Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS (Details)

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INVESTMENTS (Details) - Investment in Telecon Convertible Bond [Member] - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Schedule Of Investments [Line Items]    
Balance, beginning of period $ 26,100 $ 27,866
Sales of convertible bond (2,919)  
Net loss on investment on convertible bond (126)  
Change in fair value included in the statement of other comprehensive income 466 (1,766)
Balance, end of period $ 23,521 $ 26,100