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INVESTMENT IN EQUITY SECURITIES (Tables) | 9 Months Ended
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Sep. 30, 2020
Equity Method Investments and Joint Ventures [Abstract] |
Schedule of investments in equity securities | Our investment in equity securities consisted of the following:​
​ | September 30, 2020 |  | December 31, 2019
Equity Method Investments: | ​ |  | ​
BTY | $ | 31,921 |  |  | $ | 119 |
Sonmol | 5,195 |  |  | — |
Kali Care | 3,611 |  |  | 3,881 |
Desotec GmbH | 904 |  |  | 858 |
​ |  |  |
Other Investments | 5,365 |  |  | 3,538 |
​ | $ | 46,995 |  |  | $ | 8,396 |

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