference between Company's investment in AMAK and Company's share of net assets of AMAK 0 337
Equity in losses of AMAK $ 0 $ (532)