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INVESTMENT IN EQUITY SECURITIES - Schedule of Investments (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Total equity method investments and other investments | $ 65,200 | $ 50,087
BTY |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity method investments | 33,005 | 33,020
Sonmol |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity method investments | 5,710 | 5,598
Kali Care |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity method investments | 422 | 535
Desotec GmbH |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity method investments | 943 | 964
Purecycle |  |
Schedule of Equity Method Investments [Line Items] |  |
Other investments | 20,595 | 5,397
Loop |  |
Schedule of Equity Method Investments [Line Items] |  |
Other investments | 2,894 | 2,894
Others |  |
Schedule of Equity Method Investments [Line Items] |  |
Other investments | $ 1,631 | $ 1,679

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